A high performance flexibility-based GBT finite element
A 2-node finite element for the Generalized Beam Theory is developed. Element formulation is based on the hybrid complementary energy functional. Equilibrated stress approximation is derived basing on analytical solutions. Displacements within the element are a posteriori recovered. Displacements and stresses are accurately predicted using very rough meshes.
finite elements generalized beam theory thin-walled beam hybrid stress approach equilibrium