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提出一种通过测定板料变形前后晶粒外形轮廓尺寸来计算板料局部应变的方法 ,将这种显微应变分析法对经单向拉伸后的侧面带圆弧缺口的板料的 4个位置的应变量的测定结果 ,与网格分析法的结果进行了比较 ,分析了显微应变分析法的精度及其影响因素
A method for calculating the local strain of sheet metal by measuring the contour of the grain before and after the sheet deformation is proposed. The method of this micromechanical strain analysis is applied to the analysis of four uncoated sheets Position of the strain measured results, and grid analysis of the results were compared, analysis of the accuracy of the micro-strain analysis and its influencing factors