【摘要】 在实验应力应变分析中,焦散线方法是研究奇异应力场的有效方法.本文以半无限平面受边界压缩载荷作用的问题为例,对集中力作用下的焦散线与分布力作用下的焦散线作了比较,分析了由分布载荷得到的焦散线而计算得到的载荷与施加到试件上的实际载荷之间的误差,并提出了减小误差的措施.更多还原

【Abstract】 The shadow optical method of caustics is an effective experimental technique in stressstrain analysis, especially for stress concentration problems. This paper examined a semiinfinite plane loaded by a distributed force along the boundary. The caustics patterns produced by the distributed loads along the boundary are compared with the one of concentrated loads, and the error between them is discussed. Some methods for reducing the error is suggested.更多还原