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用刚塑性有限单元法计算塑性压缩过程金属的流动
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英文标题：USING THE RIGID-PLASTIC FINITE ELEMENT METHOD TO CALCULA TE THE FLOW OF METAL IN THE PLASTIC COMPRESSION |
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作者：林桐 周宝焜 |
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单位： 北京钢铁学院 北京钢铁学院 |
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出版年,卷(期):页码：1981,6(5):7-14 |
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摘要：
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本文叙述了刚塑性有限单元法的基本原理;对无外区及有外区的平面应变压缩过程采用八节点曲边四边形等参单元,计算了流动速度场、应变场、外力等,并描绘出在实际压缩中出现的折迭以及在不同高宽比时的单鼓、双鼓等现象;将计算所得到的总压力及断面上网格的畸变与实验结果进行了比较。
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The foundational principle of rigid-plastic finite element method is discribed in this article. To the compression procedure of plane strain with and without ends the 8 nodal curved quadrilatoral isoparametric elements are introduced for the calculation of the flow velocity field, strain field and boundary traction. The folding and the phynomenon of one bulge and twin bulge with different ratios of hight to width appearing in the practical compressing are discribed. The total pressure and the distortion of the net-check on the section got from the calculation have been com pared with the experemental data.
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参考文献：
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[1] Y.Yamada, N,Yoshimura, T Sak urat, Plastic Strelss-Strain Matrix and Its Application for the Solution of Elastic-plastic Problems by the Finite Element Method, Int.J.Mech. sci 10-5, 1968
[2] S.S.Rao, Alok Kumar Finite Element Analisis of Cold Strip Rolling, Machine tool design and research17-3, P159-168, 1977
[3] #12
[4] 乔端,茹铮,钱仁根金属材料冷变形抗力实验测定及其理论计算,北京钢铁学院学报 1981年第二期
[5] 乔端 钱仁根 用弹塑性有限元素法解平压头的压入问题(待发表)
[6] #12
[7] C.H.Lee, S.kobayashi New Solution to Rigid-plastic Deformation Problems Using a Matrix method Tran. ASME. J. Eng. Ind. ser. B 95-3, 1973
[8] 钱伟长 变分法及有限元科学出版社,1980
[9] 李大潜 有限元素法续讲科学出版社,1979
[10] O.C.Zienlsiewiez The Finite Element Method MeGraw-Hill book compang(UK)Limited,third edition,1977
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