Unit 05 VirtualWork

The theorem of virtual work is one of the fundamental pillars of Structural Mechanics. The first ideas on the theorem date to Aristotle. At the end 18th Century, Lagrange published a complete theory on the topic. In a writing of 1921 G. Colonnetti states: With the principle of virtual we are facing a general expression of equilibrium laws, thus, the most general form of the equilibrium laws.