the Study of Coarse Materials' Elastic-plastic Constitutive Relation Model
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摘要: 通过粗粒料三轴剪力试验和强度试验资料,进行回归得到了粗粒料的强度准则τ=Aσb,并以此为屈服准则,结合弹塑性理论建立了粗粒料的弹塑性本构模型,该模型连续、不存在奇点,模型参数少。推导出粗粒料的弹塑性矩阵 D ep,试验结果与模型计算结果吻合较好。Abstract: Through regressing the strength curves of coarse materials in test,establishing a strength criterion (τ=Aσb), based on this yield criterion and elastic-plastic theory,establishing a elastic plastic constitutive relation model of coarse material,which is continuative,no odd and has less parameter,and giving the elastic-plastic matrix D ep.The reasonableness and feasibility of this model are proven by practice.
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