Evolution and stability of tile detachment - Experiments and modeling

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:210

Article

Feldfogel, Shai¹  Rabinovitch, Oded² 

[1] Swiss Fed Inst Technol, Inst Buidling Mat, HIF E 28-2,Stefano Franscini Pl 3, CH-8093 Zurich, Switzerland

[2] Fac Civil & Environm Engn, Technion Israel Inst Technol, Abel Wolman Chair Civil Engn, IL-3200003 Haifa, Israel

关键词: Tile detachment;    Adhesively bonded tiles;    Interface debonding;    Unstable debonding;    Cohesive interfaces;    Finite element analysis;   

DOI  :  10.1016/j.ijsolstr.2020.11.001

来源: Elsevier

【 摘 要 】

Detachment of bonded tiles undermines the aesthetics, functionality, and safety of innumerable buildings world-wide. The plate-type interfacial debonding mechanisms that are the root cause of tile detachments are difficult to observe and monitor because they are hidden by opaque external layers. This invisibility, together with the brittle nature of tile detachments, raises questions regarding the triggering, the two-dimensional evolution, and the stability features of the interfacial failure. The present study adopts a combined experimental-numerical approach to address these questions. Through the use of transparent tiles, the full process of tile detachments under a concentrated pullout load is novelly captured on video. The experimental force displacement curves reveal that the interfacial mechanism becomes unstable at critical points. Numerical modeling based on an inhouse specially tailored finite element formulation is used to further explore and interpret the experimental findings. Comparisons between the experimental and numerical results show the numerical model's ability to closely follow the debonding evolution and capture the variety of experimentally observed phenomena. (C) 2020 Elsevier Ltd. All rights reserved.

【 授权许可】

Free