Buckling and Free Vibration of Laminates — Lesson 2

This lesson covers the concepts of buckling and vibration in laminates. It delves into the factors that influence buckling load and natural frequencies in laminates, and how these can be manipulated through design. The lesson also explains how to calculate the fundamental natural frequencies for different laminates using classical lamination theory. It further discusses the importance of understanding these concepts when designing components made of fiber-reinforced polymer composites. The lesson uses the example of a rectangular laminated plate with symmetric and special orthotropic laminates to illustrate these concepts.

Video Highlights

02:30 - Discussion on the factors influencing buckling load
03:36 - Explanation of how to calculate fundamental natural frequencies
07:00 - Use of classical lamination theory in calculations
18:18 - Example of a rectangular laminated plate
28:14 - Transverse vibration of laminated plate
29:37 - Free vibration of laminated plate

Key Takeaways

- Buckling load and natural frequencies in laminates are influenced by various factors, including the stacking sequence of the laminate and the properties of the constituent lamina.
- The fundamental natural frequencies for different laminates can be calculated using classical lamination theory.
- Understanding these concepts is crucial when designing components made of fiber-reinforced polymer composites.
- The lesson uses the example of a rectangular laminated plate with symmetric and special orthotropic laminates to illustrate these concepts.