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围压与径向荷载共同作用下巴西盘裂纹应力强度因子的解析解

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Indexed by:期刊论文

Date of Publication:2018-01-01

Journal:计算力学学报

Included Journals:CSCD

Volume:35

Issue:2

Page Number:168-173

ISSN No.:1007-4708

Key Words:断裂力学;权函数法;有限元法;应力强度因子;巴西盘

Abstract:利用权函数法推导了围压和径向荷载共同作用下,考虑裂纹面摩擦的预制裂纹巴西盘应力强度因子计算公式,从理论上分析了围压、径向荷载和裂纹面摩擦对巴西盘应力强度因子的影响.结果表明,围压对Ⅰ型应力强度因子有很大影响,Ⅰ型应力强度因子随围压的增大而减小.当裂纹面闭合后围压和摩擦系数对Ⅱ型应力强度因子同样具有显著影响,考虑裂纹面有效剪应力的权函数法理论解与有限元数值解相吻合,表明理论分析的正确性.

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