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弯管内壁环向裂纹应力强度因子KI有限元分析
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Indexed by:期刊论文

Date of Publication:2012-11-15

Journal:管道技术与设备

Issue:6

Page Number:1-3,26

ISSN No.:1004-9614

Key Words:有限元法;应力强度因子;纵向裂纹角;环向裂纹角

Abstract:应力强度因子KI是缺陷结构安全评定的必要参数.利用有限元分析软件ANSYS自顶向下建模方法得到弯管内壁环向裂纹模型,并对KI进行计算与分析.结果表明:随裂纹深度α及裂纹半角θ的增大,KI都是先增大后平缓;KI与纵向裂纹角θ1无关;KI随环向裂纹角θ2的变化有3个波峰,自弯管外侧起分别为60°、180°与300°.因此,当α>4 mm,θ>20°且裂纹位于θ2的波峰位置时,结构处于最危险状态,需给予足够关注.

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Gender:Male

Alma Mater:大连理工大学

Degree:Doctoral Degree

School/Department:化工学院

Discipline:Chemical Process Equipment. Safety Science and Engineering

Business Address:大连理工大学西校区H509

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