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A multiscale finite element model for prediction of tensile strength of concrete

Yu, Peng, Ren, Zhaoyong, Chen, Zheng and Bordas, Stéphane Pierre Alain ORCID: 2023. A multiscale finite element model for prediction of tensile strength of concrete. Finite Elements in Analysis and Design 215 , 103877. 10.1016/j.finel.2022.103877

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Concrete is a highly heterogeneous composite material on the microscopic length scale (10−6 m) to the mesoscopic length scale (10−1 m). The heterogeneous structure of concrete influences its macro mechanical properties. The multiscale approach is an effective method to analyze the mechanical properties of composite material and support the design of material. In this paper, a 3D multiscale model for prediction of tensile strength of concrete is presented. The microstructure of Hydrated Cement Paste (HCP) is generated by the HYMOSTURC and exported to the Abaqus by using Python program. The local background grid method is used to directly generate the meso-scale models of mortar and concrete. An uncoupled multiscale method is applied to transfer parameters from a smaller scale to a larger scale model. In the case of scale overlapping, parameter transfer is carried out through a simplified uncoupled averaging method. Finally, the multiscale model is verified by flexural test of mortar and splitting tensile test of concrete.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0168-874X
Date of Acceptance: 7 November 2022
Last Modified: 05 Dec 2022 12:00

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