Numerical investigation of the coupled mechanical behavior of self-healing materials under cyclic loading

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:160

Article

Sanz-Herrera, J. A.¹  Aliko-Benitez, A.¹  Fadrique-Contreras, A. M.¹ 

[1] Univ Seville, Sch Engn, Camino Descubrimientos S-N, Seville 41092, Spain

关键词: Self-healing;    Reaction-diffusion equations;    Damage mechanics;    Finite element method;    Computational mechanics;   

DOI  :  10.1016/j.ijsolstr.2018.10.029

来源: Elsevier

【 摘 要 】

Self-healing structural materials are recognized as a cost effective and sustainable promising alternative to traditional maintenance methods of civil infrastructures. Great advances are being evidenced both in the synthesis/manufacturing and experimental characterization of these materials. However, there is limited information about reliable models which theoretically describe the observed behavior to be used as a useful design tool. In this paper a mechano-chemical-diffusive coupled model is introduced to represent the mechanical behavior of self-healing structural materials. Self-healing is restricted to precipitation of products within the matrix via an external agent, and is mathematically written by a set of reaction diffusion equations. Mechanical behavior is modeled following classical continuous irreversible damage mechanics approaches. The overall model is numerically coupled and implemented in a finite element framework. The availability of the model is shown in the investigation of the self-healing mechanical behavior of a beam structure subjected to different regimes of cyclic loading - healing conditions. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free