Performance Of Cross Sectional Geometries Of Beams According To Buckling Strength Which Are 3d Printed With The Same Amount Of Filament

Abstract

Aim of this study is to determine the cross sectional geometries of beams which have better response to buckling with the usage of same amount of filament. These beams have the same cross sectional area and length. Thus, design points were sorted freely without the consideration of the amount of filament, printing time and energy consumption. Length of beams and applied forces were kept constant for each design point, besides that basic cross sectional geometries were changed for each design series. These geometries were selected as, circle, rectangle, equilateral triangle, rhombus (diamond), ellipse and rounded rectangle. Moreover four different printing material were taken into consideration for comparison according to buckling. Depending on 6 different cross sectional shape, 101 cross sectional area and 4 material, totally 2424 design alternatives were built. Firstly, mathematical model of these designs were constructed, then they were tested by using finite element method (FEM) and regression analysis. All model branches were compared to each other with the statistical analysis. As a result of all analyses, design alternatives were sorted according to mechanical strength.

Keywords

• Filament
• Optimization
• beam
• buckling