Perspectives for organization of internal porous structure of loaded elements of optimal topology

Abstract

Abstract The solution to the problem of topological optimization (TO) is often a complex irregular distribution of material. For this reason, the use of such results until recently was limited to theoretical studies. Modern additive technologies (AT) can solve this problem. A promising feature of AT is the possibility of obtaining a porous internal macrostructure of products. This can be used to optimize their mass during bending loads. In this paper, the problem of minimizing the compliance of a fixed two-dimensional beam is solved. The obtained structure was produced of ABS plastic according to the technology of layer-by-layer fusion of the material at different values of internal porosity. Standard three-point bending tests are implemented. It is shown that the use of porous products is a promising approach to reduce material consumption while maintaining the configuration of the stress-strain state. All other conditions being equal, these samples have greater plasticity and are capable of taking up large loads compared to monolithic products of the same mass.