Finite element simulation of aluminum alloy cross valve forming by multi-way loading

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 6; pp. 1059 - 1066
• Main Author: 张大伟 杨合 孙志超
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2010; State Key Laboratory of Solidification Processing, School of Materials Science and Engineering,Northwestern Polytechnical University, Xi'an 710072, China
• Subjects: 7075铝合金; Alloy development; Alloying elements; aluminum alloy; Aluminum base alloys; bulk forming; Computer simulation; cross valve; finite element simulation; Forming; Mathematical analysis; Mathematical models; multi-way loading; Valves; 加载路径; 成形载荷; 有限元模型; 有限元模拟; 过程模型; 非等温过程; multi-way loading; bulk forming; finite element simulation; cross valve; aluminum alloy
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60258-2

Deformation behavior,temperature evolution and coupled effects have a significant influence on forming process and quality of component formed,which are very complex in forming process of aluminum alloy 7075 cross valve under multi-way loading due to the complexity of loading path and the multiplicity of associated processing parameters.A model of the process was developed under DFEORM-3D environment based on the coupled thermo-mechanical finite element method.The comparison between two process models,the conventional isothermal process model and the non-isothermal process model developed in this study,was carried out,and the results indicate that the thermal events play an important role in the aluminum alloy forming process under multi-way loading.The distributions and evolutions of the temperature field and strain filed are obtained by non-isothermal process simulation.The plastic zone and its extension in forming process of cross valve were analyzed.The results may provide guidelines for the determination of multi-way loading forming scheme and loading conditions of the forming cross valve components.