Hydro-forming of aluminum alloy complex-shaped components
来源期刊：中国有色金属学报(英文版)2011年第z2期
论文作者：LIU Xin XU Yong-chao YUAN Shi-jian
文章页码：417 - 422
Key words：aluminum alloy; sheet component; doubly-curved surface; chamber pressure
Abstract: Aimed at the high rejection ratio, poor dimensional precision and low fatigue durability for aluminum alloy complex- shaped components with a doubly curved surface, formed by conventional deep drawing and drop stamping, the hydroforming was used to investigate its formability. Based on numerical simulations and experiments, the deformation mode and the process were analyzed during hydromechanical deep drawing. The wrinkle and the fracture were discussed, and the stress state and stress value were explored in the area of defects. The results show that the reasonable chamber pressure to avoid the above defects is 10-30 MPa. According to the effects of loading paths on the thickness, a reasonable pressure of 20 MPa is determined finally.
LIU Xin, XU Yong-chao, YUAN Shi-jian
(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
Abstract:Aimed at the high rejection ratio, poor dimensional precision and low fatigue durability for aluminum alloy complex- shaped components with a doubly curved surface, formed by conventional deep drawing and drop stamping, the hydroforming was used to investigate its formability. Based on numerical simulations and experiments, the deformation mode and the process were analyzed during hydromechanical deep drawing. The wrinkle and the fracture were discussed, and the stress state and stress value were explored in the area of defects. The results show that the reasonable chamber pressure to avoid the above defects is 10-30 MPa. According to the effects of loading paths on the thickness, a reasonable pressure of 20 MPa is determined finally.
Key words:aluminum alloy; sheet component; doubly-curved surface; chamber pressure
