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环形铸坯孔洞压实的力学分析与数值模拟
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英文标题：The Mechanial Analysis and Numerical Simulation for Closing Hole in Casting Ring Blank |
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作者：罗守靖 何绍元 高霖 |
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出版年,卷(期):页码：1990,15(2):2-8 |
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摘要：
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本文讨论了应力状态类型与孔洞变形类型间的关系,推导了等静压对空洞压实的影响表达式,并得出仅靠等静压不能压实孔洞的结论。利用上限原理对孔洞压实过程进行了模拟并和试验作了比较,从而验证了上述结论的正确性。
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The relationship between stress state and hole deformation is analyzed. The formulae for closing hole by applying equal compression pressure are deduced. The results confirm that the hole can not be closed by the pressure only. According to the upper limit principle, the process simulation for closing hole has been done, and the results are compared with the experiments.
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参考文献：
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[1] 中岛浩衙等:大型热间自由锻造时内部应力特征,塑性加工,Vol.22,No.249,1035～1042,1981．
[2] K. J. Kahlow:Void behavior as influenced by pressure and plastic deformation, J. of Eng. for Industry,Vol. 96, Series B. 901-910, 1974．
[3] 杨煜生等:钢锭内部缺陷的锻合及试验方法,2-4,黑龙江省锻压学术会议论文,1986．
[4] 徐秉业等:塑性理论简明教程,214-217,清华大学出版社,1981．
[5] 汪大年:金属塑性成形原理,135-137,机械工业出版社,1982．
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