Cálculo automático de estruturas reticuladas

Abstract

This work presents an automatic treatment by means of the Matrix Stiffness Method applied to planes frames and space frame structures. A computational code was developed and implementation, using Fortran. Subroutines were developed to solve plane trusses, space trusses, plane frames, space frames and grids. The results are expressed by the values of the nodal displacements, the support reactions and nodal internal forces in each frame. In plane frame, the elements might have hinges (rotation liberation) on its initial and/or final nodes. Examples are considered in order to verify the efficiency of the numerical approach proposed for frames structures, by comparing the present approach results with those obtained by the validated academic programs (Ftool and Salt) and analytical solutions. The results testify the efficiency of the developed computational code, that presented almost the same results of nodal displacements, the support reactions and nodal internal forces in each frame of the comparison parameters.