| 改进四节点等参单元在一步成形模拟中的应用 |
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| 引用本文： | 那景新, 陆善彬, 闫亚坤, 胡平. 改进四节点等参单元在一步成形模拟中的应用[J]. 固体力学学报, 2004, 25(1): 80-82. doi: 10.3969/j.issn.0254-7805.2004.01.015 |
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| 作者姓名： | 那景新 陆善彬 闫亚坤 胡平 |
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| 作者单位： | 吉林大学汽车工程学院,长春,130022; 吉林大学汽车工程学院,长春,130022; 吉林大学南岭校区机械学院力学系,长春,130022; 吉林大学汽车工程学院,长春,130022 |
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| 基金项目： | 国家自然科学基金 ( 1983 2 0 2 0 )资助 |
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| 摘 要： | 在基本上不增加计算量的前提下,进一步提高一步成形逆有限元法的模拟精度,将四节点等参膜单元应用于一步成形计算,对空间四边形单元的四个节点可能不在同一平面引起的单元翘曲进行了修正,编写了计算机程序,对L形件进行了实际模拟,并将模拟结果与增量法模拟结果进行了比较,二者吻合较好.进而验证了本文方法的有效性.
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| 关 键 词： | 一步成形 等参膜单元 翘曲修正 |
| 修稿时间： | 2003-07-14 |
APPLICATION OF MODIFIED FOUR-NODE ISOPARAMETRIC ELEMENT IN ONE-STEP FORMING SIMULATION |
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| APPLICATION OF MODIFIED FOUR-NODE ISOPARAMETRIC ELEMENT IN ONE-STEP FORMING SIMULATION[J]. Chinese Journal of Solid Mechanics, 2004, 25(1): 80-82. doi: 10.3969/j.issn.0254-7805.2004.01.015 |
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| Authors: | Na Jingxin Lu Shanbin Yan Yakuan Hu Ping |
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| Affiliation: | Na Jingxin 1 Lu Shanbin 1 Yan Yakuan 2 Hu Ping 1 |
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| Abstract: | Under the prerequisite of not increasing the scale of calculation, to further enhance simulation precision of one-step forming finite element inverse approach, the four-node isoparametric membrane element is applied to one-step forming simulation. Then element warpage (which is caused by condition that the four nodes of spacial quadrilateral element may not be coplanar) is modified. Codes ware implemented to simulate practical forming of L-shaped cup. The simulation result is compared with that by increment method, and they agree quite well, which proved the validity of the method proposed in this paper. |
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| Keywords: | one-step forming isoparametric membrane element warpage modification |
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