Talks and Poster Presentations (with Proceedings-Entry):
P. Musialski, C. Hafner, T. Auzinger, M. Wimmer, L. Kobbelt:
"Optimization of Natural Frequencies for Fabrication-Aware Shape Modeling";
Poster: ACM Siggraph,
Los Angeles, CA, USA (invited);
2015-08-09
- 2015-08-13; in: "acm",
Proceedings of ACM SIGGRAPH 2015 Posters,
(2015),
1
- 4.
English abstract:
Given a target shape and a target frequency, we automatically synthesize a shape that exhibits this frequency as part of its natural spectrum, while resembling the target shape as closely as possible. We employ finite element modal analysis with thin-shell elements to accurately predict the acoustic behavior of 3d solids. Our optimization pipeline uses an input surface and automatically calculates an inner offset surface to describe a volumetric solid. The solid exhibits a sound with the desired pitch if fabricated from the targeted material. In order to validate our framework, we optimize the shape of a tin bell to exhibit a sound at 1760 Hz. We fabricate the bell by casting it from a mold and measure the frequency peaks in its natural ringing sound. The measured pitch agrees with our simulation to an accuracy of 2.5%. In contrast to previous method, we only use reference material parameters and require no manual tuning.
Keywords:
natural frequencies, modal analysis, shape optimization
Electronic version of the publication:
http://publik.tuwien.ac.at/files/PubDat_239479.pdf
Created from the Publication Database of the Vienna University of Technology.