基于数值计算的切割焊接连续加工残余应力演变过程研究

来源 :2012年第二届全国现代制造集成技术学术会议 | 被引量 : 0次 | 上传用户：guofeng7303

【摘要】

：

热切割与焊接在船舶制造中以先后顺序连续作用于构件,形成复杂的工艺耦合残余应力场,为掌握船体结构残余应力分布带来困难.该文以典型的平板结构切割成形后对接焊工艺过程为对象,基于热弹塑性有限元法,建立该过程的数值计算模型,分析切、焊耦合残余应力的分布规律与演变过程.结果表明:在切焊连续加工中,沿焊缝边缘存在超过材料屈服点的拉应力区,其宽度大于单独进行切割或焊接工艺时的情况;距焊缝较远位置的应力不仅受其温

【作者】

：

韦智元刘玉君纪卓尚

【机构】

：

工业装备结构分析国家重点实验室,辽宁大连 116024;大连理工大学船舶工程学院,辽宁大连 116024

【出处】

：

2012年第二届全国现代制造集成技术学术会议

【发表日期】

：

2012年4期

【关键词】

：

船舶制造热切割焊接工艺残余应力演变过程数值计算

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基于数值计算的切割焊接连续加工残余应力演变过程研究

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