The feature of macro-profile is analyzed, and the crack initiation and extending mechanism of brake disc is discussed.
分析了制动盘裂纹剖面的宏观形貌特征，并对制动盘裂纹萌生和扩展机理进行探讨。
The numerical simulation results show that the initiation, propagation and linking each other of crack in concrete samples at mesoscale level produce the macro-failure of concrete samples.
数值模拟结果显示混凝土破坏过程实际上就是微裂纹萌生、扩展、贯通，直到宏观裂纹产生导致混凝土失稳断裂的过程。
The simulations replicate most of the phenomena observed in actual experiments, such as initiation and growth of wing and secondary cracks, crack coalescence, and the macro-failure of the sample.
模拟复制最实际的实验，如启动和增长的机翼和二次裂纹，裂纹贯通，宏观失败的样本中观察到的现象。
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