TY - GEN
T1 - Topology optimization of contact-aided compliant cellular mechanisms
AU - Mehta, Vipul
AU - Frecker, Mary
AU - Lesieutre, George A.
PY - 2009/12/1
Y1 - 2009/12/1
N2 - 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.
AB - 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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U2 - 10.1115/SMASIS2009-1367
DO - 10.1115/SMASIS2009-1367
M3 - Conference contribution
AN - SCOPUS:77953769763
SN - 9780791848975
T3 - Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems 2009, SMASIS2009
SP - 305
EP - 315
BT - Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems 2009, SMASIS2009
T2 - 2009 ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS2009
Y2 - 21 September 2009 through 23 September 2009
ER -