航空学报 > 2004, Vol. 25 Issue (4): 429-432

铝合金厚板淬火残余应力的有限元模拟及其对加工变形的影响

董辉跃1, 柯映林1, 孙杰1, 吴群2   

  1. 1. 浙江大学机械与能源工程学院, 浙江杭州 310027;2. 成都飞机工业集团 有限责任公司, 四川成都 610092
  • 收稿日期:2003-06-20 修回日期:2003-10-27 出版日期:2004-08-25 发布日期:2004-08-25

Finite Element Method Simulation for Residual Stress in Quenched Aluminum Alloy Thick-Plate and Its Effect on Machining Distortion

DONG Hui-yue1, KE Ying-lin1, SUN Jie1, WU Qun2   

  1. 1. College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China;2. Chengdu Aircraft Industrial GroupCo. LTD., Chengdu 610092, China
  • Received:2003-06-20 Revised:2003-10-27 Online:2004-08-25 Published:2004-08-25

摘要: 航空整体结构件在加工过程中容易发生较大变形。为了研究毛坯的初始残余应力对整体结构件加工变形的影响,采用准耦合方法,利用有限元软件ABAQUS模拟7075铝合金毛坯的淬火过程,研究该过程中温度的变化和残余应力的分布规律,并在含有淬火残余应力的毛坯上进行材料去除模拟。结果表明,模拟产生的比例件的变形与实际加工的比例件的变形非常近似,从而证明了毛坯的初始残余应力是引起整体结构件加工变形的主要因素,同时验证了准耦合淬火模拟的有效性。

关键词: 整体结构件, 淬火, 残余应力, 变形

Abstract: Large aviation integrated structure part is prone to distortion during machining. To assess the effect of initial residual stress in blank on the deformation, a quenching analysis of 7075 aluminum alloy is carried out by employing a sequentially coupled thermal and mechanical procedure. The changing temperature and the resultant distribution of residual stress are investigated. Furthermore, redundant material is removed from the blank which possesses quenched residual stress, and a reduced scale...

Key words: integrated structure part, quenching, initial residual stress, machining distortion