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中文摘要：
依据弹塑性理论，对压力矫直理想弹塑性材料的厚壁钢管过程进行分析，针对其弹塑性弯曲阶段的塑性变形是否深入到内径，分别给出了2种情况的载荷一挠度数学模型，并通过有限元分析软件Ansys和实验对该模型进行了验证，结果表明该模型具有较高的精度。
英文摘要：
Based on the elastic-plastic mechanics theory the process of the pressure straightening for ideal elastic-plastic thick- walled steel pipe is analyzed. According to whether the plastic deformation of the elastic-plastic bending stage to inner diameter, the mathematical load-deflection model is established, the model is verified by finite element software Ansys and experiment. The results show that the model has high precision.
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Numerical simulation of diffusivity of hydrogen in thin tubular metallic membranes affected by self-
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