原文传递
Nonlinear Discrete Homogenized Model for Out-of-Plane Loaded Masonry Walls
| 题名： | Nonlinear Discrete Homogenized Model for Out-of-Plane Loaded Masonry Walls |
| 其他题名： | ABAQUS[Computer software].Dassault Systèmes,Waltham,MA. |
| 正文语种： | 英文 |
| 作者： | Luís C. Silva |
| 关键词： | Masonry;Out-of-plane;Homogenization;Nonlinear;Discrete element model (DEM);Analysis and computation |
| 摘要： | This paper presents a simple and reliable homogenization approach coupled with rigid elements and homogenized interfaces for the analysis of out-of-plane loaded masonry panels. The homogenization approach proposed is a coarse finite element discretization wherein bricks are meshed with a few elastic constant stress triangular elements and joints reduced to interfaces with elastoplastic softening behavior with friction, tension cutoff, and a cap in compression. Flexural behavior is deduced from membrane homogenized stress-strain relationships through thickness integration (Kirchhoff–Love plate hypothesis). The procedure is robust and allows obtaining homogenized bending moment/torque curvature relationships (also in presence of membrane pre-compression) to be used at a structural level within a rigid body and spring mass model (RBSM) implemented in a commercial code. The model relies on rigid quadrilateral elements interconnected by homogenized bending/torque nonlinear springs. The possibility of extending the procedure to a finite element package, with standard built-in solution procedures, allows for a robust reproduction of masonry out-of-plane behavior beyond the peak load, in the presence of global softening. The procedure is tested on a set of windowed and full masonry panels in two-way bending. Excellent agreement is found with both experimental data and previously presented numerical approaches. |
| 出版年： | 2017 |
| 论文唯一标识： | P-26Y2017V143N09023 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001831 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 143 |
| 期： | 09 |
| 页码： | 281-292 |
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