为进一步研究大型覆盖件冲压成形质量分析的技术，采用混合网格法进行变形区域塑性主应变分布测量。
A hybrid grid method was used to determine the principal plastic strain distribution in a deformed area of a sheet metal piece.
传统的自动网格法常采用均匀布点法，这对应变集中区域的变形测量极为不利。节点过多，检测精度会下降；
Traditional automated grid method often adopts uniform grid method , which is unfavorable for the displacement measurement in stress concentration field.
传统的自动网格法常采用均匀布点法，这对应变集中区域的变形测量极为不利。节点过多，检测精度会下降；
Traditional automated grid method often adopts uniform grid method , which is unfavorable for the displacement measurement in stress concentration field.
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