高强度螺栓氢扩散模拟研究
Hydrogen diffusion simulation of high strength bolts
杨慧慧 1杨俊峰 1范芳雄 1鲁钰斌 1孟秋达 2王灵水1
作者信息
- 1. 中船双瑞(洛阳)特种装备股份有限公司,河南 洛阳 471000
- 2. 中国船舶集团有限公司第七二五研究所,河南 洛阳 471000
- 折叠
摘要
利用有限元软件,建立了应力—氢扩散顺序耦合分析模型,对M56高强度螺栓服役及卸载过程中的应力分布、充氢及氢逸出过程进行了模拟分析.通过计算,获得了螺栓在预紧力作用下的应力分布情况,以及氢在螺栓内部的瞬态分布规律.对比有无应力对氢扩散结果的影响发现:应力的存在会加速氢向拉应力方向扩散.在应力作用下并对螺栓实物的氢含量进行了测量,结果显示,模拟值与测量值分布规律基本一致,验证了模拟过程的准确性.
Abstract
The stress-hydrogen diffusion sequential coupling analysis model is established to simulate the stress distribution,hydrogen charging and hydrogen escaping process during the service and unloading of M56 high strength bolts based on the finite element software. Through calculation,the stress distribution of the bolt under the action of pretension force and the transient distribution law of hydrogen inside the bolt are obtained. By comparing the influence of stress on the results of hydrogen diffusion,it can be found that under the action of stress,hydrogen diffusion accumulates in the tensile stress area. The hydrogen content of the bolt is measured,and the results show that the simulated value is basically consistent with the distribu-tion law of the measured value,which verifies the accuracy of the simulation process.
关键词
有限元分析/应力诱导/氢扩散Key words
Finite element analysis/Stress induction/Hydrogen diffusion引用本文复制引用
出版年
2024
NETL
NSTL
万方数据