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| 连续油管钢带斜焊温度场及残余应力场数值模拟 | |
| 引用本文： | 王文武,李继红,赵鹏康,张敏. 连续油管钢带斜焊温度场及残余应力场数值模拟[J]. 兵器材料科学与工程, 2011, 34(1): 67-71 |
| 作者姓名： | 王文武 李继红 赵鹏康 张敏 |
| 作者单位： | 煤炭科学研究总院,西安研究院,陕西,西安,710054;西安理工大学,陕西,西安,710048;西安理工大学,陕西,西安,710048 |
| 基金项目： | 陕西省教育厅自然科学基金资助项目(00k904); 陕西省重点学科建设专项资金资助项目(00X901) |
| 摘 要： | 采用有限单元法,模拟连续油管钢带斜焊及形变热处理过程中温度场和残余应力场的分布情况。结果表明:在焊接过程中焊缝附近温度梯度很大,远离焊缝的地方温度梯度渐渐趋于平缓;随着焊接热源的移动,温度中心也随之移动,最高温度可达母材的熔点,能量集中在很小的范围内,造成高度集中的瞬时热输入。焊后残余应力主要集中在焊缝附近,最大应力值为432 MPa;形变热处理之后残余应力集中分布在热处理区域的边界,最大应力值为431 MPa。对比发现形变热处理并不能减小或消除焊接残余应力,只能使残余应力重新分配,远离焊缝附近,使该位置的材料趋于安全。 |
| 关 键 词： | 连续油管 形变热处理 有限元 温度场 残余应力场 |
Numerical simulation of temperature and residual stress field of steel welding for coiled tubing |
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| WANG Wenwu,LI Jihong,ZHAO Pengkang,ZHANG Min. Numerical simulation of temperature and residual stress field of steel welding for coiled tubing[J]. Ordnance Material Science and Engineering, 2011, 34(1): 67-71 | |
| Authors: | WANG Wenwu LI Jihong ZHAO Pengkang ZHANG Min |
| Affiliation: | 1.Xi′an Branch,China Coal Research Institute,Xi′an 710054,China;2.Xi′an University of Technology,Xi′an 710048,China) |
| Abstract: | The temperature field and residual stress distribution of coiled tubing during steel welding and thermomechanical treatment process were simulated initially with the method of finite element.The results show that temperature gradient is high near the weld and becomes flat away from the weld.With the movement of welding thermal source,the temperature center also moves and the maximum temperature is up to the melting point of the base metal.Energy concentrates in a small range,resulting in transient high conc... |
| Keywords: | coiled tubing thermomechanical treatment finite element temperature field residual stress field |
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