Details
| Original language | English |
|---|---|
| Article number | 111368 |
| Journal | Composite structures |
| Volume | 229 |
| Early online date | 12 Sept 2019 |
| Publication status | Published - 1 Dec 2019 |
Abstract
The joint efficiency of mechanical joints in fiber-reinforced composite materials can be increased significantly by embedding metal plies in the composite layup, as in the case of fiber metal laminates. In this work, a novel finite element-based framework is presented for predicting the static progressive failure behavior of fiber metal laminate bolted joints. Motivated from experimental observations, the proposed framework accounts not only for damage in the fiber-reinforced composite plies, but also for different types of damage of the metallic inlays. For this purpose, user-defined continuum-damage constitutive models are formulated and employed in the general-purpose FE software Abaqus/Implicit for the fiber-reinforced polymer plies and the embedded metallic inlays. Accordingly, the interaction between different failure modes and the influence of the bolt's washer on the damage evolution is considered to increase the predictive quality. To demonstrate the applicability and validity of the developments, predictive simulations are carried out and compared to conducted experimental measurements on different fiber metal laminate grades (GFRP/stainless steel and CFRP/titanium) with a wide range of metal volume content, reaching from 0% (pure composite material) to 50%.
Keywords
- Bolted joints, Continuum damage modeling, Experimental validation, Fiber metal laminates, Static progressive failure prediction
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Engineering(all)
- Civil and Structural Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Composite structures, Vol. 229, 111368, 01.12.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the progressive failure simulation and experimental validation of fiber metal laminate bolted joints
AU - Gerendt, Christian
AU - Dean, Aamir
AU - Mahrholz, Thorsten
AU - Rolfes, Raimund
N1 - Funding Information: The work presented in this paper was funded by the Federal Ministry of Education and Research of the Federal Republic of Germany under the project LENAH – Hybrid laminates and nanoparticle reinforced materials for improved rotor blade structures (Grant No. 03SF0529A). More explicitly the author would like to thank the project partners from the German Aerospace Center (DLR), namely the Institute of Composite Structures and Adaptive Systems, as well as the partners from the Fraunhofer Society, namely the Institute for Wind Energy Systems (IWES). They laid the foundation for this work by supporting us with material data, manufacturing the FML plates and corresponding test samples for performing the static bolt bearing tests according to up-to-date test standards (see [31]) used for model validation.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The joint efficiency of mechanical joints in fiber-reinforced composite materials can be increased significantly by embedding metal plies in the composite layup, as in the case of fiber metal laminates. In this work, a novel finite element-based framework is presented for predicting the static progressive failure behavior of fiber metal laminate bolted joints. Motivated from experimental observations, the proposed framework accounts not only for damage in the fiber-reinforced composite plies, but also for different types of damage of the metallic inlays. For this purpose, user-defined continuum-damage constitutive models are formulated and employed in the general-purpose FE software Abaqus/Implicit for the fiber-reinforced polymer plies and the embedded metallic inlays. Accordingly, the interaction between different failure modes and the influence of the bolt's washer on the damage evolution is considered to increase the predictive quality. To demonstrate the applicability and validity of the developments, predictive simulations are carried out and compared to conducted experimental measurements on different fiber metal laminate grades (GFRP/stainless steel and CFRP/titanium) with a wide range of metal volume content, reaching from 0% (pure composite material) to 50%.
AB - The joint efficiency of mechanical joints in fiber-reinforced composite materials can be increased significantly by embedding metal plies in the composite layup, as in the case of fiber metal laminates. In this work, a novel finite element-based framework is presented for predicting the static progressive failure behavior of fiber metal laminate bolted joints. Motivated from experimental observations, the proposed framework accounts not only for damage in the fiber-reinforced composite plies, but also for different types of damage of the metallic inlays. For this purpose, user-defined continuum-damage constitutive models are formulated and employed in the general-purpose FE software Abaqus/Implicit for the fiber-reinforced polymer plies and the embedded metallic inlays. Accordingly, the interaction between different failure modes and the influence of the bolt's washer on the damage evolution is considered to increase the predictive quality. To demonstrate the applicability and validity of the developments, predictive simulations are carried out and compared to conducted experimental measurements on different fiber metal laminate grades (GFRP/stainless steel and CFRP/titanium) with a wide range of metal volume content, reaching from 0% (pure composite material) to 50%.
KW - Bolted joints
KW - Continuum damage modeling
KW - Experimental validation
KW - Fiber metal laminates
KW - Static progressive failure prediction
UR - http://www.scopus.com/inward/record.url?scp=85072557538&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2019.111368
DO - 10.1016/j.compstruct.2019.111368
M3 - Article
AN - SCOPUS:85072557538
VL - 229
JO - Composite structures
JF - Composite structures
SN - 0263-8223
M1 - 111368
ER -