对50W800G硅钢板采用十字形试样进行了不同加载条件下的单向拉伸试验和双向拉伸试验,并运用ANSYS软件对试验结果进行了有限元模拟.结果表明:50W800G硅钢板双向等比拉伸时的应力-应变曲线位于双向非等比拉伸和单向拉伸时的应力-应变曲线之上;50W800G硅钢没有明显的各向异性行为,双向等比拉伸时轧制方向的应力-应变曲线稍高于垂直于轧制方向的,而双向非等比拉伸时垂直于轧制方向的应力-应变曲线稍高于轧制方向的;ANSYS有限元数值模拟的结果可用来预测双向拉伸过程中的应力-应变关系.

On the basis of optimized cruciform specimen,simple tension and biaxial tension tests of 50W800G silicon steel sheet were performed under different loading conditions and the test results were simulated with ANSYS finte element soft.The results show that the stress-strain curve of biaxial tension with equal ratios was above that of simple tension and biaxial tension with unequal ratios.The anisotropy of 50W800G silicon steel was not obvious.The stress-strain curve in the rolling direction was slightly higher than that in the vertical direction under the condition of biaxial tension with equal ratios which was oppisite to that of with unequal ratios.The simulated results of ANSYS could beused to forecast the relation of σ-ε during the biaxial tension course.