三维应力集中效应的实验研究

An Experimental Study on Three Dimensional Stress Concentration Effect

平面应力状态的概念广泛应用于应力集中系数的计算和工程设计中,本文所提供的实验数据表明在板中的槽和缺口处都是三维应力状态,实验数据是通过电测法和等力线法测定的。文中引用了三维应力集中系数的概念,并研究了槽深对三维应力集中的影响。

The concept of a generalized plane stress state is widely accepted in analysis of stress concentration and engineering design. Experimental measurements obtained with resistance strain gages and isodyne techniques confirm that regions of notches and cracks in a plate are all in the threedimensional stress states. The concept of Three - Dimensional Stress Concentration Factor of plate is introduced. The affect of depth of notches on three-dimensonal stress concentration is descussed.