Generative design for additive manufacturing using a biological development analogy
Generative design for additive manufacturing using a biological development analogy
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使用生物发育类比进行增材制造的生成设计
DOI：
10.1093/jcde/qwac016
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发表时间：
2022
影响因子：
4.9
通讯作者：
Price M
中科院分区：
文献类型：
--
作者：
Price M
由新工艺（如增材制造）驱动的制造能力转型为产品创新提供了巨大的潜力，并有机会根据个人规格或需求定制设计。然而，目前的设计系统和工具还不能充分利用这些新技术，需要新的方法。许多当前的方法是自上而下和顺序的，提供有限的灵活性和过度约束的设计空间。需要进行后处理以确保设计可以被制造。这项工作提出了一种新的自下而上的方法来生成可以与增材制造环境紧密集成的设计，并且可以灵活地响应该环境中的变化。该方法将悬挑作为一种典型的制造约束，通过局部调整几何形状以保持在限制范围内或通过添加适当的支撑结构来改变设计。该方法是生物启发的，基于在自然系统中观察到的策略，特别是在生物生长和发育中。设计几何是在一个计算机辅助设计为基础的，生物启发的生成设计系统称为'生物学'。这个过程类似于植物生长，设计的最终配置，形状和尺寸由制造能力和内部设计应力决定。该方法针对悬挑限制和建筑方向进行了演示，并且可扩展到任何一般情况。
The transformation in manufacturing capability being driven by new processes, such as additive manufacturing, offers huge potential for product innovation and opportunity to create bespoke designs tailored to individual specifications or needs. However, current design systems and tools are not yet capable of fully capitalizing on these new technologies and new approaches are needed. Many current methodologies are top-down and sequential, offering limited flexibility and an overly constrained design space. Post-processing is needed to ensure that a design can be manufactured. This work presents a novel bottom-up methodology to generate designs that can be tightly integrated with the additive manufacturing environment and that can respond flexibly to changes in that environment. Focusing on overhang as an exemplar manufacturing constraint, the method engenders changes in the design either by locally adjusting the geometry to stay within limits or by adding an appropriate support structure. The method is bio-inspired, based on strategies observed in natural systems, particularly in biological growth and development. The design geometry isgrownin a computer-aided design-based, bio-inspired generative design system called ‘Biohaviour’. This process is similar to plant growth, and the design’s final configuration, shape, and size are informed by both the manufacturing capability and internal design stresses. The approach is demonstrated for overhang limit and build orientation and is extensible to any general situation.