The emergence of low-cost 3D printers steers the investigation of new geometric problems that control the quality of the fabricated object. In this paper, we present a method to reduce the material cost and weight of a given object while providing a durable printed model that is resistant to impact and external forces. We introduce a hollowing optimization algorithm based on the concept of honeycomb-cells structure. Honeycombs structures are known to be of minimal material cost while providing strength in tension. We utilize the Voronoi diagram to compute irregular honeycomb-like volume tessellations which define the inner structure. We formulate our problem as a strength--to--weight optimization and cast it as mutually finding an optimal interior tessellation and its maximal hollowing subject to relieve the interior stress. Thus, our system allows to build-to-last 3D printed objects with large control over their strength-to-weight ratio and easily model various interior structures. We demonstrate our method on a collection of 3D objects from different categories. Furthermore, we evaluate our method by printing our hollowed models and measure their stress and weights.
Build-to-last
Lin Lu,Andrei Sharf,Haisen Zhao,Yuan Wei,Qingnan Fan,Xuelin Chen,Yann Savoye,Changhe Tu,D. Cohen-Or,Baoquan Chen
Published 2014 in ACM Transactions on Graphics
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- Publication year
2014
- Venue
ACM Transactions on Graphics
- Publication date
2014-07-27
- Fields of study
Materials Science, Computer Science, Engineering
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