A Method to Identify Bird Constitutive Model and its Parameters

Abstract

Identification of a bird constitutive model and its parameters is a very difficult work in bird-impact coupling solution. In order to identify the constitutive model and the parameters simultaneously, an inversion analytic model for the bird material parameters is given based on penalty function method and nonlinear optimization principle, and then combining the model preferential criterion proposed in this paper, the identification system of the bird constitutive model is established with ANSYS Parametric Design Language (APDL). Finally, the feasibility and practicability of this identification method are verified by an example.

Numerical modelling of ice: Mechanical behaviour of ice under high strain rates

“…Instead, an inverse modelling approach can be used to numerically obtain the damage parameters. Similar inverse methods have been used for determining material models of brittle materials by Zhang et al [38]. As for the establishment of the finite element models for the inversion algorithm, experimental cases which are sensitive to the damage behaviours of ice samples should be selected.…”