Development of advanced structural analysis methodologies for predicting widespread fatigue damage in aircraft structures [PDF]
NASA is developing a 'tool box' that includes a number of advanced structural analysis computer codes which, taken together, represent the comprehensive fracture mechanics capability required to predict the onset of widespread fatigue damage.
Harris, Charles E. +2 more
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Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending [PDF]
, 2019 Power plant piping system subjected to many cyclic loading conditions leads to fatigue loading and thereby crack initiation in the piping system. Demonstrating Leak-Before-Break (LBB) in the design stage itself plays an important role in ensuring the ...
K, Velusamy +3 more
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Q355B钢对接接头气孔缺陷对疲劳寿命影响的试验研究与数值模拟
Jianzhu Gangjiegou Jinzhan焊接过程常伴随着气孔、夹渣、咬边等缺陷的产生，这些缺陷在疲劳荷载作用下容易导致疲劳裂纹的产生和扩展。使用有限元软件ABAQUS结合断裂力学分析软件Franc3D，建立含气孔缺陷的对接接头有限元模型，并在应力集中最大值处植入裂纹，依据断裂力学M积分对含裂纹的模型进行数值模拟，得到了不同初始裂纹长度和焊缝宽度下裂纹尖端的应力强度因子。分析结果显示，裂纹尖端的应力强度因子对初始裂纹长度变化敏感，随长度增加而增加，而裂纹两端的应力强度因子则呈相反趋势；增加焊缝宽度可以显著降低应力强度因子，随着焊缝宽度的增加 ...
熊海江 +4 more
doaj +2 more sources
Jianzhu Gangjiegou Jinzhan轮载下正交异性钢桥面板的局部效应显著，相邻各疲劳易损细节的疲劳行为相互影响，特别是随着某个细节裂纹扩展，相邻细节疲劳应力可能增大，桥面板疲劳性能呈加速劣化趋势。疲劳应力响应及桥面板性能劣化评估已成为钢桥面板运营期面临的挑战和亟待进行的工作。为合理评估开裂正交异性钢桥面板的疲劳性能演化情况，基于既有足尺模型疲劳试验，综合采用有限元程序ANSYS和Franc3D的多尺度交互技术模拟钢桥面板典型疲劳易损细节裂纹扩展行为，探究裂纹扩展过程中各关键细节（顶板与U肋连接焊缝、U肋与横隔板连接焊缝、横隔板开孔处 ...
叶华文 +4 more
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Experimental and numerical investigation of the fatigue behaviour and crack evolution mechanism of granite under ultra-high-frequency loading. [PDF]
R Soc Open Sci, 2020 Zhou Y, Zhao D, Tang Q, Wang M.
europepmc +1 more source
Fatigue crack propagation analysis considering the dynamic crack-load coupling effect. [PDF]
Sci RepYu W, Yu Y, Shi F, Zhang C, Tu W.
europepmc +1 more source
Fatigue Performance Analysis of Weathering Steel Bridge Decks Under Residual Stress Conditions. [PDF]
Materials (Basel)Tian W, Li R, Lan T, Gao R, Li M, Liu Q.
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Fatigue Performance of Q500qENH Weathering Steel Welded Joints at Low Temperature. [PDF]
Materials (Basel)Kang L +7 more
europepmc +1 more source
Steel Catenary Riser Fatigue Assessment: Fracture Mechanics Approach Versus S-N Curve Method. [PDF]
Materials (Basel)Zhang N, Deng C, Zhang W, Li S, Gong B.
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The Effect of Weld Reinforcement and Post-Welding Cooling Cycles on Fatigue Strength of Butt-Welded Joints under Cyclic Tensile Loading. [PDF]
Materials (Basel), 2018 Araque O, Arzola N, Hernández E.
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