- 多荷载联合作用下含穿透裂纹接管安全评定
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- 论文类型： 期刊论文
- 发表时间： 2022-06-29
- 发表刊物： 大连理工大学学报
- 所属单位： 化工学院
- 卷号： 52
- 期号： 4
- 页面范围： 487-491
- ISSN号： 1000-8608
- 摘要： There are still no reliable approaches to safety assessment on pressure
vessels containing defects under multiple loads now.The 3D finite
element method was adopted to calculate fracture ratio and load ratio
used in safety assessment for nozzle containing through-wall crack at
the shoulder under the combination of internal pressure and
moment.Research results indicate that fracture ratio can be obtained by
the stress intensity factor K_(Is) of crack under internal pressure and
moment,which is the summation of stress intensity factor of crack under
internal pressure and that under moment.Load ratio can be obtained by
actual external loads,limit internal pressure p and limit moment m,and
the relation between p and m fits the linearity
equation.Therefore,safety assessment of nozzle containing through-wall
crack at the shoulder under internal pressure and moment can be
accomplished. - 备注： 新增回溯数据
