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Towards an ontology for generative design of mechanical assemblies

机译：朝着机械组件的生成设计的本体论

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摘要

In software-based generative design, a user specifies goals expressed as objectives and constraints to a software application and the application returns a set of feasible and/or optimal design solutions. For problems involving discrete design variables, such as in configuration design, searching the design space is often computationally intractable. Therefore, in the context of the configuration design of mechanical assemblies, we are investigating the use of ontologies to model and reason about designs while providing the ability to more efficiently prune infeasible designs. In this paper, we present an ontology to specify connection, parthood, and shapes in mechanical assemblies, so that the constraints of feasible configurations can be logically expressed and used during generative design. The ontology extends the Ground Mereotopology (MT) of Casati and Varzi to a multi-dimensional mereotopology and combines it with a qualitative shape ontology based on the Hilbert's axiomatic theory of geometry. Relationships between equi-dimensional individuals are captured by MT, while individuals with different dimensions are mereotopologically independent and are related by incidence relations. The proposed ontology is a module in the larger effort to develop an overarching PhysicalWorld Ontology. We demonstrate the application of the proposed ontology in specifying properties of suspension systems and mechanical joints.
机译：在基于软件的生成设计中，用户指定作为目标的目标和对软件应用程序的约束，并且应用程序返回一组可行和/或最佳的设计解决方案。对于涉及离散设计变量的问题，例如在配置设计中，搜索设计空间通常是在计算上难以解决的。因此，在机械组件的配置设计的背景下，我们正在研究本体的使用，同时提供更有效地修剪不可行设计的能力的设计和理由。在本文中，我们介绍了一个本体学，以指定机械组件中的连接，上下奏和形状，从而可以在生成设计期间逻辑地表达和使用可行配置的约束。本体延伸了Casati和Varzi的地下表孔学（MT），以多维小型机寄生术，并基于希尔伯特的几何理学理论，将其与定性形状本体结合起来。通过MT捕获Equi维个体之间的关系，而具有不同尺寸的个体是小型特性独立的，并且涉及发病关系。所提出的本体论是一种较大努力开发总体物理世界本体的模块。我们展示了所提出的本体论在指定悬架系统和机械接头的性能方面的应用。

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