Virtual Work in Structural Mechanics

This lecture covers the concept of virtual work in structural mechanics, focusing on stability of equilibrium states, criteria for stability, and the principle of superposition. It also discusses the calculation of reaction loads in various systems, such as mobile systems and connectors. The lecture explores examples of determining support reactions using virtual work, emphasizing the importance of understanding equilibrium conditions and kinematics. Additionally, it delves into the stability analysis of mechanical systems containing springs, highlighting the significance of potential energy and the evaluation of stability based on potential energy changes. The lecture concludes with a discussion on the stability of equilibrium positions and the types of stability in structural mechanics.