Coupled Shell-Material Point Method for Bird Strike Simulation

• 来源期刊: 固体力学学报（英文版）
• 年，卷（期）: 2018,（1）
• 页码范围: 1-18
• 页数: 18页
• 语种: 英文

摘要

In a bird strike,the bird undergoes large deformation like flows;while most part of the structure is in small deformation,the region near the impact point may experience large deformations,even fail.This paper develops a coupled shell-material point method (CSMPM) for bird strike simulation,in which the bird is modeled by the material point method (MPM) and the aircraft structure is modeled by the Belytschko-Lin Tsay shell element.The interaction between the bird and the structure is handled by a particle-to-surface contact algorithm.The distorted and failed shell elements will be eroded if a certain criterion is reached.The proposed CSMPM takes full advantages of both the finite element method and the MPM for bird strike simulation and is validated by several numerical examples.