Mesh Size Influence of the Concrete Slab FE Model Exposed to Impact Load for Various Material Models

Transactions of the VSB-Technical University of Ostrava. Civil Engineering Series

article

Daniel Jindra,¹  Petr Hradil,¹  Jiri Kala,¹  Petr Kral¹ 

[1] Institute of Structural Mechanics, Faculty of Civil Engineering, Brno University of Technology;Faculty of Civil Engineering, VSB – Technical University of Ostrava

关键词: Blast load;    continuous surface cap material model;    Schwer Murray cap model;    Johnson-Holmquist-Cookmodel;    discretization;    explicit analysis;    numericalnonlinear analysis;    reinforced concrete slab.;   

DOI  :  10.35181/tces-2020-0010

来源: Walter de Gruyter GmbH

【 摘 要 】

This paper presents the use of a finite element method (FEM) to analyze the negative shear lag effect on prestressed continuous double T beam. However, the numerical method can be applied to i) any cross-section, ii). the most common types of supports, such as fixed, pinned, roller, iii) and any applied load, concentrated, or distributed passed through the shear center of the cross-section. The characteristics of the cross-section are firstly derived from 2D FEM, which uses a 9-node isoparametric element. Then, a 1D FEM, which uses a linear isoparametric element, is developed to compute the deflection, rotation angle, bending warping parameter, and stress resultants. Finally, the stress field is obtained from the local analysis on the 2D-cross section. A MATLAB program is executed to validate the numerical method.

【 授权许可】

Unknown