Energy methods for finding deflections. Elastic strain energy . Lecture 8 External work. Lecture 9 Strain energy in Hookean bars . Strain energy and complementary energy of non-Hookean elastic materials.
Bars have linear stress-strain properties.
Find deflection of connecting pin. The member strain-joint displacement relations for the bars are nonlinear. Find joint displacements due to joint loads by Castigliano's first theorem and the Crotti-Engesser theorem. Quadratic forms of strain energy in terms of displacements and loads. Find corresponding deflections.