Applications of topology optimization to design compliant cellular mechanisms with and without a contact mechanism are presented in this paper. A two-step procedure is developed. For cellular structures without contact, the inverse homogenization method is employed using ‘Solid Isotropic Material with Penalization’ approach. The compliant mechanism is optimized to yield prescribed elasticity coefficients. The structure is also required to undergo a large overall strain without exceeding the allowable local strain. Results including a honeycomb similar structure and a negative Poisson’s ratio structure are presented. To implement a contact mechanism in the second step, the continuum model of a non-contact structure is converted into a frame model. Such a model is investigated for a contact pair which would reduce the maximum local strain. The scheme demonstrates that stress relief can be obtained.
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ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 21–23, 2009
Oxnard, California, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4897-5
PROCEEDINGS PAPER
Topology Optimization of Contact-Aided Compliant Cellular Mechanisms Available to Purchase
Vipul Mehta,
Vipul Mehta
The Pennsylvania State University, University Park, PA
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Mary Frecker,
Mary Frecker
The Pennsylvania State University, University Park, PA
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George A. Lesieutre
George A. Lesieutre
The Pennsylvania State University, University Park, PA
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Vipul Mehta
The Pennsylvania State University, University Park, PA
Mary Frecker
The Pennsylvania State University, University Park, PA
George A. Lesieutre
The Pennsylvania State University, University Park, PA
Paper No:
SMASIS2009-1367, pp. 305-315; 11 pages
Published Online:
February 16, 2010
Citation
Mehta, V, Frecker, M, & Lesieutre, GA. "Topology Optimization of Contact-Aided Compliant Cellular Mechanisms." Proceedings of the ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 2: Multifunctional Materials; Enabling Technologies and Integrated System Design; Structural Health Monitoring/NDE; Bio-Inspired Smart Materials and Structures. Oxnard, California, USA. September 21–23, 2009. pp. 305-315. ASME. https://doi.org/10.1115/SMASIS2009-1367
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