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Additive manufacturing and stress analysis of naturally and artificially optimized cellular structures.

机译:自然和人工优化的细胞结构的增材制造和应力分析。

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摘要

The main objective of our research is to manufacture topology optimized cellular structures using 3D printing and polymer infusion and obtain their structural response. First, we have obtained topology optimized cellular structure of beam using an in-house topology optimization tool. The Solid Isotropic material with Penalization (SIMP) method of optimization is used for finding the optimal topology. Since we require a continuous structure where we can take advantage of additive manufacturing, a no-penalty approach was chosen. For 3D printing, first the optimized condition for manufacturing was determined. Important parameters on which manufacturing depend are Number of Shells, Infill percentage and Layer thickness. Then we manufacture the optimized structures using Fused Deposition Modeling. Next we fill the voids of the structures using polyurethane foam. The performance of the structures are first assessed by performing static tensile/compression test followed by bending tests and also by using Finite element based stress analysis in ABAQUS.
机译:我们研究的主要目的是使用3D打印和聚合物注入来制造拓扑优化的细胞结构,并获得其结构响应。首先,我们使用内部拓扑优化工具获得了梁的拓扑优化蜂窝结构。采用优化的带有罚分的固体各向同性材料(SIMP)来找到最佳拓扑。由于我们需要一个连续的结构,可以利用增材制造的优势,因此选择了无惩罚方法。对于3D打印,首先要确定制造的最佳条件。制造所依赖的重要参数是壳数,填充百分比和层厚度。然后,我们使用融合沉积模型制造优化的结构。接下来,我们使用聚氨酯泡沫填充结构的空隙。首先通过执行静态拉伸/压缩测试,然后进行弯曲测试以及在ABAQUS中使用基于有限元的应力分析来评估结构的性能。

著录项

  • 作者

    Jose, Sachin.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Mechanical engineering.
  • 学位 M.S.M.E.
  • 年度 2015
  • 页码 55 p.
  • 总页数 55
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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