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A review of flexibility-based finite element method for beam-column elements

Journal of Harbin Institute of Technology(New Series) 2009年第1期16卷 81-86页

作者：李爽翟长海谢礼立 School of Civil Engineering Harbin Institute of Technology Institute of Engineering Mechanics China Earthquake Administration

For material nonlinear problem,elements derived with the flexibility-based method are more accurate than classical elements derived with the stiffness-based method. A review of the current state of the art of the flexibility-based finite element method is provided to enhance the robustness of structure analysis. The research on beam-column elements is the mainstream in the research on flexibility-based finite element method at present. The original development of flexibility-based finite element method is reviewed, and the further development of this method is then presented in several specific aspects, such as geometrically nonlinear analysis and dynamic analysis. The further research needed to be carried out in the future is finally discussed.

关键词： flexibility-based finite element beam-column element material geometrically dynamic analysis

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Damage evaluation of reinforced concrete frame based on a combined fiber beam model

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Science China(Physics,Mechanics & Astronomy) 2014年第4期57卷 723-730页

作者： SHANG Bing LIU ZhanLi ZHUANG Zhuo Applied Mechanics Lab School of Aerospace Tsinghua University

In order to analyze and simulate the impact collapse or seismic response of the reinforced concrete(RC)structures,a combined fiber beam model is proposed by dividing the cross section of RC beam into concrete fiber and steel *** stress-strain relationship of concrete fiber is based on a model proposed by concrete codes for concrete *** stress-strain behavior of steel fiber is based on a model suggested by *** constitutive models are implemented into a general finite element program ABAQUS through the user defined subroutines to provide effective computational tools for the inelastic analysis of RC frame *** fiber model proposed in this paper is validated by comparing with experiment data of the RC column under cyclical lateral *** damage evolution of a three-dimension frame subjected to impact loading is also investigated.

关键词： RC frame structure fiber model beam-column element dynamic response impact

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