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CE5720 Stability of Structures Home Work # 1
1. Derive an expression for the small deflection bifurcation load in terms of EI/L2.
2. Determine the critical load of this planar structural system. Hint: The flexible
beam provides a rotational and translational spring to the rigid bar compression member.
3. Determine the critical load of this planar structural system. Hint: The flexible
beam provides a rotational and translational spring to the rigid bar compression member.
4. In the mechanism a weightless infinitely stiff bar is pinned at the point shown. The load P remains vertical during deformation. The weight W does not change during buckling. The spring is unstretched when the bar is vertical. The system is disturbed by a moment Mo at the pin.
a. Determine the critical load P according to small deflection theory.
b. Calculate and plot the equilibrium path p for θ0 = 0 and
c. Investigate the stability of the equilibrium
path. Discuss the problem