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首页> 外文期刊>Journal of engineering materials and technology >Analysis and Numerical Simulation of the Structural Performance of Fused Deposition Modeling Samples With Variable Infill Values
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Analysis and Numerical Simulation of the Structural Performance of Fused Deposition Modeling Samples With Variable Infill Values

机译：填充值可变的熔融沉积建模样品的结构性能分析和数值模拟

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摘要

The prediction of the structural performance of additive manufacturing (AM) parts has become one of the main challenges to boost the use of AM in industry. The structural properties of AM are very important in order to design and fabricate parts not only of any geometrical shape but also with variable or customized mechanical properties. While AM experimental studies are common in the literature, a limited number of investigations have focused on the analysis and prediction of the mechanical properties of AM parts using theoretical and numerical approaches, such as the finite element method (FEM); however, their results have been not accurate yet. Thus, more research work is needed in order to develop reliable prediction models able to estimate the mechanical performance of AM parts before fabrication. In this paper, the analysis and numerical simulation of the structural performance of fused deposition modeling (FDM) samples with variable infill values is presented. The aim is to predict the mechanical performance of FDM components using numerical models. Thus, several standard tensile test specimens were fabricated in an FDM system using different infill values, a constant layer thickness, one shell perimeter, and polylactic acid (PLA) material. These samples were measured and modeled in a computer-aided design (CAD) system before performing the experimental tensile tests. Numerical models and simulations based on the FEM method were then developed and carried out in order to predict the structural performance of the specimens. Finally, the experimental and numerical results were compared and conclusions drawn.
机译：增材制造（AM）零件的结构性能的预测已成为在工业中促进AM使用的主要挑战之一。为了设计和制造不仅具有任何几何形状的零件，而且具有可变或定制的机械性质的零件，AM的结构性质非常重要。虽然AM实验研究在文献中很普遍，但有限的研究集中在使用理论和数值方法（例如有限元方法（FEM））对AM零件的机械性能进行分析和预测。但是，他们的结果还不准确。因此，需要更多的研究工作来开发能够在制造之前估算AM零件机械性能的可靠预测模型。本文介绍了具有可变填充值的熔融沉积建模（FDM）样品的结构性能分析和数值模拟。目的是使用数值模型来预测FDM组件的机械性能。因此，在FDM系统中使用不同的填充值，恒定的层厚度，一个壳周长和聚乳酸（PLA）材料在FDM系统中制造了几个标准拉伸试样。在进行实验拉伸试验之前，这些样品在计算机辅助设计（CAD）系统中进行了测量和建模。然后开发并进行了基于FEM方法的数值模型和仿真，以预测样品的结构性能。最后，对实验结果和数值结果进行了比较并得出结论。

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