Damping response analysis for a structure connected with a nonlinear complex spring and application for a finger protected by absorbers under impact forces
We analyze impact responses of a pair of viscoelastic shock absorbers with and without a human finger. We propose a new numerical method using complex nonlinear concentrated springs with FEM. We introduce complex values for the nonlinear spring constants to represent nonlinear hysteresis. To reduce DOF, we introduce normal coordinates corresponding to linear vibration modes.
fem simulation modeling nonlinear vibration viscoelastic material