逐层填料建模的多层多道焊残余应力数值分析

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逐层填料建模的多层多道焊残余应力数值分析

巩庆涛¹,胡广旭²,苗玉刚¹,孟梅¹,郑红³

文章导航 > 焊接学报 > 2018 > 39(7): 12-16

巩庆涛1,胡广旭2,苗玉刚1,孟梅1,郑红3. 逐层填料建模的多层多道焊残余应力数值分析[J]. 焊接学报, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

引用本文:

巩庆涛¹,胡广旭²,苗玉刚¹,孟梅¹,郑红³. 逐层填料建模的多层多道焊残余应力数值分析[J]. 焊接学报, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

GONG Qingtao1, HU Guangxu2, MIAO Yugang1, MENG Mei1, ZHENG Hong3. Numerical analysis of multi-pass welding residual stresses based on processes chain simulation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

Citation:

GONG Qingtao¹, HU Guangxu², MIAO Yugang¹, MENG Mei¹, ZHENG Hong³. Numerical analysis of multi-pass welding residual stresses based on processes chain simulation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

逐层填料建模的多层多道焊残余应力数值分析

doi: 10.12073/j.hjxb.2018390166

巩庆涛¹,胡广旭²,苗玉刚¹,孟梅¹,郑红³

1. 哈尔滨工程大学船舶工程学院, 哈尔滨 150001;
2. 哈尔滨商业大学机械系, 哈尔滨 150028;
3. 哈尔滨焊接研究院有限公司, 哈尔滨 150028

基金项目: 国防技术基础项目（KY10100160012）

Numerical analysis of multi-pass welding residual stresses based on processes chain simulation

GONG Qingtao¹, HU Guangxu², MIAO Yugang¹, MENG Mei¹, ZHENG Hong³

1. Harbin Engineering University, College of Shipbuilding Engineering, Harbin 150001, China;
2. Harbin University of Commerce, Department of Mechanical Engineering, Harbin 150028, China;
3. Harbin Welding Institute Limited Company, Harbin 150028, China

摘要: 基于连续数值模拟技术，在多层多道焊数值建模时，逐步添加每一层焊缝网格模型，进行分步的模拟计算，实现了有效的多层多道焊接热—力耦合有限元计算.利用连续模拟方法与非连续模拟方法，计算分析了多层多道焊试验模型.结果表明，与非连续模拟方法相比，连续建模方法收敛性好，且纵向残余应力峰值结果较传统建模方法更准确.同时，分析了热—力作用下多层多道焊缝的应力演变历程，揭示了多重热循环作用下焊缝纵向残余应力的变化过程.
- 数值模拟 /
- 多层多道焊 /
- 热力耦合 /
- 残余应力 /
- 有限元
Abstract: Based on processes chain simulation technology, a gradually added filler element method was applied for modeling multi-pass welding and the simulation was achieved step by step with coupled thermal-mechanical finite element method. A research part of multi-pass welding was simulated by both the chain simulation technology and the traditional method. To compare the two simulations, convergence for the chain simulation technology is better and its results of longitudinal residual stresses are more accuracy. Meanwhile, the stress evolution history under the thermal-mechanical activities of multi-pass welding was analyzed, and the principle of longitudinal stresses changing under multi-thermal cycles was revealed.
- numerical simulation /
- multi-pass welding /
- coupled thermal-mechanical /
- residual stresses /
- processes chain simulation

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逐层填料建模的多层多道焊残余应力数值分析

doi: 10.12073/j.hjxb.2018390166

巩庆涛¹,胡广旭²,苗玉刚¹,孟梅¹,郑红³

1. 哈尔滨工程大学船舶工程学院, 哈尔滨 150001;
2. 哈尔滨商业大学机械系, 哈尔滨 150028;
3. 哈尔滨焊接研究院有限公司, 哈尔滨 150028

基金项目: 国防技术基础项目（KY10100160012）

收稿日期: 2018-03-28

关键词:

多层多道焊 /

摘要: 基于连续数值模拟技术，在多层多道焊数值建模时，逐步添加每一层焊缝网格模型，进行分步的模拟计算，实现了有效的多层多道焊接热—力耦合有限元计算.利用连续模拟方法与非连续模拟方法，计算分析了多层多道焊试验模型.结果表明，与非连续模拟方法相比，连续建模方法收敛性好，且纵向残余应力峰值结果较传统建模方法更准确.同时，分析了热—力作用下多层多道焊缝的应力演变历程，揭示了多重热循环作用下焊缝纵向残余应力的变化过程.

English Abstract

巩庆涛1,胡广旭2,苗玉刚1,孟梅1,郑红3. 逐层填料建模的多层多道焊残余应力数值分析[J]. 焊接学报, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

引用本文:

巩庆涛¹,胡广旭²,苗玉刚¹,孟梅¹,郑红³. 逐层填料建模的多层多道焊残余应力数值分析[J]. 焊接学报, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

GONG Qingtao1, HU Guangxu2, MIAO Yugang1, MENG Mei1, ZHENG Hong3. Numerical analysis of multi-pass welding residual stresses based on processes chain simulation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

Citation:

GONG Qingtao¹, HU Guangxu², MIAO Yugang¹, MENG Mei¹, ZHENG Hong³. Numerical analysis of multi-pass welding residual stresses based on processes chain simulation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 12-16. doi: 10.12073/j.hjxb.2018390166

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