RESISTENCIA DE MATERIALES. MÓDULO AVANZADO Ref: 0742 ITEM 1 / 4 REFERENCIA DESCRIPCIÓN CANT. 1 MVV EQUIPO DIDACTICO DE VIGAS. 1 2 MVVC DISPOSITIVO PARA USAR CON MVV 1 3 MVV/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DIDACTICO DE VIGAS. 1 4 MVV/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DIDACTICO DE VIGAS (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 5 MUP EQUIPO UNIVERSAL PANDEO 1 6 MUP/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO UNIVERSAL PANDEO 1 7 MUP/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO UNIVERSAL DE PANDEO (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 8 MTP EQUIPO DE TORSION Y PANDEO 1 9 MTP/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE TORSION Y PANDEO 1 10 MTP/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE TORSION Y PANDEO (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 11 MFV EQUIPO DE FLECHA EN VIGAS 1 12 MFV/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE FLECHA EN VIGAS 1 13 MFV/CAL SOFWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE FLECHA EN VIGAS (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 14 MTB EQUIPO DIDACTICO TORSION 1 15 MTB/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DIDACTICO TORSION 1 16 MTB/CAL SOFWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DIDACTICO TORSION (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 17 MFLT EQUIPO 1 18 MFLT/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO FLEXION Y TORSION 1 19 MFLT/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO FLEXION Y TORSION (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 20 MVS EQUIPO DE VIGA SUSPENDIDA 1 21 MVS/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE VIGA SUSPENDIDA 1 22 MVS/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE VIGA SUSPENDIDA. (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 23 MFL EQUIPO DE FLEXION 1 FLEXION Y TORSION Ref: 0742 ITEM 2 / 4 REFERENCIA DESCRIPCIÓN CANT. 24 MFL/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE FLEXION 1 25 MFL/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE FLEXION (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 26 MPO PORTICO 1 27 MPO/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE PORTICO 1 28 MPO/CAL SOFWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA PORTICO (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 29 MDB EQUIPO DEFLEXION BARRAS 1 30 MDB/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DEFLEXION BARRAS 1 31 MDB/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE DEFLEXION EN BARRAS CURVAS (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 32 MMF EQUIPO DE MOMENTO FLECTOR 1 33 MMF/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE MOMENTO FLECTOR 1 34 MMF/CAL SOFWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE MOMENTO FLECTOR (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 35 MVL EQUIPO DE VIBRACIONES LIBRES 1 36 MVL/SOF * SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE VIBRACIONES LIBRES 1 37 MVL/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE VIBRACIONES LIBRES (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 38 MVLF EQUIPO DE VIBRACIONES LIBRES Y FORZADOS 1 39 MVLF/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE VIBRACIONES LIBRES Y FORZADOS 1 40 MVLF/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE VIBRACIONES LIBRES Y FORZADOS (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 41 MOT EQUIPO DE OSCILACIÓN TORSIONAL 1 42 MOT/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE MOTOR ASINCRONO TRIFASICO 1 43 MOT/CAL SOFWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA MOTOR ASINCRONO TRIFASICO (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 44 MAE EQUIPO DE ACELERACIÓN EN SISTEMAS DE ENGRANAJE, SIN MASAS (1 DE SET B) 1 45 MAE/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR DE EQUIPO DE ACELERACIÓN EN SISTEMAS DE ENGRANAJE 1 Ref: 0742 ITEM 3 / 4 REFERENCIA DESCRIPCIÓN CANT. 46 MAE/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE ACELERACIÓN EN SISTEMAS DE ENGRANAJE (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 47 MES EQUIPO DE EQUILIBRIO SIMPLE 1 48 MES/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR (PC) DE EQUIPO DE EQUILIBRIO SIMPLE 1 49 MES/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE EQUILIBRIO SIMPLE (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 50 MBU BASTIDOR UNIVERSAL 1 51 MBU/SOF* SOFTWARE DE ENSEÑANZA ASISTIDO DESDE COMPUTADOR DE BASTIDOR UNIVERSAL 1 52 MBU/CAL SOFWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA BASTIDOR UNIVERSAL (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 53 MCD EQUIPO DE CILINDRO DELGADO 1 54 MCD/SOF* SOFTWARE DE ENSEÑANZA ASISTIDA DESDE COMPUTADOR (PC) DE EQUIPO DE CILINDRO DELGADO 1 55 MCD/CAL SOFTWARE DE APRENDIZAJE ASISTIDO DESDE COMPUTADOR PARA EQUIPO DE CILINDRO DELGADO (CÁLCULO Y ANÁLISIS DE RESULTADOS) 1 56 SET B CONJUNTO DE MASAS 2 57 INS/SOF PAQUETE DE SOFTWARE DE ADMINISTRACIÓN DE LA CLASE (SOFTWARE DEL PROFESOR) 1 58 0742PARTS COMPONENTES Y REPUESTOS 1 59 0742PA PARTIDA ALZADA 1 60 0742IYPM INSTALACIÓN Y PUESTA EN MARCHA 1 61 0742CAPRO CAPACITACIÓN Y ACTUALIZACIÓN DE PROFESORES 1 62 0742TD TÉCNICAS DIDÁCTICAS "KNOW-HOW" 1 63 0742MANU DOCUMENTACIÓN Y MANUALES 1 Ref: 0742 ITEM 4 / 4 REFERENCIA DESCRIPCIÓN Notas: a)Opción de multipuesto: * Este módulo tiene una unidad solamente en cada item, nosotros podemos recomendar el número de unidades para que 10 o 30 estudiantes puedan trabajar simultáneamente. b)Condiciones de suministro: * Condiciones técnicas: - Adaptación de los laboratorios. - Instalación de todos los equipos. - Puesta en marcha de todos los equipos. - Entrenamiento de cada uno de los ejercicios a ser realizados con cada uno de los equipos. - Formación de profesores, relacionada con cada equipo didáctico y cada una de las técnicas de enseñanza aplicada. - Transferencia de tecnología. * Condiciones comerciales: - Embalaje. - Gastos de financiación. - Gastos C.I.F. * Otras condiciones: - 8 Manuales para cada uno de los equipos didácticos de EDIBON: . Manual de servicios requeridos. . Manual de montaje e instalación. . Manual de la interface y del software/consola de control. . Manual de puesta en marcha. . Manual de normas de seguridad. . Manual de prácticas. . Manual de mantenimiento. . Manual de calibración. Ver catálogos en las páginas siguientes CANT. 7.- Mechanics & Materials 7.5- Strength of Materials 7.5.1- General Strength of Materials MVV. Unsymmetrical Cantilever Unit SPECIFICATIONS SUMMARY PRACTICAL POSSIBILITIES This unit is intended to demonstrate the unsymmetrical bending of beams. Simple experiments may be carried out to determine the deflections Duand Dv at the free end of cantilevers of various sections for varying angles of applied load from which the relationship between Du and Dv, may be w w determined graphically. The unit consists os a vertical cantilever rigidly clamped at its lower end to the main column which is attached to a rigid base. Beams of varying sections may be used. A loading head, located at the upper end of the column, can rotate freely about the vertical axis of the beam and a locating pin enables the head to be locked at 15º intervals through 180º. A horizontal load may be applied to the free end of the beam by means of a cord attached to the beam and passing over a pulley mounted on the rotating head. The Du and Dv deflections of the beam are measured by means of two dial gauges mounted at 90º to each other on the head. To compensate for any lateral deflection of the beam, the line of action of he applied load can be adjustable by lateral adjustment of the load pulley. Dimensions (approx.): 300 x 300 x 400 mm. Weight: 15Kg. _ _ 1.- To demonstrate the unsymmetrical bending of beams. 2.- The Au and Av deflections of the beam are measured by means of two dial gauges mounted at 90º to each other on the head. 3.- Beams of varying section may be used. 4.- Study of rigidity variations. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MVV.pdf MUP. Loading of Struts Unit SPECIFICATIONS SUMMARY The unit has been developed to enable students to carry out a series of tests to determine the crippling load for struts of varying slenderness ratios and end fixing conditions. The unit has been designed to accommodates struts os suitable lengths within the range 400/800 mm. The struts are rectangular in sections, thus ensuring that the deflection occurs in a predetermined plane. Reversible hardened load blocks are provided so that the struts can be tested under the following conditions: 1.- Both ends pinned. 2.- Both ends fixed. 3.- One end pinned, one end fixed. The load is applied to the strut by means of a spring balance and a loading beam. The beam pivots on a nut which can be adjusted vertically so that the beam can be maintained in the horizontal position during loading thus ensuring that a true axial load can be supplied throughout the test. A light lateral load is applied to the strut to ensure the direction of deflection, the magnitude of which can then be measured by means of a dial indicator. One st of struts for each end condition is supplied with the unit. Dimensions (approx.): 900 x 600 x 1250 mm. Weight: 55Kg. PRACTICAL POSSIBILITIES Some practical possibilities: 1.- To carry out a series of tests to determine the crippling load for struts of varying slenderness ratios and end fixing conditions. 2.- A light lateral load is applied to the strut to ensure the direction of deflection, the magnitude of which can then be measured by means of a dial indicator. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MUP.pdf MTP. Twist and Bend Machine SPECIFICATIONS SUMMARY Combined twist and bend testing machine for use both in pupil’s laboratory exercises and in conjunction with theoretical work on twist and bending. In twist test you can determine and compare the modulus of rigidity for different materials and demonstrate the deformation formula. In bending test you determine the modulus of elasticity of different materials and demonstrate, for example, the relation between load, moment of inertia, distance between supports, modulus of elasticity and deflection. The test pieces for bending tests are of different dimensions, so that you can determine the relation between moment of inertia and dimensions os a material. The unit includes: Twist and Bend machine. Two loading devices. Two 1N masses. Two 0.5 N masses. Test pieces of rectangular cross section. Test pieces 8mm dia. In steel, aluminium brass and wood. Dimensions (approx.): 800 x 230 x 350 mm. Weight: 15Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MTP.pdf MFV. Beam Deflection Unit PRACTICAL POSSIBILITIES 1.- Investigation of the relationship between load, span, width, height and deflection of a beam. 2.- To ascertain the co-efficient of elasticity for steel, brass aluminium and wood. 3.- Investigation of the relationship between torsional moment, clamping length and torsional angle of a shaft. 4.- To determine the shear modulus of steel, brass and aluminium. PRACTICAL POSSIBILITIES SPECIFICATIONS SUMMARY The MFV Beam Deflection Unit has been designed to enable students to carry out experiments on simply supported and cantilever beams in order to investigate the relationship between the deflections and the applied loads and the effects of variations in length and cross sectional dimensions on the beam deflection. The unit consists of a rigid main support beam on which the hardened knife Edge and Cantilever supports for the test beams can be easily positioned. Hardened steel Knife edge load hangers and the dial gauge support, which slides freely on the main support beam , can be readily moved to selected point where the deflection is to be measured. A suitably marked scale is secured to the main support beam so that the test beam supports, the load hangers and the dial gauge may be quickly and accurately located. The unit includes three test beams of the same material having suitable cross sectional dimensions. Dimensions (approx.): 400 x 400 x 1200 mm. Weight: 25Kg. Some practical possibilities: 1.- Experiments on simply supported and cantilever beam. 2.- To investigate the relationship between the deflections and the applied loads. 3.- Study of the effect of variations in length and cross section dimensions on the beam deflection. 4.- Deflection measurement. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MFV.pdf MTB. Torsion Unit SPECIFICATIONS SUMMARY This unit has been designed for student laboratory exercises to investigate the elastic torsion characteristics of circular bars. A range of specimens in different materials is supplied as standard. Dimensions (approx.): 522x 260 x 496 mm. Weight: 9.5Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MTB.pdf Page 16 PRACTICAL POSSIBILITIES 1. To investigate the elastic torsion characteristics of circular bars. 2.- The verification of the elastic torsion equation. 3.- The determination of the modulus of rigidity for different materials. 4.- Torque is applied to the specimen bars by means of a spring balance and torque arm and a dial gauge in contact with the arm enables the angle of twist to be measured. 7.5.1- (continuation) General Strength of Materials MFLT. Strut Unit (continuation) SPECIFICATIONS SUMMARY This unit enables the student to determine experimentally the buckling load for struts of varying slenderness ratios and end fixing conditions. Varying lengths of struts can be subjected to direct axial loading and the critical load determined accurately. Struts with rigidly fixed or pin-jointed end conditions may be tested and the effect to these end conditions on the buckling load is demonstrated. The load is applied by means of a differential screw to provide sensitive adjustment. A load cell and dial gauge are used to measure and indicate the load being applied to the strut. A range of specimens is supplied. Dimensions (approx.): 900 x 200 x 200mm. Weight: 10Kg. PRACTICAL POSSIBILITIES 1.- To determine experimentally the bucking load for struts of varying slenderness ratios and end fixing conditions. 2.- Varying lengths of struts can be subjected to direct axial loading and the critical load determined. 3.- Struts with rigidly fixed or pin-jointed end conditions may be tested and the effect of these end conditions on the buckling load is demonstrated. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MFLT.pdf MVS. Suspension Bridge Unit SPECIFICATIONS SUMMARY This unit is intended to represent a simple application of a suspended beam and may be used to determine experimentally the tension in the cables supporting a beam carrying a series of distributed loads. A light alloy beam is supported on the rods attached at pivot points to cross members threaded on the supporting cables which pass over ball bearing pulleys. Tension in the supporting cables is determined by attaching suitable masses to the cable stirrups. Loads may be applied to the beam by attaching masses at a series loading points and indicators enable the beam to be returned toa position for the “true shape” of the supporting cables. Dimensions (approx.): 850 x 250 x 450 mm. Weight: 10Kg. PRACTICAL POSSIBILITIES 1.- To determine the tension in the cables supporting a beam carrying a set of distributed loads. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MVS.pdf MFL. Two Pinned Arch Unit SPECIFICATIONS SUMMARY PRACTICAL POSSIBILITIES The unit enables the student to determine the horizontal component of the abutment thrust os a simple two hinged arch beam. The beam is supported on ball bearing rollers attached to each end of the beam and the horizontal movement of the free end is indicated by a dial gauge so that the beam can be returned to it’s original unloaded span. The horizontal thrust force is applied to the free end of the beam by means of masses attached to a cord passing over ball bearing pulleys. Varying loads may be applied to the beam by means of a load hangers and masses and a dial gauge is provided to enable the vertical displacement to be measured. Dimensions (approx.): 750 x 200 x 550 mm. Weight: 10Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MFL.pdf MPO. Portal Frame Unit SPECIFICATIONS SUMMARY Unit designed for use in conjunction with theoretical studies in the deflections of a simple rectangular portal frame subject to varying applied loads. The specimen portal frame is attached to a rigid base by simple clamps and loads can be applied by mass hangers and a suitable range of masses. The horizontal and vertical deflections of the frame can be conveniently measured by means of dial gauges. Dimensions (approx.): 700 x 200x 500 mm. Weight: 10Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MPO.pdf PRACTICAL POSSIBILITIES 1.- Studies in the deflection of a simple rectangular portal frame subject to varying applied loads. 2.- It determines the deflection of the frame when subject to horizontal loading. 3.- It determines the deflection of the frame when subject to vertical loading. 4.- Horizontal and vertical deflections of the frame can be measured. MDB. Deflection of Curved Bars Unit SPECIFICATIONS SUMMARY Unit designed to enable the student to determine experimentally the horizontal and vertical displacements at the free and various thin curved bars when subject to single concentrated loads. The specimen bars are attached to a rigid base by means of a single clamp block which can be secured in predetermined positions to suit the specimen. A special load hanger, supported on a knife attached to the free end of the beams, allows the horizontal and vertical displacements to be measured by means of dial gauges. Dimensions (approx.): 330 x 230x 350 mm. Weight: 10Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MDB.pdf Page 17 PRACTICAL POSSIBILITIES Some practical possibilities: 1.- Study of the defection of curved bars. 2.- To determine the horizontal and vertical displacements at the free end of various thin curved bars when subject to single concentrated loads. 3.- A special load hanger, supported on a knife attached to the free end of the beams, allows the horizontal and vertical displacements to be measured by means of dial gauges. www.edibon.com 7.- Mechanics & Materials 7.510 Strength of Materials 7.- Mechanics & Materials 7.5- Strength of Materials 7.5.1- General Strength of Materials (continuation) (continuation) MMF. Shear Force and Bending Momentum Unit SPECIFICATIONS SUMMARY This Unit may be used to show that in a beam subject to transverse loads, at any section of the beam: - the shear force is the algebraic sum of the transverse components of the forces to one side of the section. - the bending moment is the algebraic sum of the moments of the forces to one side of the section. The beam is hinged at a typical transverse section and loads may be applied at varying positions on the beam. For the purposes of obtaining equilibrium, balancing forces are applied at the hinged point by suitable masses attached to cords passing over ball bearing pulleys. Dimensions (approx.): 340 x 200 x 350 mm. Weight: 8Kg. PRACTICAL POSSIBILITIES Some practical possibilities: 1.- To show that in a beam subject to transverse loads, at any section of the beam. 2.- It shows the shearing force is the algebraic sum of the transverse components of the forces to one side of the section. 3.- It shows the bending moment is the algebraic sum of the moments of the forces to one side of the section. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MMF.pdf MVL. Free Vibration Unit SPECIFICATIONS SUMMARY Demonstrations may be carried out to illustrate free and damped vibrations of a simple spring-mass system having one degree of freedom and the response of a second order mechanical system to a step input. Experiments can be carried out by students to investigate the relationship between the mass of the body, the stiffness of the spring, the periodic time or frequency of oscillation and to observe the effect of viscous damping on the system. Springs of various stiffness a suitable masses are supplied. The dashpot is adjustable to provide a wide range of damping. A pen attached to the vibrating frame and a paper strip driven by a synchronous motor provide the means of producing amplitude/time recordings. Dimensions (approx.): 600 x 350x 1000 mm. Weight: 30Kg. PRACTICAL POSSIBILITIES Some practical possibilities: 1.- To illustrate free and damped vibrations of a simple spring-mass system having one degree of freedom and the response of a second order mechanical system to a step input. 2.- To investigate the relationship between the mass of the body, the stiffness of the spring, the periodic time or frequency of oscillation and to observe the effect of viscous damping on the system. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MVL.pdf MVLF. Free & Forced Vibration Unit SPECIFICATIONS SUMMARY Free and Forced Vibration Unit (MVLF) has been developed to extend the range of demonstration and experiments which may be carried out to include the free and forced vibrations of a single degree of freedom with viscous damping. Simple adjustment can be made to the unit and the motion of the mass can be readily observed and recorded on the two pen recorders provided. Adopting the well tried features of the simple vibration unit, the mass carriage is constrained by rollers on vertical guide ways to provide minimum uncontrolled damping. Variable viscous damping is provided by an oil dashpot. Two methods of exciting forced vibration are adopted; by oscillating the upper spring mounting with SHM at variable frequency or by applying a rotating out balance force at variable frequency to the vibrating mass. Dimensions (approx.): 900 x 600x 1250 mm. Weight: 80Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MVLF.pdf PRACTICAL POSSIBILITIES Besides the practical possibilities of "MVL” unit, this unit has the following: 1.- To investigate the relationship between the mass of the body, the stiffness of the spring and the periodic time or frequency of the oscillation of a simple springspring-mass system having one degree of freedom. 2.- To investigate the effect of viscous damping on the free vibration of simple spring-mass-damper system. 3.- To determine the damping ratio or factor for a given spring-massdamper system. 4.- To investigate the relationship between the amplitude of the steady state vibration of the vibrating mass and the forcing frequency for varying damping ratios. MOT. Torsional Oscillations Unit SPECIFICATIONS SUMMARY This unit may be used to illustrate and investigate the torsional oscillations of single rotor, multi-rotor and geared systems. It consist basically of a rigid frame carrying bearing cells, helical springs to simulate long flexible shafts and discs of varying mass moment of inertias. Suitable gears of various sizes are also provided. The natural frequencies are of a low order and may be counted, a line drawn axially on the spring serves to illustrate the elastic line and facilitates the experimental location of the nodes. Dimensions (approx.): 790 x 380 x 380 mm. Weight: 30Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MOT.pdf Page 18 PRACTICAL POSSIBILITIES Some practical possibilities: 1.- To illustrate and investigate the torsional oscillation of single rotor, multi-rotor and geared systems. 2.- The natural frequencies are of a low order and may be counted, a line drawn axially on the spring serves to illustrate the elastic line and facilitates the experimental location of the nodes. 7.5.1- (continuation) General Strength of Materials (continuation) MAE. Acceleration of Geared Systems Unit SPECIFICATIONS SUMMARY This unit consists essentially of three shafts, each mounted on ball races, supported in a suitable frame and connected by gearing. Provision is made to change the gear ratios and gears of suitable sizes are provided. A flywheel is attached to one of the shafts, whilst discs having varying mass moments of inertia may be attached to the other two shafts. A torque drum is secured to each shaft and suitable masses, attached to a cord wound on to one of the drums, provide a means of applying a torque to the system. By allowing the mass attached to the drum to fall a predetermined distance and measuring the time taken, the acceleration of the system can be calculated. PRACTICAL POSSIBILITIES Some practical possibilities: 1.- Determining the moment of inertia of a single shaft and attached to the other two shafts. 2.- To calculate the acceleration. 3.- A torque drum is secured to each shafts and suitable masses, attached to a cord wound on to one of the drums, provide a means of applying a torque to the system. Dimensions (approx.): 650 x 350 x 300 mm. Weight: 25Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MAE.pdf MES. Simple Balancing Unit SPECIFICATIONS SUMMARY It is intended for use in either the classroom or laboratory for demonstrations and experiments in the balancing of co-planar rotating systems. The rotating system is basically a shaft mounted on a bearings, supported in a rigid frame and driven by a small electric motor attached to the frame. A disc to which masses may be attached is rigidly secured to the shaft. The disc is suitable drilled and the holes are positioned so that various conditions of unbalance in a co-planar rotating system can be simulated and the normal methods used to determine the magnitude and position of the counter balance mass verified. The unit is supported on springs attached to the main frame so that the oscillation set up by any unbalanced forced may be observed. Dimensions (approx.): 470 x 600 x 450 mm. Weight: 22Kg. PRACTICAL POSSIBILITIES 1.- Demonstrations and experiments in the balancing of co-planar rotating systems. 2.- To determine the magnitude and position of the counter balance mass verified. 3.- Various conditions of unbalance in a co-planar rotating system can be simulated and the normal methods used. 4.- Oscillation set up by any unbalanced force may be observed. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MES.pdf MBU. Universal Bench Mounted Frame SPECIFICATIONS SUMMARY PRACTICAL POSSIBILITIES The frame is designed to accommodate two units, allowing adequate space for students to work on each piece of equipment simultaneously. However it is possible to mount three pieces, in the case of the simple transmission system. Dimensions (approx.): 700 x 1200 x 50 mm. Weight: 30Kg. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MBU.pdf MCD. Thin Cylinder Unit SPECIFICATIONS SUMMARY Thin Cylinder Unit permits the investigation of stresses and strains in a thin cylinder under internal pressure. The thin walled alloy cylinder, supported by a cradle is mounted on a base board together with the hydraulic hand pump for pressuring the system. Two stress conditions are available: - Open ends - circumferential stress. - Closed ends - bi-axial stress. The cradle is designed to quickly allow the selection of either condition. Six strain gauges are fitted to the cylinder to allow the measurement of surface strains at various angles. A pressure gauge indicates the cylinder pressure. PRACTICAL POSSIBILITIES Some practical possibilities: 1.- Investigation of stresses and strains in a thin cylinder under internal pressure. 2.- Two stress conditions are available: -Open ends -circumferential stress. -Closed ends -bi-axial stress. 3.- Measurement of surface strains at various angles. 4.- May be observed the cylinder pressure. More information in: www.edibon.com/products/catalogues/en/ units/mechanicsmaterials/strengthmaterials/MCD.pdf Page 19 www.edibon.com 7.- Mechanics & Materials 7.510 Strength of Materials