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Topology and Shape Preserved Lightweight of Shell Models Utilizing Heat Diffusion

机译:利用热扩散的壳模型的拓扑和形状保持轻量级

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Lightweight is one of the most important research subjects in modern manufacturing. However, the research on lightweight of shell models is rare, and most limited in topological changes. This paper proposes a topology and shape preserved lightweight framework of shell models that consists of model analysis, lightweight modeling and analysis, and 3D printing and practical validation in an optimum iterative procedure. Specifically, firstly, both geometric features and empirical features are introduced to construct a frame structure. Secondly, a heat diffusion is exploited to simulate the stress distribution due to two reasons, one is that they have the similar physical transmissibility, the other is that the heat diffusion is smooth, and it guarantees that the thickness variation is smooth and natural without restriction on the degrees of freedom. Then, a local iteration consists of local heat simulation and stress analysis is utilized to further improve the efficiency. Finally, we use 3D printer to manufacture testing models, and apply them to practical verification and feedback. Our extensive experiments have exhibited many attractive properties, including the flexibility and freedom of the thickness variation, the effectiveness and credibility of the lightweight.
机译:轻量级是现代制造业中最重要的研究课题之一。但是,关于壳模型轻量级的研究很少,并且在拓扑变化方面最受限制。本文提出了一种壳模型的拓扑结构和形状保留的轻量级框架,该框架由模型分析,轻量级建模和分析以及3D打印和最佳迭代过程中的实际验证组成。具体地,首先,引入几何特征和经验特征两者以构造框架结构。其次,利用热扩散来模拟应力分布有两个原因,一个是因为它们具有相似的物理传递率,另一个是热扩散是平滑的,并且它保证了厚度变化是平滑自然的而不受限制。在自由度上。然后,由局部热模拟组成的局部迭代和应力分析被用来进一步提高效率。最后,我们使用3D打印机制造测试模型,并将其应用于实际验证和反馈。我们广泛的实验显示出许多吸引人的特性,包括厚度变化的灵活性和自由性,轻量级产品的有效性和可信度。

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