eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2016-12-17 4 7 357 362 10.12691/ajme-4-7-22 AJME20164722 article Possibilities of Optimizing the Shape and Geometry of Castellated Beams Using Numerical and Experimental Modeling Miroslav Pástor 1 Jozef Bocko 1 Tomáš Kula tomas.kula@tuke.sk 1 Cosmin-Stefan Roszkos 1 Department of Applied Mechanics and Mechanical Engineering, Technical University of Košice, Faculty of Mechanical Engineering, Letná 9, Košice, 04200, Slovakia The article discusses about numerical methods and physics experiment for studying stress fields caused by defined load on beam. Examined the behavior of material under various modes load at individual types of beams. The results are compared, and then the right conclusions are drawn, that it is possible to verify the physical experiment and numerical calculation. For physical experiment was used transmission photoelasticimetry. http://pubs.sciepub.com/ajme/4/7/22/ajme-4-7-22.pdf castellated beam Finite Element Method photoelasticimetry stress analysis