A testing preocedure for the evaluation of directional mesh bias

A testing preocedure for the evaluation of directional mesh bias

Slobbe, A.T.
Hendriks, M.A.N.
Rots, J.G.

Civil Engineering and Geosciences

Structural Engineering

2013-03-10

This paper presents a dedicated numerical test that enables to assess the directional mesh bias of constitutive models in a systematic way. The test makes use of periodic boundary conditions, by which strain localization can be analyzed for different mesh alignments with preservation of mesh uniformity and with exclusion of boundary disturbances. After an exploratory study of the proposed test, the test is demonstrated by applying it to the classical and still widely used crack band model. An analysis series is performed on five meshes with different alignments. The meshes consist of squared quadrilateral elements with varying interpolation function and numerical integration scheme. From the results it can be concluded that the test identifies a significant mesh-induced directional bias.

directional mesh bias
concrete
fracture
finite elements
crack band model

http://resolver.tudelft.nl/uuid:f421fecf-205e-45d3-8e3b-c07c8e0ace64

International Center for Numerical Methods in Engineering

978-84-941004-0-6

FraMCos-8: Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, Toledo, Spain, 10-14 March 2013

Institutional Repository

conference paper

(c) 2013 The Author(s)