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On design of carbon fiber reinforced plastic (CFRP) laminated structure with different failure criteria
- Source :
- International Journal of Mechanical Sciences. 196:106251
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- This study develops a topology optimization approach for design of carbon fiber reinforced plastic (CFRP) laminated components with different failure criteria to reduce the risk of structural failure. The discrete material and thickness optimization (DMTO) method is adopted to parameterize the design variables of thickness and orientation of CFRP composites, which is driven by the Method of Moving Asymptote (MMA) algorithm. A large number of local constraints associated with the failure criteria are aggregated in terms of a p-norm function. Analytical sensitivities are derived with respect to the design variables. In this study, a battery hanging structure in electrical vehicle (EV) is exemplified; and a DMTO based design is prototyped and validated through the in-house experimental tests first. To prevent different failure modes, the Hashin, Hoffman and Tsai-Wu failure criteria are then imposed as the design constraints together with manufacturing requirements in the optimization. A comparative study is performed for the design with and without such failure criteria. The results demonstrate that the maximum failure index of the optimized structure with the Tsai-Wu failure criterion decreases the most by 40%; and follows by the Hashin and Hoffman criteria by 24% and 33%, respectively. Finally, the CFRP structure is also optimized to design a so-called double-double laminates for demonstrating the generality of the proposed method. The study is anticipated to gain in-depth understanding of how the failure criteria would affect the design of fiber reinforced composite structures to ensure structural integrity.
- Subjects :
- business.industry
Computer science
Mechanical Engineering
Topology optimization
Structure (category theory)
Structural integrity
02 engineering and technology
Function (mathematics)
Structural engineering
Fiber-reinforced composite
Fibre-reinforced plastic
021001 nanoscience & nanotechnology
Condensed Matter Physics
020303 mechanical engineering & transports
0203 mechanical engineering
Mechanics of Materials
Failure index
General Materials Science
Asymptote
0210 nano-technology
business
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 00207403
- Volume :
- 196
- Database :
- OpenAIRE
- Journal :
- International Journal of Mechanical Sciences
- Accession number :
- edsair.doi...........a012d7df9a0c66e7a819892e2a4227f6