基于GMC准则的岩土材料三维弹塑性本构模型建立及其数值实现  

The Establishment and Numerical Realization of Three-dimensional Elastoplastic Constitutive Model of Geomaterials Based on GMC Criterion

作　　者：田东帅 张梓鸿 胡琦 杨帆[1] 邢立捷 崔仕龙 TIAN Dongshuai;ZHANG Zihong;HU Qi;YANG Fan;XING Lijie;Cui Shilong(College of Urban Construction,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066004,China;China Academy of Railway Sciences Corporation Limited,Beijing,100081,China.)

机构地区：[1]河北科技师范学院城市建设学院,河北秦皇岛066004 [2]中国铁道科学研究院集团有限公司,北京100081

出　　处：《河北科技师范学院学报》2024年第4期22-31,共10页Journal of Hebei Normal University of Science & Technology

基　　金：河北科技师范学院技术服务项目(项目编号:20241039);国家自然科学青年基金项目(项目编号:A2024407001);河北科技师范学院科学研究基金资助(项目编号:2025YB048)。

摘　　要：为了探明岩土材料在一般应力条件下的力学行为,建立了基于Generalized Mohr-Coulomb准则的弹塑性本构模型,并将建立的模型与有限元方法相结合,通过Fortran语言编写了该模型的用户材料子程序(UMAT)。最后,通过算例验证了所编写UMAT子程序的正确性和适用性。该子程序能够用于分析实际工程问题,实现了Generalized Mohr-Coulomb准则在有限元中的应用。An elastoplastic constitutive model was established based on the Generalized Mohr-Coulomb criterion to study the mechanical behavior of geomaterials under general stress conditions,and a user material subroutine(UMAT)was programmed in Fortran with the model and finite element method.The correctness and applicability of the developed UMAT subroutine were verified with examples,which could analyze practical engineering issues in the application of the Generalized Mohr-Coulomb criterion within the finite element framework.

关 键 词：岩土材料 三维弹塑性本构模型 Generalized Mohr-Coulomb准则 

分 类 号：TU452[建筑科学—岩土工程]