Plastic calculation of slender beam frames systematic method based on mechanism theory

This work focuses on the limit analysis or plastic calculation of slender beam planar frames using a direct method based Virtual Works Principle (VWP). The consists in looking for structure’s collapse mechanism from equilibrium equations posed by means virtual problems displacements. approach, its classic formulation, is very unsystematic and requires convenient choice problems. In this work, it has been possible to systematize structure applying theory mechanisms obtain, fully automatically, necessary completely solve structure. Also, compatibility know accumulated rotations hinges at instant are presented. Finally, search not carried out trial error, but optimization energy criteria.