摘要
由于对混凝土的非线性力学行为具有良好的模拟能力,在损伤力学框架内建立起来的MAZARS本构模型已在相关学术界和工程界得到广泛认可,但以非线性分析能力著称的通用有限元软件ABAQUS平台尚未内置MAZARS本构模型。为此,基于MAZARS本构模型基本理论与ABAQUS提供的用户材料模型接口,给出了基于ABAQUS的MAZARS本构模型数值实现流程,进而通过编制UMAT子程序对MAZARS本构模型进行了二次开发。在此基础上,通过开展混凝土单轴拉伸破坏过程模拟验证了程序开发的正确性,并结合混凝土重力坝、拱坝损伤破坏分析进行了初步应用。
The MAZARS constitutive model proposed in the framework of damage mechanics has been wildly used due to it promising ability to simulate the nonlinear behavior of concrete. However, the MAZARS constitutive model is not available in the famous commercial software platform ABAQUS. With this in mind, the numerical implementation method of MAZARS model in ABAQUS is presented based on its constitutive equations and the user material interface provided by ABAQUS.Afterwards, the secondary development of MAZARS model is accomplished by taking use of the UMAT subroutine. The correctness of numerical implementation is verified through the simulation of the uniaxial tensile fracturing process of concrete,followed by the applications of the developed UMAT subroutine in the damage and failure analysis of concrete gravity dam and arch dam.
作者
韩峰
徐磊
金永苗
王绍洲
崔姗姗
HAN Feng;XU Lei;JIN Yongmiao;WANG Shaozhou;CUI Shanshan(Zhejiang Water Resources and Hydropower Survey and Design Institute,Hangzhou 310002,Zhejiang,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,Jiangsu,China)
出处
《水力发电》
北大核心
2020年第5期85-88,98,共5页
Water Power
基金
国家自然科学基金项目(51979092,U1765204,51739006)。
