TY - JOUR ID - 51516 TI - The Comparison of Direct and Indirect Optimization Techniques in Equilibrium Analysis of Multibody Dynamic Systems JO - Journal of Aerospace Science and Technology JA - JAST LA - en SN - 1735-2134 AU - Haddad Pour, Hassan AD - Sharif Y1 - 2006 PY - 2006 VL - 3 IS - 2 SP - 105 EP - 111 KW - static-equilibrium KW - multibody mechanical systems KW - constrained optimization KW - Dynamic DO - N2 - The present paper describes a set of procedures for the solution of nonlinear static-equilibrium problems in the complex multibody mechanical systems. To find the equilibrium position of the system, five optimization techniques are used to minimize the total potential energy of the system. Comparisons are made between these techniques. A computer program is developed to evaluate the equality constraints and objective function of a general multi-body dynamic system in order to find the equilibrium condition. The obtained results from different approaches are compared together and finally some conclusions are made considering the existing results of the artificial damping method. It is seen that the indirect methods may produce more accurate results with faster convergence. UR - https://jast.ias.ir/article_51516.html L1 - https://jast.ias.ir/article_51516_b90be75d9fe158dcd1331d1528cea591.pdf ER -