Computational design of mechanical characters Journal Article

Author(s): Coros, Stelian; Thomaszewski, Bernhard; Noris, Gioacchino; Sueda, Shinjiro; Forberg, Moira; Sumner, Robert W; Matusik, Wojciech; Bickel, Bernd
Article Title: Computational design of mechanical characters
Abstract: We present an interactive design system that allows non-expert users to create animated mechanical characters. Given an articulated character as input, the user iteratively creates an animation by sketching motion curves indicating how different parts of the character should move. For each motion curve, our framework creates an optimized mechanism that reproduces it as closely as possible. The resulting mechanisms are attached to the character and then connected to each other using gear trains, which are created in a semi-automated fashion. The mechanical assemblies generated with our system can be driven with a single input driver, such as a hand-operated crank or an electric motor, and they can be fabricated using rapid prototyping devices. We demonstrate the versatility of our approach by designing a wide range of mechanical characters, several of which we manufactured using 3D printing. While our pipeline is designed for characters driven by planar mechanisms, significant parts of it extend directly to non-planar mechanisms, allowing us to create characters with compelling 3D motions.
Keywords: fabrication; Animation; Interactive design; Mechanical characters
Journal Title: ACM Transactions on Graphics
Volume: 32
Issue 4
ISSN: 1557-7368
Publisher: ACM  
Date Published: 2013-07-01
Start Page: Article number: 83
DOI: 10.1145/2461912.2461953
Open access: no
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