Mechanical damage model for concrete based on energy dissipation
Li Zhongyou1 Li Yuanxue2 Yao Zhihua3 Xu Xu1 Wu Yinfeng1
1. 93055 troops of PLA，Shenyang 110021, China; 2. Army Force Logistics University of PLA, Chongqing 401331, China;
3. Air Force Engineering University, Xi’an 400041, China
Abstract：The concrete materials are simplified as a complex model which is composed of elastic-brittle part and ideal elastic-plastic part. Based on the process of deformation failure and energy properties, a damage constitutive model is established. To the elastic-brittle part, two damage variables are put forward based on the different mechanism of energy dissipation aroused by tension and compress stress. Through the principle of conversation of energy, corresponding damage evolution equations are established. The yield strength of ideal elastic-plastic material is described by Mohr-Coulomb criterion. Corresponding computer program is developed by the fast Lagrangian analysis of continual (FLAC3D). The results indicate that this model can reflect the mechanical property.
李忠友 刘元雪 姚志华 徐 旭 武银凤. 基于能量耗散原理的混凝土力学损伤模型[J]. 土木工程学报, 2019, 52(S1): 23-30.
Li Zhongyou Li Yuanxue Yao Zhihua Xu Xu Wu Yinfeng. Mechanical damage model for concrete based on energy dissipation. 土木工程学报, 2019, 52(S1): 23-30.
