Optimal synthesis of compliant mechanisms using subdivision and commercial FEA
Optimal synthesis of compliant mechanisms using subdivision and commercial FEA
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DOI：
10.1115/1.2159026
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发表时间：
2006-03
影响因子：
3.3
通讯作者：
P. Hull;S. Canfield
中科院分区：
文献类型：
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作者：
P. Hull;S. Canfield
分布式柔顺机构领域已经在开发用于其设计的合适的拓扑优化工具方面进行了重要的工作。这些优化设计工具已经从结构优化技术中发展出来。本文将建立在拓扑优化和柔性机构设计的工作，提出了一种替代的设计空间参数化通过控制点，并增加了另一个步骤的过程中，细分。控制点允许在优化过程中将特定设计表示为实体模型。细分的过程创建了额外数量的控制点，这些控制点有助于平滑曲面（例如，取决于所选择的细分方法的C 2连续曲面），从而创建了一个可制造的设计，而没有一些传统的数值不稳定性。请注意，这些额外的控制点不会增加设计参数的数量。这种替代参数化和实体模型的描述在优化过程中有效且完全地将设计变量与分析变量分离。这项工作背后的动机是创建一个自动化的设计工具，从任务定义到在CNC或快速原型机上创建的功能原型。本文将描述所提出的顺应性机制的设计过程，并将展示在文献中常见的几个例子的过程。
The field of distributed-compliance mechanisms has seen significant work in developing suitable topology optimization tools for their design. These optimal design tools have grown out of the techniques of structural optimization. This paper will build on the previous work in topology optimization and compliant mechanism design by proposing an alternative design space parametrization through control points and adding another step to the process, that of subdivision. The control points allow a specific design to be represented as a solid model during the optimization process. The process of subdivision creates an additional number of control points that help smooth the surface (for example a C 2 continuous surface depending on the method of subdivision chosen) creating a manufacturable design free of some traditional numerical instabilities. Note that these additional control points do not add to the number of design parameters. This alternative parametrization and description as a solid model effectively and completely separates the design variables from the analysis variables during the optimization procedure. The motivation behind this work is to create an automated design tool from task definition to functional prototype created on a CNC or rapid-prototype machine. This paper will describe the proposed compliant mechanism design process and will demonstrate the procedure on several examples common in the literature.