正交异性球壳在冲击载荷下的弹性波传播

基金项目: 国家自然科学基金

ELASTIC WAVE PROPAGATION OF ORTHOTROPIC SPHERICAL SHELL SUBJECTED TO A SHOCK LOAD

摘要

摘要: 本文以位移和转角为独立变量导出了正交各向异性弹性薄球壳的运动方程组。该方程组反映了横向剪切变形和转动惯性效应的影响。在此基础上用有限差分法计算了球壳在冲击载荷作用下的响应,与摩托车头盔受冲击试验结果吻合较好。本文的计算方法对于受冲击载荷的复合材料壳体设计具有工程应用价值。
- 壳体 /
- 弹性波 /
- 冲击载荷 /
- 有限差分
Abstract: In this paper,the general equations of motion for displacements of thin elastic orthotropic spherical shell are derived.These equations also contain the influences of rotatory inertia.On this basis, the response of spherical shell subiected to a shock load is calculated by using finite difference method.Finally, this result is compared with the test of helmets of motrobicycle subjected to a shock load.
- elastic wave /
- shell /
- shock load /
- finite difference method