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| 锥柱结构焊接残余应力及超声冲击消除的研究 | |
| 引用本文： | 李良碧,万正权,潘广善,卞如冈,王自力.锥柱结构焊接残余应力及超声冲击消除的研究[J].中国造船,2011,52(1). |
| 作者姓名： | 李良碧 万正权 潘广善 卞如冈 王自力 |
| 作者单位： | 1. 江苏科技大学,船舶与海洋工程学院,江苏,镇江,212003;中国船舶科学研究中心,江苏,无锡,214082 2. 中国船舶科学研究中心,江苏,无锡,214082 3. 江苏科技大学,船舶与海洋工程学院,江苏,镇江,212003 |
| 基金项目： | 国家自然科学基金资助项目(NO.10972204) |
| 摘 要： | 随着高强钢潜艇锥柱结构的广泛应用,影响结构性能的焊接残余应力的测量和残余应力消除的技术备受关注。采用X射线衍射技术对高强钢潜艇锥柱结构内外壳的轴向焊接残余应力进行无损检测。内壳轴向残余应力的分布在焊缝两侧呈双峰形态,均为拉应力,而后随着与焊缝距离的增加,残余应力快速降低;而外壳轴向残余应力在锥端焊趾部分达到最大残余压应力值。还进行了超声冲击消除焊接残余应力前后的对比试验。试验结果表明,超声冲击处理对降低焊缝及近焊缝区的残余应力有很大的益处,残余拉应力经冲击处理后转变为对疲劳强度有利的较大幅值的压应力。 |
| 关 键 词： | 船舶、舰船工程 潜艇锥柱结构 焊接残余应力 超声冲击 消除 |
Experimental Research on Welding Residual Stresses and Their Release for Submarine Cone-cylinder Structure |
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| LI Liangbi,WAN Zhengquan,PAN Guangshan,BIAN Rugang,WANG Zili.Experimental Research on Welding Residual Stresses and Their Release for Submarine Cone-cylinder Structure[J].Shipbuilding of China,2011,52(1). | |
| Authors: | LI Liangbi WAN Zhengquan PAN Guangshan BIAN Rugang WANG Zili |
| Institution: | LI Liangbi1,2,WAN Zhengquan2,PAN Guangshan1,BIAN Rugang2,WANG Zili1(1.School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhengjiang 212003,China,2.China Ship Scientific Research Center,Wuxi 214082,China) |
| Abstract: | With the wide use of submarine high strength steel cone-cylinder pressure shell structure,the technology of residual stresses measurement and their release has been paid more and more attention to.The axial residual stress of cone-cylinder structure will influence on fatigue strength,and it is tested with XRD in the paper.It is obtained that the inner shell axial residual stress is tensile stress and reaches two peaks near the welding toes,then the stress decreases with the increase of the distance from the... |
| Keywords: | ship engineering submarine cone-cylinder structure welding residual stress ultrasonic impact release |
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