东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (8): 810-813.DOI: -

• 论著 • 上一篇    下一篇

大型压力容器波动时效机理的动力学

李永强;刘杰;郭星辉;闻邦椿   

  1. 东北大学理学院;东北大学机械工程与自动化学院;东北大学理学院;东北大学机械工程与自动化学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 发布日期:2013-06-24
  • 通讯作者: Li, Y.-Q.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50075015)

Dynamics of wave vibration relief for heavy pressure vessel

Li, Yong-Qiang (1); Liu, Jie (2); Guo, Xing-Hui (1); Wen, Bang-Chun (2)   

  1. (1) Sch. of Sci., Northeastern Univ., Shenyang 110004, China; (2) Sch. of Mech. Eng. and Automat., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Published:2013-06-24
  • Contact: Li, Y.-Q.
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

375

摘要： 阐述了压力容器中焊接残余应力产生的原因、危害及振动时效的机理,由于振动时效中激振设备的激振频率太低,不易使大型压力容器产生共振,故时效效果不明显·波动时效法是利用移动激振力使构件在共振范围内产生共振,当波动应力与残余应力的叠加值大于材料的屈服极限时就达到消除残余应力的目的·从动力学方面对波动时效的机理进行了分析,给出了波动共振条件既当波动振动的激振力频率ω等于构件的固有频率加上或减去旋转角速度与节径数的乘积时,将使构件产生共振·以悬臂圆柱壳为例,计算了固有频率及轴向波动应力并与实验值进行了对比,结果表明波动时效法可以使大型压力容器中的残余应力得到降低·

关键词: 压力容器, 焊接, 残余应力, 波动时效

Abstract: The cause of welding residual stress and the principle of vibration stress relief for a pressure vessel were discussed. The wave vibration relief was put forward. The mechanism of wave vibration relief was analyzed from the dynamics aspect. Based on Flugge's shell equations, a method for calculating the eigen frequencies and modal solution was derived to the traveling-wave resonance response for a cylindrical shell. A speed formula for the rotating cylindrical shells at resonant frequency was obtained. Gauss method was exploited to calculate transcendental function of eigen frequency which can be solved with high accuracy. Calculation results of eigen frequency and axial wave stress were presented for a cantilever shell and mode shape was presented.

中图分类号: