Access to bifurcated and isolated equilibrium branches of structures

To gain access to bifurcated and isolated equilibrium branches of elastic nonlinear structures, a particular curve is introduced on a fixed- loading plane such that the intersections between the introduced constraint plane and the equilibrium path are all on this particular curve. A line search in tangent direction of the curve or tracing of the curve will be executed to attain post-critical and isolated branches of the equilibrium. Bifurcation of a simple truss and isolated solution branches of an elastica are computed.