Accurately and explicitly simulating distinct tensile and compressive behaviors of various concretes with new elastoplasticity model

作     者：Liu, Quan-Pu Kang, Jia Tan, Long-Xu Wang, Si-Yu Bruhns, Otto Xiao, Heng 

作者机构：Jinan Univ Sch Mech & Construct Engn MOE Key Lab Disaster Forecast & Control Engn Guangzhou Peoples R China Ruhr Univ Bochum Inst Mech Fac Civil & Environm Engn Bochum Germany 

出 版 物：《MULTIDISCIPLINE MODELING IN MATERIALS AND STRUCTURES》 (材料与结构的多学科建模)

年 卷 期：2023年第19卷第6期

页      面：1363-1375页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China [12172149, 12172151] Ministry of Science and Technology of China [G20221990122] Jinan University (Guangzhou) 

主　　题：Elastoplastic behavior Concretes Yield strength Hardening and softening Non-symmetric Accurate analysis 

摘      要：Purpose - This paper aims to present a direct analysis to demonstrate why markedly different tensile and compressive behaviors of concretes could not be simulated with the Drucker-Prager yield criterion. Design/methodology/approach - This study proposed an extended form of the latter for establishing a new elastoplasticity model with evolving yield strengths. Findings - Explicit closed-form solutions to non-symmetric tensile and compressive responses of uniaxial specimens at finite strain are for the first time obtained from hardening to softening. Originality/value - With such exact solutions, the yield strengths in tension and compression can be explicitly prescribed by uniaxial tensile and compressive stress-strain functions. Then, the latter two are further provided in explicit forms toward accurately simulating tensile and compressive behaviors. Numerical examples are supplied for meso-scale heterogeneous concrete (MSHC) and high-performance concrete (HPC), etc. Model predictions are in good agreement with test data.