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摘要：
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采用三维光弹应力冻结法,模拟研究挤压平模的三维应力场,得到了矩形模、T形模σx、σy、zσ在XY面上和沿高向的分布规律。同时采用多元回归统计分析法,对试验结果进行拟合,建立了应力场模型,为挤压模具设计提供参考。
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The three-dimension stress field of extrusion dies has been simulated and studied by using there-dimension photoelasticity of stress freezing method.The rule of the distribution of σ_x、σ_y、σ_z of rectangular and T-shaped dies on XY plane and in direction of Z is discovered.The model of stress field for extrusion dies is obtained by treating experimental results with multiple-unit regression analysis method and can provide the reference for die design.
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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]倪正顺,帅词俊,钟掘.热挤压模具的有限元分析与优化设计[J].机械科学与技术,2004,23(1):31 32.
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