Abstract In the present study, weight function (WF) method was used to investigate the propagation pattern of a two-dimensional parallel subsurface crack under a moving contact pressure. Under contact loading, the crack was fully closed and only shear fracture modes led to the propagation. At first, the histories of stress intensity factors (SIFs) were calculated using the available two-dimensional WFs. Then, the SIFs range for four main points along the crack front and the Paris Law were utilized to determine step by step propagation. Results revealed WF method as an efficient method for fatigue analysis of fully closed cracks.

中文翻译：

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移动接触压力下二维地下裂纹的扩展模式

摘要 在本研究中，采用权重函数（WF）方法研究了移动接触压力下二维平行地下裂纹的扩展模式。在接触载荷下，裂纹完全闭合，只有剪切断裂模式导致扩展。首先，使用可用的二维 WF 计算应力强度因子 (SIF) 的历史记录。然后，利用沿裂纹前沿的四个主要点的 SIF 范围和巴黎定律来确定逐步扩展。结果表明，WF 方法是一种有效的全封闭裂纹疲劳分析方法。