ASYMPTOTIC SOLUTIONS OF MODE I STEADY GROWTH CRACK IN MATERIALS UNDER CREEP CONDITIONS

被引：7
|
作者：
Meng, Qinghua [1 ]
Wang, Zhenqing [1 ]
机构：
[1] Harbin Engn Univ, Coll Aerosp & Civil Engn, Harbin 150001, Peoples R China
来源：
ACTA MECHANICA SOLIDA SINICA | 2015年 / 28卷 / 05期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
asymptotic analysis; steady-state growth; small scale conditions; creep materials; QUASI-BRITTLE DAMAGE; FAST FRACTURE; GROWING CRACK; STRAIN FIELD; TIP FIELD; STRESS;
D O I：
10.1016/S0894-9166(15)30051-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An asymptotic analysis is made on problems with a steady-state crack growth coupled with a creep law model under tensile loads. Asymptotic equations of crack tip fields in creep materials are derived and solved numerically under small scale conditions. Stress and strain functions are adopted under a polar coordinate system. The governing equations of asymptotic fields are obtained by inserting the stress field and strain field into the material law. The crack growth rate rather than fracture criterion plays an important role in the crack tip fields of materials with creep behavior.
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页码：578 / 591
页数：14
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