Details
| Original language | English |
|---|---|
| Article number | 108050 |
| Journal | Composites Part B: Engineering |
| Volume | 200 |
| Early online date | 16 May 2020 |
| Publication status | Published - 1 Nov 2020 |
Abstract
Composite materials made of fiber-reinforced plastics (FRPs) used in practice-relevant components are subjected to varying static and cyclic loads during their service life. In general, the loads acting on geometrically complex components generate inhomogeneous stress states, which have different effects on damage initiation and propagation. This contribution focuses on the numerical modeling of the fatigue damage evolution under inhomogeneous stress states using a bending test as an example. Firstly, a Finite-Element (FE) based Fatigue Damage Model (FDM) is extended for predicting the fatigue damage evolution under inhomogeneous stress states. To validate the numerical analysis, a suitable bending device is developed to perform experimental tests. In order to generate a complex and inhomogeneous stress state, the specimens are firmly clamped on both sides. Secondly, experimental investigations and detailed FE simulations of the bending tests are performed at different global stress ratios. Based on the number of load cycles, the deflection evolution of the bending specimens is obtained numerically (employing the FDM) as well as experimentally. Finally, the comparison of simulation results with experiments demonstrates the predictive capability and applicability of the extended FDM as an engineering tool.
Keywords
- A. Polymer-matrix composites (PMCs), B. Fatigue, C. Numerical analysis, D. Mechanical testing
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Composites Part B: Engineering, Vol. 200, 108050, 01.11.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical modeling and experimental validation of fatigue damage in Cross-Ply CFRP composites under inhomogeneous stress states
AU - Brod, M.
AU - Dean, A.
AU - Scheffler, S.
AU - Gerendt, C.
AU - Rolfes, R.
N1 - Funding information: This study was funded by the German Research Foundation (DFG) in the course of project “Evaluation and modelling of the fatigue damage behavior of polymer composites at reversed cyclic loading” (grant number 281870175 ).
PY - 2020/11/1
Y1 - 2020/11/1
N2 - Composite materials made of fiber-reinforced plastics (FRPs) used in practice-relevant components are subjected to varying static and cyclic loads during their service life. In general, the loads acting on geometrically complex components generate inhomogeneous stress states, which have different effects on damage initiation and propagation. This contribution focuses on the numerical modeling of the fatigue damage evolution under inhomogeneous stress states using a bending test as an example. Firstly, a Finite-Element (FE) based Fatigue Damage Model (FDM) is extended for predicting the fatigue damage evolution under inhomogeneous stress states. To validate the numerical analysis, a suitable bending device is developed to perform experimental tests. In order to generate a complex and inhomogeneous stress state, the specimens are firmly clamped on both sides. Secondly, experimental investigations and detailed FE simulations of the bending tests are performed at different global stress ratios. Based on the number of load cycles, the deflection evolution of the bending specimens is obtained numerically (employing the FDM) as well as experimentally. Finally, the comparison of simulation results with experiments demonstrates the predictive capability and applicability of the extended FDM as an engineering tool.
AB - Composite materials made of fiber-reinforced plastics (FRPs) used in practice-relevant components are subjected to varying static and cyclic loads during their service life. In general, the loads acting on geometrically complex components generate inhomogeneous stress states, which have different effects on damage initiation and propagation. This contribution focuses on the numerical modeling of the fatigue damage evolution under inhomogeneous stress states using a bending test as an example. Firstly, a Finite-Element (FE) based Fatigue Damage Model (FDM) is extended for predicting the fatigue damage evolution under inhomogeneous stress states. To validate the numerical analysis, a suitable bending device is developed to perform experimental tests. In order to generate a complex and inhomogeneous stress state, the specimens are firmly clamped on both sides. Secondly, experimental investigations and detailed FE simulations of the bending tests are performed at different global stress ratios. Based on the number of load cycles, the deflection evolution of the bending specimens is obtained numerically (employing the FDM) as well as experimentally. Finally, the comparison of simulation results with experiments demonstrates the predictive capability and applicability of the extended FDM as an engineering tool.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Fatigue
KW - C. Numerical analysis
KW - D. Mechanical testing
UR - http://www.scopus.com/inward/record.url?scp=85089555096&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2020.108050
DO - 10.1016/j.compositesb.2020.108050
M3 - Article
AN - SCOPUS:85089555096
VL - 200
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
SN - 1359-8368
M1 - 108050
ER -