Polylactic Acid and Its Cellulose Based Composite as a Significant Tool for the Production of Optimized Models Modified for Additive Manufacturing

Abstract

The application of topological optimization is currently considered one of the current trends. Because the shape of the components thus designed is the result of a design generated based on external influences acting on the model, their form can be considered almost optimal. For example, the extent of material savings resulting from shortening production cycles and reducing energy requirements is significant. Due to the way models are produced by layering the material in 3D printing, this technology makes it possible to get a little closer to the models’ optimal shape, for example, to produce prototype models for the production of injection moulds. The amazing amount of plastic and composite materials that this technology brings allows for a variable change in manufactured models based on requirements or external influences. These materials also include a group of materials and composite materials that are classified as biodegradable due to their composition. This fact, combined with the possibility of achieving the most optimal shape of components, contributes to reducing the environmental burden of such oriented production. This work presents the opportunities for modifying topological optimization outputs based on operating parameters and limits of additive production equipment fused deposition modeling (FDM). It gives the possibilities of using alternative ecological materials, their direct application, and the impact on creating models with the help of this technology. The final phase represents the result of the optimization process of the subsystem mechanism and the influence of the mechanical properties of biodegradable materials on the production process and the energy intensity of production. The aim of this work is to point out the fact and possibilities of using composite materials on a natural basis and their possible impact on reducing the environmental burden.

Design of an Atypical Construction of Equipment for Additive Manufacturing with a Conceptual Solution of a Printhead Intended for the Use of Recycled Plastic Materials

“…One of the directions FDM technology is taking is the change in the same approach to generating printhead paths or changing the material method. The current way of generating toolpaths consists of dividing the object to be created into planes that correspond This article closes the imaginary circle of reducing the impact of the environmental load produced by FDM technology, addressed in the publication Polylactic Acid and Its Cellulose Based Composite as a Significant Tool for the Production of Optimized Models Modified for Additive Manufacturing [3]. This publication presented the possibilities of using topological optimisation of models for FDM production and composite biodegradable plastics.…”

“…However, unlike the common components of the "Hotend" and "Bowden" system, it has a reduced version, similar to the large-capacity device used to process the granulate into a filament. The design of the structure consists of an electric motor (3), which transmits the torque to the feeder screw (8) via a flexible coupling (4). It has a check valve (12) at its end.…”

Influence of Gating System Parameters of Die-Cast Molds on Properties of Al-Si Castings

“…During simulation, the development of the melt jet formation was observed in the mold shaping cavity. In the case of the variant with the melt jet directed off the cores, the jet remained compact and followed its direction as spinning of the melt and consequent closure of gases and air in the melt volume was avoided [24]. The shape and formation of the melt jet are shown in Figure 7.…”

“…Due to the facts mentioned abo directing the melt jet without hitting the cores appears more advantageous. Figur shows the distribution of defects occurring in the cast body in the case where the melt hit the core [3,24].…”

Experimental Production of Composite Fiber for Additive Production Technology

“…Although the goal of various institutions is currently to reduce the amount of plastics on Earth, each of us should be involved in reducing the use of plastics. In our rapidly evolving times, new products manufacturing needs to observe the principles of the lowest possible product development lead time and the lowest possible production costs [3], [4], [5]. In this respect, the 3D printing technology, which is the subject of a number of studies by the authors such as Gibson et al [6] and also Zhang et al [7], takes the center stage.…”