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铝合金厚板拉伸过程横向残余应力消减分析 被引量:14

Research of Transverse Stress Reduction in Prestretching of Aluminum Alloy Thick Plate
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摘要 运用Marc有限元软件对厚板预拉伸过程进行模拟分析,获得厚板沿厚度纵、横两个方向应力分布。结合仿真和实验,阐述了拉伸过程中横向应力削减现象,同时,将横向与纵向应力削减效果进行分析,论述了厚板横向残余应力演变的机理。分析认为,高强度残余应力使材料处在高弹性势能状态,在外力触发下有利于破坏晶粒横向平衡,从而改变了晶粒间原有应力平衡状态,实现横向应力逐层削弱。 The distribution of longitudinal(x) and transverse(y) stress along thickness is given by the simulation for pre-stretch processing of aluminum alloy thick-plate using non-liner software MSC. Marc. By simulation and experiment, the phenomena of transverse-stress decrease in stretch are expatiated. The evolvement mechanism of transverse stress is discussed by comparing decrease between longitudinal and transverse stress. The conclusion is that the high-intensity stress sets material in a state of high elastic potential energy, so the outside force makes for breaking down the transverse balance of grain, and changing original balance state of grain's stress, and then achives the decrease of transverse stress.
作者 吴运新 廖凯
出处 《材料工程》 EI CAS CSCD 北大核心 2009年第10期45-48,共4页 Journal of Materials Engineering
基金 国家重点基础研究发展计划(2005CB623708)
关键词 预拉伸 残余应力 横向应力 pre-stretch residual stress transverse stress
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  • 1胡华南,周泽华,陈澄洲.预应力加工表面残余应力的理论分析[J].华南理工大学学报(自然科学版),1994,22(2):1-10. 被引量:28
  • 2李昀泽,李金瀛.轧制不锈钢板材残余应力的测定[J].水利电力机械,1994,16(5):2-5. 被引量:2
  • 3宋仁国,曾梅光,张宝金,刘军,金真弘.7050铝合金晶界偏析与应力腐蚀、腐蚀疲劳行为的研究[J].中国腐蚀与防护学报,1996,16(1):1-8. 被引量:37
  • 4曾苏民.降低超厚铝合金锻件残余应力的试验[J].中国有色金属学报,1996,6(3):67-70. 被引量:7
  • 5米古茂[日] 朱荆璞等(译).残余应力的产生和对策[M].北京:机械工业出版社,1983..
  • 6[美]ATSM E837-81 顾唯明(译).用钻孔应变测量决定残余应力的标准方法[J].机械强度,1986,8(1):40-43.
  • 7[1]Brinksmeier E,Hannover J,Cammett T,et al.Residual stress-measurement and cause in machining process[J].Annals of the CIRP,1982,31(2): 491-509.
  • 8[2]Rammerstorfer F G,Fischer D F,Mitter W,et al.On thermo-elastic-plastic analysis of heat-treatment process including creep and phase changes[J].Computers and Structures,1981,13(4):771-779.
  • 9[3]Fletcher A J,Lewis C.Effect of free edge on thermal stre-ss in quenched steel plates[J].Material Science and Technology,1985,1(10):780-784.
  • 10[7]Zhang J,Dong P.Residual stress in welded moment frames and implications for structural performance[J].Journal of Structure Engineering,2000(3): 306-315.

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