Details
| Original language | English |
|---|---|
| Number of pages | 11 |
| Publication status | Published - 15 Jul 2018 |
| Externally published | Yes |
Publication series
| Name | Lecture Notes in Mechanical Engineering |
|---|---|
| ISSN (Print) | 2195-4356 |
| ISSN (electronic) | 2195-4364 |
Abstract
Epoxy polymers are highly crosslinked polymers that result in brittle fracture. Adding rigid fillers to the bulk epoxy can lead to tougher composites. This study present comprehensive sensitivity analysis in order to determine the key input parameters for fracture toughness of particle/polymer nanocomposites. Within the framework of Extended Finite Element Method (XFEM), the cohesive segments method and phantom nodes have been exploited to model numerically the fracture and crack propagation based on 2D finite element model. Four common global sensitivity analysis methods are applied: (1) regression method, (2) elementary effects of Morris (MOAT), (3) Sobol’/Saltelli method, and (4) Extended fourier amplitude sensitivity test (EFAST). The results indicated that the maximum allowable principal stress and Young’s modulus of the epoxy matrix were the most two significant parameters. Besides, the size of the nanoparicles showed weighty interaction effect. The achievement of this study is of value for a better understanding of fracture mechanism in polymer nanocomposites that provides a sufficient support for the further exploration.
Keywords
- Fracture mechanic, Polymer nanocomposites, Sensitivity analysis
ASJC Scopus subject areas
- Engineering(all)
- Automotive Engineering
- Engineering(all)
- Aerospace Engineering
- Engineering(all)
- Mechanical Engineering
- Chemical Engineering(all)
- Fluid Flow and Transfer Processes
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11 p. 2018. (Lecture Notes in Mechanical Engineering).
Research output: Other contribution › Other publication › Research › peer review
}
TY - GEN
T1 - Key Parameters for Fracture Toughness of Particle/Polymer Nanocomposites; Sensitivity Analysis via XFEM Modeling Approach
AU - Hamdia, Khader M.
AU - Rabczuk, Timon
N1 - Publisher Copyright: © Springer Nature Singapore Pte Ltd. 2019.
PY - 2018/7/15
Y1 - 2018/7/15
N2 - Epoxy polymers are highly crosslinked polymers that result in brittle fracture. Adding rigid fillers to the bulk epoxy can lead to tougher composites. This study present comprehensive sensitivity analysis in order to determine the key input parameters for fracture toughness of particle/polymer nanocomposites. Within the framework of Extended Finite Element Method (XFEM), the cohesive segments method and phantom nodes have been exploited to model numerically the fracture and crack propagation based on 2D finite element model. Four common global sensitivity analysis methods are applied: (1) regression method, (2) elementary effects of Morris (MOAT), (3) Sobol’/Saltelli method, and (4) Extended fourier amplitude sensitivity test (EFAST). The results indicated that the maximum allowable principal stress and Young’s modulus of the epoxy matrix were the most two significant parameters. Besides, the size of the nanoparicles showed weighty interaction effect. The achievement of this study is of value for a better understanding of fracture mechanism in polymer nanocomposites that provides a sufficient support for the further exploration.
AB - Epoxy polymers are highly crosslinked polymers that result in brittle fracture. Adding rigid fillers to the bulk epoxy can lead to tougher composites. This study present comprehensive sensitivity analysis in order to determine the key input parameters for fracture toughness of particle/polymer nanocomposites. Within the framework of Extended Finite Element Method (XFEM), the cohesive segments method and phantom nodes have been exploited to model numerically the fracture and crack propagation based on 2D finite element model. Four common global sensitivity analysis methods are applied: (1) regression method, (2) elementary effects of Morris (MOAT), (3) Sobol’/Saltelli method, and (4) Extended fourier amplitude sensitivity test (EFAST). The results indicated that the maximum allowable principal stress and Young’s modulus of the epoxy matrix were the most two significant parameters. Besides, the size of the nanoparicles showed weighty interaction effect. The achievement of this study is of value for a better understanding of fracture mechanism in polymer nanocomposites that provides a sufficient support for the further exploration.
KW - Fracture mechanic
KW - Polymer nanocomposites
KW - Sensitivity analysis
UR - http://www.scopus.com/inward/record.url?scp=85068399985&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-0411-8_4
DO - 10.1007/978-981-13-0411-8_4
M3 - Other publication
SN - 9789811304101
T3 - Lecture Notes in Mechanical Engineering
ER -