Thanks for your answer. This picture is taken when solution is getting error and results were read from last set. All though all elements have same dimension because i do not generated solid model So, i know Node location and size of every element. all the elements have same size. will mesh refinement solve the problem because other element of size is not distorting? The load is applied on all top node of top plate So i think this is also not case that distorted elements getting high loads compares to other. Any other Suggestion? n