本文从非关联流动理论出发,导出了适用于混凝土、岩石等材料的弹塑性各向异性损伤介质的增量形式的有限元本构关系。在推导中并不局限于某类具体材料,因此是一个普遍的关系。最后,以混凝土三点弯曲梁为例进行了计算,结果和实验曲线极为吻合。 Based on the non-associated flow theory, this paper deduces the incremental form of finite element constitutive relations of elasto-plastic anisotropic damage media suitable for concrete, rock and other materials. In the derivation is not limited to a specific type of material, it is a universal relationship. Finally, taking the concrete three-point bending beam as an example, the result is in good agreement with the experimental curve.