Structural Dynamics and Vibration in Practice

5

Damping

Contents

5.1 Viscous and hysteretic damping models

5.2 Damping as an energy loss

5.3 Tests on damping materials

5.4 Quantifying linear damping

5.5 Heat dissipated by damping

5.6 Non-linear damping

5.7 Equivalent linear dampers

5.8 Variation of damping and natural frequency in structures with amplitude and time

Damping was introduced in Chapter 1 as one of the ‘building blocks’ making up the systems we deal with in structural dynamics, and some of the ways in which it can be generated were discussed. The effects of linear, viscous, damping, on the response of a single-DOF system, were discussed in Chapters 2, 3 and 4. In this chapter, we also look at another form of linear damping, hysteretic damping, and compare it with viscous ...