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| 单元类型对有限元计算弯管截面畸变及壁厚变化的影响 |
| Effects of Element Types on Cross Sectional Distortion and Wall Thickness Variation in Finite Element Simulation |
| Received:December 05, 2011 Revised:May 10, 2012 |
| DOI： |
| 中文关键词: 管材弯曲 单元类型 壁厚变化 起皱 |
| 英文关键词: tube bending element type wall thickness variation wrinkling |
| 基金项目: |
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| 中文摘要: |
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| 英文摘要: |
| Based on rotary drawing bending tests of 1Cr18Ni9Ti tubes,finite element (FE) simulations were performed employing solid element and shell element respectively. It is revealed that ,both of the simulated results of solid element and shell element can characterize actual tube bending process and performances following bending while there exists acertain discrepancy in two elements. Compared with shell element ,solid element may reflectthe stress-strain state more accurately and provide a more correct result of cross sectional distortion during the bending operation. Butthe shell elementis more suitable than solid element in predicting wall thickness variation and the severity of wrinkling. |
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