| It is not easy and not always to find an exact mathematical solution for problems in buckling phenomena. In fact, analytical solution can only be applied to some simple conditions. For problem concerning complex material property, loading, geometry and boundary condition, in general there are adequate assumption and idealization to achieve the required mathematical solution, and also to give an empirical solution and satisfactory result in safety and economic print of view. The relation between pure physical system and exact mathematical solution can be realized by providing mathematical model to explain ideal substitution system including all assumption of physical problems. In this research, it will he study (he theoretical method based on elasticity theory and state of stress analysis for obtain the critical load to the buckling of thin rectangular plate and then, that can be observed buckling phenomena studied experimentally and its comparison with mathematical model. The result 12,4% difference between theoretical method to experimental method. |