爆破模型动光弹和全息干涉研究中的两个基本问题

Foundational Problems in Two Kinds of Blasting Model by Dynamic Photoelasticity and Hologram Interferometry

摘要: 在一次爆破加载中同时获得了等差条纹图和等和条纹图,利用2种方法进行无限平面集中爆破载荷的动应力场求解研究,对不同方法的计算结果进行了对比分析并指出了各自的适用范围.为解决复杂条纹图的判读问题,还设计了一种应力波边界反射后条纹判据的检验方法.

Abstract: The transient is opachic and isochromtic tringe patterns are acquired at a blast loading.Two kinds of ways are used to study transient stress field in infinite plate subjected to concentrated blasting load,the different calculation results are contrasted.A new verifying method for judging the orders of two kinds of fringes is devised if stress wave is reflected at the free boundary.