浅球形双凹坑或多凹坑对应力集中的增强效应

Stress Concentration in a Slab Caused by Two or More Shallow Spherical Hollows

板表面的浅球形四坑是一种具有代表性的缺陷。本文以光弹性研究成果为基础，结合有限元结果，进一步分析双凹坑或多回坑对应力集中的增强效应，并确定双凹坑的最不利间距及其对应力集中的影响程度。

Hollows on the surface is one of the common defects of a slab.In this paper, the effect on stress concentration due to the presence of two or more hollows is analysed by means of Photoelastic and finite element method. The most unfavorable distance between two hollows and its influence on stress concentration are determined.