PSEUDOELASTIC SMA SPRING ELEMENTS FOR PASSIVE VIBRATION ISOLATION, PART II: SIMULATIONS AND EXPERIMENTAL CORRELATIONS

In part II of this two-part study, system simulations and ex-perimental correlations of an SMA based vibration isolation de-vice (briefly described in part I) has been presented. This de-vice consists of layers of pre-constrained SMA tubes undergoing pseudoelastic transformations under transverse dynamical load-ing. In part II, detailed description of the prototype vibration iso-lation device, its experimental setup and actual experimental test results are presented. An extensive parametric study has been conducted on a non-linear hysteretic dynamical system, repre-senting this vibration isolation device utilizing a physically based simplified shape memory alloy (SMA) model and a Preisach model (an empirical model based on system identification) devel-oped in part I. Both the physically based simplified SMA model and the modified Preisach model have been utilized to perfor