外压法调整耐压球壳焊接残余应力的数值模拟与试验研究  

Numerical simulation and experimental study on welding residual stress of pressure hull with external pressure method

作　　者：张健[1] 刘红旭 昌满 卞如冈[2] ZHANG Jian;LIU Hong-xu;CHANG Man;BIAN Ru-gang(Jiangsu University of Science and Technology,Zhenjiang 212003,China;China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]江苏科技大学,江苏镇江212003 [2]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2018年第8期1020-1027,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金项目(51579121);江苏省产学研合作项目(BY2016073-04);江苏省高校自然基金重大项目(15KJA580002)

摘　　要：深海耐压球壳经过外压作用后结构的焊接残余应力会发生改变,文章首先运用ANSYS的APDL语言编写了深海耐压球壳人孔区域焊接残余应力数值模拟程序,对耐压球壳的初始残余应力和经过外压试验后的残余应力的变化进行计算;然后,对加工完成的试验模型采用X射线无损检测方法对该深海耐压球壳人孔区域的初始残余应力和经过外压试验后的残余应力进行测量。数值模拟结果与试验结果表明两者基本吻合;随着外压增加,最大残余拉应力和压应力都不断减小。该文研究结果为合理运用外压法调整焊接残余应力提供了依据。After the external pressure, the residual stress of the structure will change. In this paper, the numerical simulation of welding residual stress in manhole area of deep sea pressure spherical shell is prepared by using APDL language of ANSYS. The initial residual stress of the spherical shell under pressure and the residual stress after the external pressure test are calculated. Then, the initial residual stress and the residual stress after the external pressure test were measured by the X-ray non-destructive testing method. The numerical simulation results and experimental results show good agreement. With the increase of external pressure, the maximum residual tensile stress and compressive stress are decreasing. This study provides a basis for the reasonable adjustment of the residual stress by external pressure method.

关 键 词：耐压球壳 焊接残余应力 外压试验 

分 类 号：U661.72[交通运输工程—船舶及航道工程]