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Active snap-fit development using topology optimization

机译：使用拓扑优化的主动扣合开发

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To make disassembly cost-efficient, one-to-many fasteners are needed. These so-called active fasteners use advanced materials or structures as a catalyst for disassembly, allowing multiple assemblies to separate simultaneously after exposure to specific external triggering conditions. Using topology optimization this paper explores the alternative configurations of pressure-based active fasteners. The optimization problem is first solved in the 2D space for a snap-fit like design. Based on these results the problem was extended to 3D and solved. Similar as for the 2D results, a detailed finite element verification was conducted which proved the optimized structure shows an increase of the disassembly efficiency with 200-250% compared to the initial non-optimized structure measured in displacement of the snapping features. As such, this paper shows that for future manufacturing businesses, active fasteners promise to be a valid alternative for shredding. Since the model can easily be modified for other trigger conditions or design configurations, the proposed approach proves to be suitable to develop different types of one-to-many disassembly fasteners.
机译：为了使拆卸具有成本效益，需要一对多的紧固件。这些所谓的主动紧固件使用先进的材料或结构作为拆卸的催化剂，从而允许多个组件在暴露于特定的外部触发条件后同时分离。本文使用拓扑优化来探索基于压力的主动紧固件的替代配置。首先在2D空间中解决类似扣合设计的优化问题。基于这些结果，问题被扩展到3D并得以解决。与2D结果类似，进行了详细的有限元验证，证明与按捕捉特征的位移测量的初始非优化结构相比，优化的结构显示的拆卸效率提高了200-250％。因此，本文表明，对于未来的制造业务，主动式紧固件有望成为切碎的有效选择。由于可以轻松地针对其他触发条件或设计配置修改模型，因此所提出的方法被证明适合开发不同类型的一对多拆卸紧固件。

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