Study on calculation theory of member discrete element for static and dynamic elastoplastic analyses

被引：0

作者：

Xu L.-L. ^{[1
]}

Ye J.-H. ^{[2
,3
]}

机构：

[1] Henan University of Technology, College of Civil Engineering, Zhengzhou

[2] China University of Mining and Technology, Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, Xuzhou

[3] China University of Mining and Technology, Xuzhou Key Laboratory for Fire Safety of Engineering Structures, Xuzhou

来源：

Gongcheng Lixue/Engineering Mechanics | 2021年 / 38卷 / 11期

关键词：

Elastoplastic analysis; Member discrete element method; Refined plastic hinge method; Shaking table test seismic simulation of dome under multi-support excitation; Single-layer reticulated shell structure;

D O I：

10.6052/j.issn.1000-4750.2020.10.0768

中图分类号：

学科分类号：

摘要：

In existing research regarding the Member Discrete Element Method (MDEM), an assume must be satisfied that the tangential spring of contact constitutive model is only used to reflect pure shearing deformation caused by shear force. However, the deformation obtained by the above assume is inconsistent with that caused by shear force according to the bending beam theory. To address this issue, the tangential spring of the contact constitutive model was redefined, and the calculation formula of the tangential contact stiffness coefficient with or without considering shear deformation was systematically derived based on the principle of energy equivalence. On this basis, the refined plastic hinge method of the MDEM was proposed to describe structural plastic development, and the elastic-plastic contact constitutive model between particles was deduced. The static and dynamic elastoplastic behavior analyses of two large-scale reticulated shell structures were carried out by MDEM programming, and the correctness of the contact constitutive model and the applicability of the refined plastic hinge method were verified. It systematizes the basic calculation theory and supplements the elastoplastic theory of the MDEM. A new idea is provided for the static and dynamic analysis of structures. © 2021, Engineering Mechanics Press. All right reserved.

引用

页码：1 / 11

页数：10

共 22 条

[1]

Nie Guibo, Zhi Xudong, Fan Feng, Dai Junwu, Seismic performance evaluation of single-layer reticulated dome and its fragility analysis, Journal of Constructional Steel Research, 100, 9, pp. 176-182, (2014)

[2]

Li W, Zhi X, Wang D, Et al., Static stability analysis of a reticulated shell with a roofing system, Engineering Structures, 185, pp. 315-331, (2019)

[3]

Zhu Z C, Xiang Y, Peng Y Y, Et al., Earthquake-induced collapse of steel latticed shell: Energy criterion implementation and experimental validation, Engineering Structures, 236, (2021)

[4]

Chen Changhong, SAP2000 structural engineering case analysis, (2010)

[5]

Yang Hao, Luo Shuai, Xing Guoran, Wang Wei, Finite element analysis of bar and beam composite strctures, Engineering Mechanics, 36, pp. 154-157, (2019)

[6]

Teh L H, Clarke M J., Plastic-zone analysis of 3D steel frames using beam elements, Journal of Structural Engineering, 125, 11, pp. 1328-1337, (1999)

[7]

Orbison James G, McGuire William, Yield surface applications in nonlinear steel frame analysis, Computer Methods in Applied Mechanics and Engineering, 33, pp. 557-573, (1982)

[8]

Liew J Y R, Chen H, Shanmugam N E, Chen W F., Improved nonlinear plastic hinge analysis of space frame structures, Engineering Structures, 22, 10, pp. 1324-1338, (2000)

[9]

Kim S E, Park M H, Choi S H., Direct design of three-dimensional frames using practical advanced analysis, Engineering Structures, 23, 11, pp. 1491-1502, (2001)

[10]

Wang Xiecheng, Finite element method, (2003)

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