Abstract Discrete element method simulations are used to investigate the effects of particle shape on the plastic behaviour of sand. This is achieved by using four different shapes of crushable particles. The behaviours of the different particles when subjected to isotropic compression, triaxial shearing, and a range of stress path tests are compared, revealing the important role of particle shape on key aspects of behaviour. Yield surfaces are established and analysed with respect to different modes of deformation, and are also shown to depend on the particle shape. A simple state boundary surface is then obtained, which is confirmed by a performing an additional stress path test on a sample that had been sheared to a critical state.

中文翻译：

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颗粒形状对可碎砂屈服行为的影响

摘要 离散元法模拟用于研究颗粒形状对砂子塑性行为的影响。这是通过使用四种不同形状的可压碎颗粒来实现的。比较了不同颗粒在受到各向同性压缩、三轴剪切和一系列应力路径测试时的行为，揭示了颗粒形状对行为关键方面的重要作用。屈服面是根据不同的变形模式建立和分析的，并且还显示出取决于颗粒形状。然后获得一个简单的状态边界表面，这通过对已剪切到临界状态的样品执行附加应力路径测试来确认。