Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
SAP2000-MATLAB INTEGRATION FOR NONLINEAR DYNAMIC RESPONSE STRUCTURAL OPTIMIZATION
Submission Author:
Rodrigo Bianchi Santos , RJ
Co-Authors:
Rodrigo Bianchi Santos, Waldy Jair Torres Zuniga, Anderson Pereira
Presenter: Rodrigo Bianchi Santos
doi://10.26678/ABCM.COBEM2019.COB2019-1942
Abstract
Nonlinear phenomena are present in the majority of real-world structural problems. In structural optimization, several difficulties arise when nonlinear relations are considered in the problem formulation. Structural optimization with nonlinearities is challenging in different aspects, e.g. sensitivity analysis and numerous nonlinear analysis that must be evaluated throughout the optimization process. The present work approaches the structural optimization problem using the equivalent static loads (ESL) method. This method solves the nonlinear dynamic response structural optimization problem by performing sequential linear static response optimization sub-problems. SAP2000 software is utilized for nonlinear dynamic finite elements analysis. A MATLAB implementation performs both integration with the OAPI (Open Application Programming Interface) feature of SAP2000 and optimization by using the ESL method. The optimization of a linear truss under dynamic forces is presented as an initial validation of the implementation. The main objective of this work is to develop a robust routine for nonlinear dynamic response structural optimization. The code must be able to efficiently optimize large-scale problems as well.
Keywords
structural optimization, Nonlinear Dynamic Analysis, equivalent static loads, SAP2000, MATLAB
