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论文类型：期刊论文

发表时间：2022-06-28

发表刊物：计算机应用

所属单位：建设工程学部

期号：z2

页面范围：305-307,318

ISSN号：1001-9081

摘要：Focusing on the issue that the convergence difficulty phenomenon appears frequently during the process of nonlinear mechanics analysis by ANSYS, an equivalent-damage element model which can give consideration to the composite damage was proposed. The model utilized simple constitutive relation and damage evolution model for concrete. Based on the dynamic nonlinear iteration technique in the form of increment which can improve the nonlinear convergence. Furthermore, User Programmable Feature ( UPF) was exploited as the redevelopment tool in order to embed model in ANSYS. According to the analysis results, the error was less than 5% under the static condition and 12. 3% under the dynamic condition. Finally, the complete damage elements could be“unselected” in order to simulate the damage behavior of structure during post-processing. The accuracy and reliability of the algorithm can meet demand, meanwhile, the weakness part can be displayed visually.

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