A spectral dissipative constitutive law of soft tissues for modeling the dynamic response of a preloaded phalanx.

Extensive exposure of the hand-arm system to regular vibration can lead to various disorders and injuries due partly to changes of mechanical quantities like dynamic stress or strain arising from the propagation of such vibration. Our work aims at establishing and verifying a reliable high fidelity 3D finite element model to simulate mechanical and thermal effects generated by vibration transmitted to a statically preloaded distal forefinger phalanx. Our goal is to identify the most suitable hyper-elastic and damping behaviour laws and their related parameters which best fit the mean static and dynamic finger stiffness measured on a group of subjects.