Imeko Technical Committee 15

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Imeko Technical Committee 15 2nd Youth Symposium on Experimental Solid Mechanics May, 7-10 2003 Milano Marittima (Ravenna), Italy EXPERIMENTAL MESUREMENTS OF THE DYNAMIC PROPERTIES OF VISCOELASTIC MATERIALS AND SYSTEMS Andrea Magalini, David Vetturi Dipartimento di Ingegneria Meccanica Università degli Studi di Brescia

2nd Youth Symposium on Experimental Solid Mechanics Introduction Dynamic characterization of rubber-to-metal devices for automotive applications Research partnership University of Brescia Mechanical Engineering Department CF Gomma Group 2nd Youth Symposium on Experimental Solid Mechanics

Rubber-to-metal devices Automotive applications: Vibrations-damping devices Vibrations-damping device for Mc-Pherson suspensions Engine mountings Adaptive journal boxes 2nd Youth Symposium on Experimental Solid Mechanics

2nd Youth Symposium on Experimental Solid Mechanics Engine mountings Adaptive journal boxes 2nd Youth Symposium on Experimental Solid Mechanics

2nd Youth Symposium on Experimental Solid Mechanics Materials Dynamic properties of elastomers Visco-elasticity Hysteresis Self-heating Non - linearity (stress-deformation curves) 2nd Youth Symposium on Experimental Solid Mechanics

2nd Youth Symposium on Experimental Solid Mechanics Frequency effects Temperature effects Stress Strain Temperature 2nd Youth Symposium on Experimental Solid Mechanics

Experimental analysis Fixtures Electro-dynamic shaker Material properties: E* and G* Suspended mass Test specimen Standard test-pieces Device global stiffness: K* Vibrating board Shaker Sweep of sine waves at constant deformation levels Rubber-to-metal devices 2nd Youth Symposium on Experimental Solid Mechanics

2nd Youth Symposium on Experimental Solid Mechanics Measurement chain Shaker PC & Controller Power Amplifier ADC Acceleration measurement Temperature Drive signal Power drive Data Test Design DAC 2nd Youth Symposium on Experimental Solid Mechanics

2nd Youth Symposium on Experimental Solid Mechanics Output Accelerations System Frequency response Stiffness 2nd Youth Symposium on Experimental Solid Mechanics

2nd Youth Symposium on Experimental Solid Mechanics

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