When crack starts to grow, the normal stress and average atom energy at the crack tip in atomistic simulation agree well with the results of continuum analysis.
分子动力学模拟和宏微观分析均得到裂纹起始扩展的临界时刻、裂尖应力场和原子平均能量。
The normal stress in the center is only 77% of the average value.
正应力在边缘有应力集中，中央应力约为平均正应力的77%。
It is shown that the shear strength of joint is concerned with normal stress and weighted average of mean profile angles of joint surface.
说明节理的抗剪强度与法向应力和节理表面形貌特征参数有关。
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