CAJ | 학술논문

基于能量释放率研究Ⅲ型裂纹平面应变条件下的 J积分能量表达式。采用有限元软件模拟了工字梁腹板受扭转时裂纹裂尖应力奇异场，通过数值模拟得出裂纹区的应力、位移分布状态，并计算应力强度因子和J积分，从而验证表达式的可行性。
기우능량석방솔연구Ⅲ형렬문평면응변조건하적 J적분능량표체식。채용유한원연건모의료공자량복판수뉴전시렬문렬첨응력기이장，통과수치모의득출렬문구적응력、위이분포상태，병계산응력강도인자화J적분，종이험증표체식적가행성。
In this paper ,based on energy release rate ,the J integral energy expressions of crack type Ⅲ under plane strain condition is studied . The stress singular field of the crack tip in I-beam web is simulated by finite element software , the stress and displacement distribution of the crack zone are obtained by numerical simulation ,and the stress intensity factor and the J integral are calculated ,the feasibility of the expression is verified .