| 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 |
Stochastic Non-Linear Buckling Analysis of Variable Angle Tow Composites |
| Author(s) |
Mishal Thapa, Sameer B. Mulani, Subham Gupta, Vijay K. Goyal |
| On-Site Speaker (Planned) |
Sameer B. Mulani |
| Abstract Scope |
Variable angle tow laminates (VATs) have gained huge interest in engineering due to their ability to tailor mechanical properties and yield composites with enhanced performance compared to their straight fiber counterparts. However, VATs are challenging to manufacture to their exact design specifications due to the complexities involved during manufacturing. As a result, various uncertainties are introduced, such as deviation from the exact fiber path, geometric imperfections, manufacturing defects, and material properties. Therefore, these uncertainties should be considered during the design to minimize their impact on their performance, such as buckling load. Although most studies have focused on linear buckling analysis for VATs, the non-linear buckling of VATs with uncertainties has yet to be studied extensively. Hence, this study deals with the uncertainty quantification (UQ) of the non-linear buckling performance of a VAT laminate with a hole. The randomness in fiber path deviation is modeled using uncertainties in the control points of B-splines. The randomness in material properties and thickness of the plies are also considered. An efficient approach for UQ, known as sparse polynomial chaos expansion, is used to efficiently quantify the uncertainties' effects on the non-linear buckling load. The findings of this study will help to understand the effects of uncertainties on the non-linear buckling load of the VAT laminates and will
complement the advancement of the VAT for engineering applications. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |