Analytical Finite Element Simulation Model for Structural Crashworthiness Prediction.

摘要

Incremental equations governing the nonlinear elasto-plastic dyanmic response of three-dimensional frame structures are derived,where the associated stiffness and compatibility matrices also incorporate large geometry changes. A discussion of yield criteria is given,together with bound type estimates for thin walled cross section beams. The Newmark beta method is then used to solve the equations of motion,and is oriented toward the particular incremental equations typical of the present application.