Sadaf, S.M. F. TabassumA. SanaN. A. ShahidN. A. ChaudhryM. Saeed2016-10-042016-10-042015Sadaf, S., Tabassum, M., Sana, A., Shahid, N., Chaudhry, N., & Saeed, M. (2015). Minimization of two bar bracket optimization problem through derivative free methods. Science International, 27(6), 6153-6156.https://escholar.umt.edu.pk/handle/123456789/1998The purpose of this exploration is to construct optimization models of two bar bracket alongside stress constraints. The derivative free methods Nelder-Meed Method, Hooke-Jeeve Method and Multidirectional Search Methods are used to solve model. Penalty functions are used to eliminate constraints. Then constrained optimization model is changed into unconstrained model. Finally discuss the comparison and efficiency of these methods through MATLAB Programming.derivative free methodspenalty functionunconstrained optimizationstructural optimization problemArticle