作者：姚博, 蔡力勋, 江亚男
作者单位：西南交通大学力学与工程学院, 四川 成都 610031
关键词：O形环; 回弹量; 有限元分析; 304不锈钢; 60Si2Mn钢; TA16合金
摘要：
通过弹塑性有限元接触分析和循环压扁试验,对60Si2Mn、304不锈钢和TA16材料O形密封环管材在室温条件下的回弹行为进行了研究。结果表明:TA16合金O形管状试样回弹量H与60Si2Mn钢回弹量较为接近,且为304不锈钢回弹量的2～3倍;提出了用于O形环回弹量预测的回弹模型,该模型对这3种金属材料O形管状试样的预测结果和实验结果具有很好的一致性。
Research on springback of metallic O-rings sealing for pressure vessel
YAO Bo, CAI Li-xun, JIANG Ya-nan
School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China
Abstract: Based on a series of tests and elastic-plastic finite element analysis(EPFEA) with contact elements, the springback behavior of O-ring specimens for 60Si2Mn, stainless steel 304 and TA16 titanium alloy at room temperature were investigated. The results show that the springback of TA16 titanium alloy is close to that of 60Si2Mn, and it is 2 to 3 times larger than the springback of stainless steel 304. A model of the springback prediction of O-rings was proposed, and the experimental springbacks of the three materials were in agreement with the predicted results obtained from the new model.
Keywords: O-ring; springback; finite element analysis; stainless steel 304; 60Si2Mn steel; TA16 alloy
2012, 38(1): 25-27 收稿日期: 2010-12-1;收到修改稿日期: 2011-3-7
基金项目: 中央高校基本科研业务费专项项目(SWJTU09ZT35)
作者简介: 姚博(1986-),男,河南商丘市人,硕士研究生,专业方向为材料本构关系研究。
参考文献
[1] 曲家棣,盛贤科,王佩珠. GH 169镀银O形环冷、热态性能测试[J]. 压力容器,1997,14(3):183-188.
[2] 虞跃生,刘光宇. 管材压扁的回弹分析[J]. 金属成形工艺,2000,18(5):22-24.
[3] 蔡力勋,叶裕明,左国. Incone1718合金O形环的高温压扁弹塑性行为[J]. 上海交通大学学报,2005,39(5):818-822.
[4] 蔡力勋,左国,叶裕明,等. Incone1718合金短管高温低周疲劳行为[J]. 上海交通大学学报,2007,41(6):1003-1007.
[5] 左卫东,于溯源,刘俊杰,等. 10 MW高温气冷堆压力容器主法兰结构的有限元接触分析[J]. 核动力工程,2001,22(3):226-230.
[6] 余伟炜,蔡力勋,叶裕明,等. Incone1718 合金O形环回弹特性研究[J]. 工程力学,2006,23(6):142-147.
[7] Kobayashi T. Deformation characteristics of a metal hollow O-ring[J]. Analysis of Bolted Joints,1999(382):7-12.
[8] 彭向和,高芝晖,曾祥国. O形密封环的弹塑性大变形和循环松弛分析[J]. 重庆大学学报,1998,21(2):46-49.
[9] 陈洪军,蔡力勋. 304不锈钢O形环回弹量的预测模型研究[J]. 机械强度,2009,31(3):443-447.
[10] 郝文化,叶裕明,肖新标,等. ANSYS土木工程应用实例[M]. 北京:中国水利水电出版社,2005:220-224.
