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摘要：
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在材料力学性能测试基础上,利用有限元仿真分析和网格应变试验,深入解析了汽车地板零件的成形特征及变形过程中金属流动规律,确定了零件成形过程中高应变区域的变形方式,指出了零件成形的关键材料性能指标及控制范围。结果表明,地板零件高应变区域的变形方式为胀形-拉延变形,稳定冲压所需的材料性能参数为:sσ/σb≤0.5,δ≥46%,n≥0.2,r≥2.0。
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FEA and circle grid analysis were used to determine the forming character and metal flowing on the base of mechanical properties of auto-floor.It is made clear that the forming style in high strain is a bulging-drawing state.The important property parameters and control ranges were also obtained.The material properties for stable stamping are: σs/σb≤0.5,δ≥46%,n≥0.2,r≥2.0.
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基金项目：
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作者简介：
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参考文献：
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[1]Wang Z R,Zhi Y S,Zeng Y S.The experimental research andfinite element simulation of plates hydrobulging in pairs[J].J.ofPressure Vessel and Piping,1996,68(3):43-48.
[2]赵侠,傅建,余玲,等.数值模拟技术在汽车覆盖件成形中的应用[J].锻压技术,2006,31(1):15-17.
[3]王晓路,陈炜,高霖,等.数值模拟对薄板冲压成形工艺设计的优化[J].锻压技术,2005,30(3):21-23.
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