By Chaohe Che, Guangfan Li, Qizhong Shen, Bifeng Jiang
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Analysis on switch node finite element The solid finite element analysis is conducted for the nodes through Abaqus based on the design value of combined internal force under the function of moderate earthquake. As for the element forms, the concrete and the section steel adopt the C3D8R hexahedral element, while the reinforcement applies T3D2 truss element. When selected the material model, the concrete shall use the elastoplastic damage constitutive model while the steels shall apply the flexibility-linear hardening model.
Different threshold strain produces different parameter value and constitutive model. 85 ε pk fits the experimental curve the best. 2. 2 Comparison between experimental and theoretical constitutive curves Applied Mechanics and Materials Vols. 578-579 27 Finite element analyses According to the theoretical constitutive model, the concrete damaged plasticity model for RPC can be built in ABAQUS. The compressive parameters for concrete damaged plasticity model are as shown in table1, and the corresponding tensile parameters of RPC adopt the suggested curve in ABAQUS verification manual.
The calculated stress-strain curve and deformation of three compression member and three beams is in accordance with the deformation characteristics of experiments, which verified the effectiveness of the proposed concrete damaged plasticity model of RPC. Introduction Reactive Powder Concrete(RPC) is a new type of environmental friendly building material with high strength, high tenacity and high durability. RPC is with broad application prospects in the field of civil engineering, military structure and nuclear industry.
Advances in Civil Structures IV by Chaohe Che, Guangfan Li, Qizhong Shen, Bifeng Jiang