Details
| Original language | English |
|---|---|
| Article number | 109789 |
| Number of pages | 17 |
| Journal | Engineering fracture mechanics |
| Volume | 295 |
| Early online date | 9 Dec 2023 |
| Publication status | Published - 23 Jan 2024 |
Abstract
In the scope of developing a bonded iron-based shape memory alloy (Fe-SMA) strengthening solution, nonlinear deformation in the adherends upon joint failure due to phase transformation and high adhesive toughness is unavoidable. The effect of this nonlinear deformation has not been studied in the case of Mode I failure. In this study, the first experimental and theoretical investigation on Mode I failure of Fe-SMA bonded joints is presented. A new analytical model is proposed and validated using experimental results to gain an in-depth understanding of the influence of Fe-SMA nonlinear material deformation on the joint failure process. The proposed model is shown to be significantly faster than traditional elasto-plastic finite elements using cohesive zone modeling with a minimum compromise to the accuracy. These are observed to result in lower bond strength and a shorter fracture process zone than that of linear elastic adherends using the same adhesive. Neglecting the nonlinear behavior of the Fe-SMA bonded joints can lead to an unconservative joint design, jeopardizing safety. The developed model is aimed at facilitating the development of adhesively bonded Fe-SMA strengthening systems.
Keywords
- Cohesive zone modeling, Debonding, Fracture mechanics, Shape memory alloys, Steel
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Engineering fracture mechanics, Vol. 295, 109789, 23.01.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mode I fracture analysis of Fe-SMA bonded double cantilever beam considering nonlinear behavior of the adherends
AU - Pichler, Niels
AU - Wang, Wandong
AU - Motavalli, Masoud
AU - Taras, Andreas
AU - Ghafoori, Elyas
N1 - Funding Information: The authors would like to acknowledge the financial support of the Swiss National Science Foundation, SNSF (Grant No. 200021_192238 ), and re-fer AG for providing the material used for this work.
PY - 2024/1/23
Y1 - 2024/1/23
N2 - In the scope of developing a bonded iron-based shape memory alloy (Fe-SMA) strengthening solution, nonlinear deformation in the adherends upon joint failure due to phase transformation and high adhesive toughness is unavoidable. The effect of this nonlinear deformation has not been studied in the case of Mode I failure. In this study, the first experimental and theoretical investigation on Mode I failure of Fe-SMA bonded joints is presented. A new analytical model is proposed and validated using experimental results to gain an in-depth understanding of the influence of Fe-SMA nonlinear material deformation on the joint failure process. The proposed model is shown to be significantly faster than traditional elasto-plastic finite elements using cohesive zone modeling with a minimum compromise to the accuracy. These are observed to result in lower bond strength and a shorter fracture process zone than that of linear elastic adherends using the same adhesive. Neglecting the nonlinear behavior of the Fe-SMA bonded joints can lead to an unconservative joint design, jeopardizing safety. The developed model is aimed at facilitating the development of adhesively bonded Fe-SMA strengthening systems.
AB - In the scope of developing a bonded iron-based shape memory alloy (Fe-SMA) strengthening solution, nonlinear deformation in the adherends upon joint failure due to phase transformation and high adhesive toughness is unavoidable. The effect of this nonlinear deformation has not been studied in the case of Mode I failure. In this study, the first experimental and theoretical investigation on Mode I failure of Fe-SMA bonded joints is presented. A new analytical model is proposed and validated using experimental results to gain an in-depth understanding of the influence of Fe-SMA nonlinear material deformation on the joint failure process. The proposed model is shown to be significantly faster than traditional elasto-plastic finite elements using cohesive zone modeling with a minimum compromise to the accuracy. These are observed to result in lower bond strength and a shorter fracture process zone than that of linear elastic adherends using the same adhesive. Neglecting the nonlinear behavior of the Fe-SMA bonded joints can lead to an unconservative joint design, jeopardizing safety. The developed model is aimed at facilitating the development of adhesively bonded Fe-SMA strengthening systems.
KW - Cohesive zone modeling
KW - Debonding
KW - Fracture mechanics
KW - Shape memory alloys
KW - Steel
UR - http://www.scopus.com/inward/record.url?scp=85179761082&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2023.109789
DO - 10.1016/j.engfracmech.2023.109789
M3 - Article
AN - SCOPUS:85179761082
VL - 295
JO - Engineering fracture mechanics
JF - Engineering fracture mechanics
SN - 0013-7944
M1 - 109789
ER -