INFLUENCE OF CLADDING ON CONSTRAINT EFFECT OF REACTOR PRESSURE VESSEL SUBJECTED TO PRESSURIZED THERMAL SHOCK

YANG XiaoHua; WANG ZhongXian

doi:10.16579/j.issn.1001.9669.2018.05.030

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INFLUENCE OF CLADDING ON CONSTRAINT EFFECT OF REACTOR PRESSURE VESSEL SUBJECTED TO PRESSURIZED THERMAL SHOCK

更新时间：2022-09-22

- INFLUENCE OF CLADDING ON CONSTRAINT EFFECT OF REACTOR PRESSURE VESSEL SUBJECTED TO PRESSURIZED THERMAL SHOCK
- Journal of Mechanical Strength Vol. 40, Issue 5, Pages: 1200-1204(2018)
- 作者机构：
  
  1. 江苏大学土木工程与力学学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.05.030
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YANG XiaoHua, WANG ZhongXian. INFLUENCE OF CLADDING ON CONSTRAINT EFFECT OF REACTOR PRESSURE VESSEL SUBJECTED TO PRESSURIZED THERMAL SHOCK. [J]. 40(5):1200-1204(2018)
DOI：

YANG XiaoHua, WANG ZhongXian. INFLUENCE OF CLADDING ON CONSTRAINT EFFECT OF REACTOR PRESSURE VESSEL SUBJECTED TO PRESSURIZED THERMAL SHOCK. [J]. 40(5):1200-1204(2018) DOI： 10.16579/j.issn.1001.9669.2018.05.030.

摘要

建立了含有轴向表面裂纹的反应堆压力容器筒体的三维有限元模型,裂纹纵深比取为a/c=1/2(a=30 mm,c=60 mm)。取堆焊层厚度分别为h=0 mm、4 mm和8 mm,对其在承压热冲击作用下的瞬态进行了双参数弹塑性断裂力学分析。利用J-A,2,法和J-Q法讨论了堆焊层厚度对结构完整性的影响。结果表明,堆焊层厚度增加可降低最危险时刻裂纹前沿的J积分;堆焊层和母材界面附近的A,2,和Q有所增加。但最大值点仍然在裂纹最深点附近,并且随着堆焊层厚度增加而减小。

Abstract

The 3 D FE models of reactor pressure vessel（ RPV） with an axial crackwere built. The aspect ratio of the crack is a/c = 1/2（ a = 30 mm,c = 60 mm）. The elastic-plastic fracture mechanics analysis of reactor pressure vessels with different cladding thickness（ h = 0 mm,4 mm and 8 mm） subjected to pressurized thermal shock（ PTS） transients was studied. The influence of cladding thickness on integrity has been discussed by using J-A,2, method and J-Qmethod. The result shows that the Jintegral on the front of crack decreases with the increasing thickness of cladding. The Q and A,2, valueincreases near the interface between cladding and base material. But the maximum of Q and A,2, ofcladding on the front of the crack is near the deepest point of the crack and decreases with the increasing cladding thickness.

关键词

反应堆压力容器堆焊层结构完整性承压热冲击

Keywords

Reactor pressure vesselCladdingIntegrity of structurePressurized thermal shock

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