爆破模型動光彈和全息干涉研究中的兩個基本問題

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

摘要: 在一次爆破加載中同時獲得了等差條紋圖和等和條紋圖,利用2種方法進行無限平面集中爆破載荷的動應力場求解研究,對不同方法的計算結果進行了對比分析并指出了各自的適用范圍.為解決復雜條紋圖的判讀問題,還設計了一種應力波邊界反射后條紋判據的檢驗方法.

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.