航空学报 > 1989, Vol. 10 Issue (2): 27-35

直升机坠毁响应的有限元模拟

王寿梅1, 董小峰2, 彭勉2   

  1. 1. 北京航空航天大学;
  • 收稿日期:1997-10-27 修回日期:1900-01-01 出版日期:1989-02-25 发布日期:1989-02-25

F.E. SIMULATION OF CRASH FOR HELICOPTERS

Wang Shoumei Dong Xiaofeng1, Pong Mian2   

  1. 1. Beijing University of Aeronautics and Astronautics;2. Helicopter Design and Development Center of China
  • Received:1997-10-27 Revised:1900-01-01 Online:1989-02-25 Published:1989-02-25

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。

关键词: 抗坠毀, 有限元, 非线性

Abstract:

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.

Key words: crash worthiness .finite element, nonlinenr