The main goal of this paper is the study of bag’s shape influence and internal friction angle of sand on ultimate compression capacity of sand-bag system under vertical load. In present paper, first ultimate value of compression capacity of sand-bag system will be measured by using analytical method under boundary condition like semicircle and semi-ellipse geometric form. Then the maximum of compression capacity of sand-bag system will be studied for different values of internal friction angles of sand. And so, mechanical behavior of sand-bag system will be analyzed for measuring of that compression capacity maximum, under semi-ellipse, semicircle segments and different internal friction angles of sand by using ABAQUS finite element software in threedimensional form. In this method sand and polypropylene polymer bag behavior were defined by using Mohrcoulomb and Elastic-Plastic methods. The results show that compression capacity of sand-bag system will be increased under external loads with increasing of sand internal friction angles.
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