爆炸与冲击2011，Vol.31Issue(1)：75-80,6.
爆炸载荷下板条边界斜裂纹的动态扩展行为
Dynamic propagation behaviors of an oblique edge crack in material under blast loading
摘要
Abstract
The propagation of explosion stress waves in strips containing an oblique edge crack was analyzed. And a series of caustic experiments were conducted to explore the crack extension under blast loading. Investigated results show that the crack growth velocity, acceleration and dynamic stress intensity factors fluctuate during the propagation of the oblique edge crack under explosion stress waves. The maximum values of the crack growth velocity, acceleration and dynamic stress intensity factor KdI at the crack tip are 222 m/s, 11.01 MN/s2 and 0.735 MN/m3／2, respectively. The tensile field at the tip of the oblique edge crack is a main factor to induce crack initiation and propagation.关键词
固体力学/裂纹扩展/动态焦散线/边界斜裂纹/爆炸应力波Key words
solid mechanics/ crack propagation/ dynamic caustics/ oblique edge crack/ explosion stress wave分类
数理科学引用本文复制引用
岳中文,杨仁树,董聚才,韩朋飞..爆炸载荷下板条边界斜裂纹的动态扩展行为[J].爆炸与冲击,2011,31(1):75-80,6.基金项目
国家自然科学基金项目(50774086) （50774086）
