Question: The experimentally observed force-deflection curve for a composite structure is shown in Fig. 2.124. Find the hysteresis damping constant, the logarithmic decrement, and the equivalent

The experimentally observed force-deflection curve for a composite structure is shown in Fig. 2.124. Find the hysteresis damping constant, the logarithmic decrement, and the equivalent viscous-damping ratio corresponding to this curve.

Force (N) 900 800 700 600 500 400 300 200 100 0

Force (N) 900 800 700 600 500 400 300 200 100 0 -100 -200 -300 -400 -500 -600 -700 -800 -900 -8 -6 -4 -2 0 2 46 Deflection (mm) FIGURE 2.124 Force-deflection curve. 8

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