Dependence Between the Mechanical Characteristics of the Material and the FDM Sample Made From This Material

The possibilities of FDM printing make it attractive for the transport engineering industry. Due to its specificity, FDM printing technology is becoming in demand for almost all areas of this industry: automotive, aerospace, shipbuilding, and the railway industry. Along with modeling and prototyping, it is of interest to use FDM technology to create products with a given bearing capacity. The specificity of the technology allows to create products of almost any geometry and size with a high accuracy of compliance with the 3D model. However, the description of the physical and mechanical characteristics of these products is currently very difficult. The layering and discreteness of the medium filling the volume of the product do not allow using the tools of continuum mechanics. Hence, it is difficult to analyze the strength and stiffness of such structural elements. To eliminate these difficulties, it is necessary to establish the dependence between the mechanical characteristics of the product and the filament material with which the product is manufactured. For this, the samples were tested for central tension with unloading under a static method of force action. The samples were made using FDM printing. The purpose of the tests was a comparative analysis of the behavior of FDM sample deformation and the filament material from which this sample was made. This analysis made it possible to establish that their behavior at the initial stage of loading is qualitatively the same.