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基于CEL方法搅拌摩擦焊材料流动及缺陷的模拟
Alternative TitleSimulation on material flow and defect during friction stir welding based on CEL method
朱智; 王敏; 张会杰; 张骁; 于涛; 吴振强
Department空间自动化技术研究室
Source Publication中国有色金属学报
ISSN1004-0609
2018
Volume28Issue:2Pages:294-299
Indexed ByEI ; CSCD
EI Accession number20183505744941
CSCD IDCSCD:6351200
Contribution Rank1
Funding Organization国家自然科学基金资助项目(51505471)
Keyword搅拌摩擦焊 材料流动 焊接缺陷 欧拉-拉格朗日耦合方法 数值模拟
Abstract

基于欧拉-拉格朗日耦合(CEL)方法,建立一个新的搅拌摩擦焊多场耦合计算模型,模拟焊接过程中焊缝区材料的塑性流动与缺陷形成,并通过开展搅拌摩擦焊试验,分别从温度场、焊缝宏观形貌、焊缝截面塑性应变及焊接缺陷几方面对模拟结果的准确性进行验证。结果表明:模拟温度与实测数据吻合较好,最大误差为23.4℃;焊缝宏观形貌、焊缝截面塑性应变区的形状和尺寸均与实际焊缝吻合较好;模型能够较准确地预测焊缝内部孔洞缺陷的形成,且缺陷产生的位置与实际位置相吻合,缺陷尺寸的模拟值略大于其实测值。

Other Abstract

A new multi-physics coupling numerical model for friction stir welding was established based on coupled Eulerian-Lagrangian (CEL) method. The model was utilized to simulate the material flow and defect formation in the weld during welding. The friction stir welding was conducted to verify the model through the comparison of temperature field, macro morphology of weld, plastic strain in the weld and welding defect. The results show that the simulation temperatures agree well with the measured data and the maximum error is 23.4 ℃. The macro morphology of the weld, the plastic strain zone shape and size on the weld cross-section are in good agreement with the actual weld. The model can accurately predict the formation of void defect in the weld, and the simulated void position is consistent with the actual position. But the void size is overestimated slightly.

Language中文
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/21591
Collection空间自动化技术研究室
Corresponding Author朱智
Affiliation中国科学院沈阳自动化研究所机器人学国家重点实验室
Recommended Citation
GB/T 7714
朱智,王敏,张会杰,等. 基于CEL方法搅拌摩擦焊材料流动及缺陷的模拟[J]. 中国有色金属学报,2018,28(2):294-299.
APA 朱智,王敏,张会杰,张骁,于涛,&吴振强.(2018).基于CEL方法搅拌摩擦焊材料流动及缺陷的模拟.中国有色金属学报,28(2),294-299.
MLA 朱智,et al."基于CEL方法搅拌摩擦焊材料流动及缺陷的模拟".中国有色金属学报 28.2(2018):294-299.
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