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DP1000高强冷轧双相钢已开始广泛用于汽车等工业领域。建立了DP1000高强钢冲压试验的简化有限元模型,利用材料拉伸试验得到的工程应力应变曲线求出DP1000钢的真应力应变曲线。通过Newton-Raphson算法对模型进行非线性有限元求解,分析试样在冲压过程中的三个方向的应变云图。结果表明,仿真结果与试验结果较为接近,可以根据有限元分析结果优化冲压成形工艺,从而指导DP1000高强钢的冲压成形试验。
DP1000 high-strength cold-rolled duplex steel has begun to be widely used in automotive and other industrial fields. A simplified finite element model of DP1000 high-strength steel stamping test was established. The true stress-strain curve of DP1000 steel was obtained by engineering stress-strain curve obtained from tensile test. The nonlinear finite element method was used to solve the model by Newton-Raphson algorithm, and the strain cloud in three directions during the stamping process was analyzed. The results show that the simulation results are close to the experimental ones, and the stamping process can be optimized according to the finite element analysis results to guide the stamping of DP1000 high strength steel.