![]() ![]() ![]() To illustrate the principle of virtual work, consider the deformable body shown in Figure 8.1. This method was developed in 1717 by John Bernoulli. The virtual work method, also referred to as the method of virtual force or unit-load method, uses the law of conservation of energy to obtain the deflection and slope at a point in a structure. \)ĭeflections of Structures: Work-Energy Methods
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