TY - JOUR JF - mdrsjrns JO - Modares Mechanical Engineering VL - 12 IS - 2 PY - 2012 Y1 - 2012/6/01 TI - Vibroacoustical Optimzation of Mechanical Structures Using Geometry Modification Concepte and Genetic Algorithm Method TT - بهینه سازی ویبرو آکوستیکی سازه های مکانیکی با استفاده از روش تغییر فرم هندسی و الگوریتم ژنتیک N2 - This paper introduces a new approach for the reduction of sound radiation from the mechanical structures. A combination of genetic algorithm method and geometry modification concept minimizes the root mean square level of structure borne sound for a square plate over a specific frequency range. The structure’s local geometry modification values at the selected surface key-points considered as design variables. The model is under three non-symmetric harmonic excitations. An iterative approach is used to develop new modified model until when a termination criterium is rached. The results show that this approach could produce significant reduction in the value of radiated sound power level of the structure. SP - 134 EP - 143 AU - Ranjbar, Mostafa AU - Marburg, Steffen AD - Assistant Professor, Department of Mechanical Engineering, Pardis Branch, Islamic Azad University,Pardis, Iran KW - optimization KW - vibroacoustic KW - genetic algorithm KW - Rectangular Plate UR - http://mme.modares.ac.ir/article-15-7985-en.html ER -