Conference proceeding
Multiscale Modeling of Carbon Fiber Reinforced Composites with a Cohesive Interface Model
AIAA SCITECH 2023 FORUM
01 Jan 2023
Abstract
Interface modeling is a critical aspect in any multi-material system modeling. Previous studies show how a small change in the interface model has a significant effect on the micro-, meso- and macroscale modeling results. Here, to model carbon fiber reinforced epoxy composites, we propose a local, high fidelity cohesive zone model in a non-local continuum framework. Peridynamics, whose governing equations are advantageous for treating singularities, is used to solve the problem. The behavior of the interfacial particles is governed by different tangential and normal traction-displacement laws which are selected to be bilinear. A hierarchical multiscale framework is employed, where information from all the RVEs in the subscale is passed to the next scale for independent off-line simulations. A rectangular and a circular hexagonal RVE with a cohesive interface between the fiber and epoxy is simulated in a displacement-controlled tension test. A comparison with other interface models showes that the cohesive model gives satisfying results for mechanical and damage properties for the cases with hexagonal RVEs. Then, a set of computationally generated RVEs with randomly oriented fibers with random curvature is simulated in the microscale. The effective mechanical and damage properties obtained from these simulations are passed to the mesoscale for one set of energetic RVE simulations. The effects of different interface models on material strength, stiffness and damage behavior at the mesocscale are revealed and clarified.
Metrics
1 Record Views
Details
- Title
- Multiscale Modeling of Carbon Fiber Reinforced Composites with a Cohesive Interface Model
- Creators
- Neslihan Genckal - Virginia TechGary D. Seidel - Virginia TechShengfeng Cheng - Virginia TechAIAA
- Publication Details
- AIAA SCITECH 2023 FORUM
- Publisher
- Amer Inst Aeronautics & Astronautics
- Number of pages
- 16
- Grant note
- FA9550-18-1-0433; FA9550-21-1-0431 / Air Force Office of Scientific Research; United States Department of Defense; Air Force Office of Scientific Research (AFOSR)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:001328671202023
- Scopus ID
- 2-s2.0-85199016764
- Other Identifier
- 991022157471104721