This lesson covers the classical lamination theory for analyzing Fiber-Reinforced Plastic (FRP) laminated plates. It delves into the assumptions made in terms of displacement field, strain displacement relationship, and stress-strain relationship. The lesson explains how stresses are represented in terms of force and moment resultant, and how these are calculated for each layer of the laminate. It also discusses the concept of statically equivalent systems and how to apply the stress-strain relationship. The lesson concludes with the correlation of forces with mid-surface strains and curvatures in terms of A, B, and D matrices.
01:16 - Representation of stresses in terms of force and moment resultant
09:00 - Concept of statically equivalent systems
17:07 - Application of stress-strain relationship
33:24 - Discussion on Moment resultant
46:19 - Correlation of forces with mid-surface strains and curvatures
- Classical lamination theory is a crucial tool for analyzing FRP laminated plates.
- The theory makes certain assumptions regarding displacement field, strain displacement relationship, and stress-strain relationship.
- Stresses in each layer of the laminate are represented in terms of force and moment resultant.
- The concept of statically equivalent systems is used to represent the stresses in the laminate.
- The stress-strain relationship is applied to the statically equivalent system to derive the mid-surface strains and curvatures.
- The forces can be correlated with the mid-surface strains and curvatures using A, B, and D matrices.