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Who founded the principle of virtual displacement?

Who founded the principle of virtual displacement? Correct Answer Bernoulli

Explanation:

  • Virtual work is the work done by a real force acting through a virtual displacement i.e. Virtual work done by real forces.
  • The initial formulation of the principle of virtual displacement was given by Bernoulli.
  • A virtual displacement is any displacement consistent with the constraints of the structure, i.e., that satisfy the boundary conditions at the supports.
  • A virtual force is any system of forces in equilibrium.
  • The principle of virtual work states, for bodies in equilibrium, for a small arbitrary displacement, the total work done by the system is zero.
  • In this method, the system is displaced through a small amount about a reference point and the work done by all the forces about the reference point is summed to zero to find the unknown reactions if any.
  • The principle of virtual work states that, for a body to be in equilibrium, the virtual work should be zero.

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