[1]王元清,袁焕鑫,石永久,等.不锈钢焊接箱形截面残余应力试验与分布模型[J].东南大学学报(自然科学版),2013,43(5):979-985.[doi:10.3969/j.issn.1001-0505.2013.05.014]
 Wang Yuanqing,Yuan Huanxin,Shi Yongjiu,et al.Measurement and distribution models of residual stresses in welded stainless steel box sections[J].Journal of Southeast University (Natural Science Edition),2013,43(5):979-985.[doi:10.3969/j.issn.1001-0505.2013.05.014]
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不锈钢焊接箱形截面残余应力试验与分布模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第5期
页码:
979-985
栏目:
土木工程
出版日期:
2013-09-20

文章信息/Info

Title:
Measurement and distribution models of residual stresses in welded stainless steel box sections
作者:
王元清12袁焕鑫12石永久12舒赣平3廖东帆4
1清华大学土木工程系, 北京 100084; 2清华大学土木工程安全与耐久教育部重点实验室, 北京 100084; 3东南大学土木工程学院, 南京 210096; 4深圳市麦诺幕墙技术有限公司, 深圳 518020
Author(s):
Wang Yuanqing12 Yuan Huanxin12 Shi Yongjiu12 Shu Ganping3 Liao Dongfan4
1Department of Civil Engineering, Tsinghua University, Beijing 100084, China
2Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China
3School of Civil Engineering, Southeast University, Nanjing 210096, China
4 Measure Stick-Curtain Wall Structural Fittings Co., Ltd., Shenzhen 518020, China
关键词:
残余应力 不锈钢 焊接箱形截面 分布模型 分割法
Keywords:
residual stress stainless steel welded box section distribution model sectioning method
分类号:
TU391;TU317.1
DOI:
10.3969/j.issn.1001-0505.2013.05.014
摘要:
通过焊接加工奥氏体型S30408和双相型S22253两种材料牌号的8个不锈钢箱形截面试件,利用线切割将试件截面完全分割成条带,采用Whittemore手持应变仪量测各条带上释放的残余应变,从而测得试件截面上的残余应力大小与分布形态.试验结果表明,试件截面内残余拉应力峰值一般低于材料的名义屈服强度,奥氏体型S30408和双相型S22253两种不锈钢试件分别达到其名义屈服强度的80%和60%;而组成板件残余压应力的峰值随板件宽厚比的增大而降低.根据整理得出的残余应力量测结果,基于原有普通钢材焊接箱形截面的残余应力分布模型,提出了能够准确预测不锈钢焊接箱形截面残余应力分布的简化模型.测得的残余应力数据和提出的简化分布模型适用于不锈钢结构构件稳定性的相关研究.
Abstract:
Eight stainless steel box sections fabricated by welding, including austenitic grade S30408 and duplex grade S22253, were sectioned into small strips by means of the wire-cutting technology. A mechanical Whittemore gage was used to measure the relieved residual strains, and the magnitudes and distributions of the welding residual stresses in the test specimens were obtained. The experimental results show that the peak values of the tensile residual stress are always lower than the materials nominal yield strength, reaching 80% and 60% of the yield strengths for grades S30408 and S22253, respectively. Meanwhile, the peak compressive residual stress in plates decreases with the increase in the width-to-thickness ratio. Based upon the obtained measurement results and existing distribution models for carbon steel sections, the new accurate prediction models for residual stress distributions in welded stainless steel box sections were proposed. In general, the obtained test data and the proposed distribution models are suitable for further research on stability of fabricated structural stainless steel members.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 王元清(1963—), 男, 博士, 教授, 博士生导师, wang-yq@tsinghua.edu.cn.
基金项目: 高等学校博士学科点专项科研基金资助项目(20110002130002)、教育部博士研究生学术新人奖资助项目、北京市自然科学基金资助项目(8112018).
引文格式: 王元清,袁焕鑫,石永久,等.不锈钢焊接箱形截面残余应力试验与分布模型[J].东南大学学报:自然科学版,2013,43(5):979-985. [doi:10.3969/j.issn.1001-0505.2013.05.014]
更新日期/Last Update: 2013-09-20