About this Abstract |
Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Presentation Title |
Response Surface Based Thermo-mechanical Material Property Search Approach To Avoid Matrix Cracking in CFRP Pressure Vessels |
Author(s) |
Recep Ufuk, Arif Karabeyoğlu, Melih Papila, Kaan Bilge |
On-Site Speaker (Planned) |
Recep Ufuk |
Abstract Scope |
This work employs response surface methodology (RSM) as the governing scheme of a parametric multi-scaled FEA modeling effort to create surrogate models that estimate average von-mises stress on matrix phase in any given vessel configuration operating under different temperatures. To achieve that, a 3^5 full-factorial design of experiment framework with 243 design points is formed. 5 material variables are chosen as i) Fiber Longitudinal Modulus (E1f), ii) Fiber Transverse Modulus (E2f), iii) Resin modulus (Em) iv) Fiber thermal expansion coefficient (αf) and v) Resin thermal expansion coefficient (αm). These properties are evaluated at three levels, minimum, mean, and maximum, determined by a large product database scanning. Six unit mechanical and one unit thermal loadings are performed on periodically boundary-conditioned RVEs created using these properties to implement a trans-scale modeling approach. The approach enabled the linking of micro-stress components at the Gaussian integration points with given or modeled macro-strain at the macro-scale. As an example, classical 0,90,+45,-45 quad laminate under cryogenic loading has been used for macro strains. As a result of 6804 different modeling cases, surrogate models take material properties as variables and micro-stress components as the responses are then extracted. These models are used as mathematical functions to determine common material properties (intersection of different response surfaces for different ply angles) that would satisfy a Von- Mises stress failure criterion for the matrix phase safety factor of 1 in each ply. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |