Irregular lattice model for geometrically nonlinear dynamics of structures

被引：8
|
作者：
Hwang, Young Kwang [1 ]
Bolander, John E. [2 ]
Hong, Jung-Wuk [1 ]
Lim, Yun Mook [3 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, 291 Daehak Ro, Daejeon 34141, South Korea
[2] Univ Calif Davis, Dept Civil & Environm Engn, One Shields Ave, Davis, CA 95616 USA
[3] Yonsei Univ, Dept Civil & Environm Engn, 50 Yonsei Ro, Seoul 03722, South Korea
来源：
MECHANICS RESEARCH COMMUNICATIONS | 2020年 / 107卷
关键词：
Irregular lattice model; Rigid-body spring network; Geometric nonlinearity; Large rotation; UNIFORM STRAIN HEXAHEDRON; DISCRETE MODELS; TENSILE FAILURE; FRACTURE; CONCRETE; BEAM; SIMULATIONS;
D O I：
10.1016/j.mechrescom.2020.103554
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this study, an irregular lattice model for geometrically nonlinear analysis of structures is proposed. A conventional lattice element formulation, based on the rigid-body-spring concept, is extended to reflect geometric nonlinearity under large displacements. The large rotational behavior of each lattice cell is considered. Along with general derivation of the new lattice element formulation, an explicit solution scheme is implemented for the dynamic analysis of structures. Examples are presented to demonstrate capabilities of the proposed method for solving geometrically nonlinear problems of elastic solids. Benchmark comparisons are made with finite element solutions for both dynamic and quasi-static loading cases. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：9
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