摘要
本文概述用非线性有限元技术对直升机结构的坠毁过程进行数值模拟。所分析的结构包括飞行员座椅、座椅减震器、地板盒段和滑撬。问题被当作结构在规定初速度或脉冲载荷作用下的非线性(大变形与弹塑性)动反应。用特殊设计的单元模拟减震器及座椅滑轨,用间隙单元模拟结构与地面的撞击。
The pacer summarizes the numerical simulation of crash for helicopters using nonlinear finite element technique.The structures considered include the pilot seat, shock absorber, floor and skate.The problem is considered as dynamic response of the structure subjected to specified initial velocity or impulse load,with large deformation and plasticity.Special elements are designed to model the absorber and seat trail.Impact effects with ground are represented by gap elements.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1989年第2期B027-B035,共9页
Acta Aeronautica et Astronautica Sinica
