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首页> 外文期刊>Journal of thermal stresses >AN ARRAY OF PARALLEL EDGE CRACKS WITH ALTERNATING LENGTHS IN A STRIP SUBJECTED TO A THERMAL SHOCK
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AN ARRAY OF PARALLEL EDGE CRACKS WITH ALTERNATING LENGTHS IN A STRIP SUBJECTED TO A THERMAL SHOCK

机译：受热冲击的带中具有可改变长度的平行边裂纹的阵列

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摘要

Ceramics and other brittle materials suffer multiple surface cracking when subjected to quenching. These surface cracks greatly Influence the thermal fracture behavior of brittle materials. This paper considers an array of parallel edge cracks with alternating lengths in an elastic plate subjected to a thermal shock. A Fourier transform/superposition method is used to derive the coupled integral equations that govern the displacement discontinuity gradients along the surfaces of the long and short cracks. Thermal stress intensity factors at the tips of the long and short cracks are calculated from the numerical solutions of the integral equations. The numerical results indicate that the crack length ratio and crack spacing have profound effects on the thermal stress intensity factors.
机译：陶瓷和其他脆性材料在进行淬火时会遭受多次表面开裂。这些表面裂纹极大地影响了脆性材料的热断裂行为。本文考虑了受到热冲击的弹性板中长度互不相同的平行边缘裂纹阵列。使用傅立叶变换/叠加法来导出耦合积分方程，该积分方程控制沿着长裂纹和短裂纹表面的位移不连续性梯度。根据积分方程的数值解计算长裂纹和短裂纹尖端的热应力强度因子。数值结果表明，裂纹长度比和裂纹间距对热应力强度因子有深远的影响。

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