TY - GEN
T1 - Design of compliant mechanical amplifiers for piezoceramic stack actuators considering stiffness properties
AU - Frecker, Mary
AU - Canfield, Shawn
N1 - Funding Information:
The authors gratefully acknowledge the support of National Science Foundation Division of Design, Manufacture, and Industrial Innovation grant number DMI-9870527.
Publisher Copyright:
© 2000 by ASME.
PY - 2000
Y1 - 2000
N2 - A topology optimization method for design of compliant mechanical amplifiers for piezoceramic stack actuators is presented. Previously the optimization was done assuming that the stack actuator provided a constant unit load to the compliant mechanism. However, it is well known that the best actuator performance occurs when the stiffness of the stack is considered and matches the stiffness of the surrounding coupling structure. In this paper an improved formulation is presented where the piezoelectric properties and stiffness of the stack are included along with an external spring representing a resisting load the actuator is working against. The optimization problem formulation, finite element implementation, solution algorithm are discussed. Two design examples are presented which illustrate the effect of the stiffness of the external spring and the size of the design domain on the topology of the solution.
AB - A topology optimization method for design of compliant mechanical amplifiers for piezoceramic stack actuators is presented. Previously the optimization was done assuming that the stack actuator provided a constant unit load to the compliant mechanism. However, it is well known that the best actuator performance occurs when the stiffness of the stack is considered and matches the stiffness of the surrounding coupling structure. In this paper an improved formulation is presented where the piezoelectric properties and stiffness of the stack are included along with an external spring representing a resisting load the actuator is working against. The optimization problem formulation, finite element implementation, solution algorithm are discussed. Two design examples are presented which illustrate the effect of the stiffness of the external spring and the size of the design domain on the topology of the solution.
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U2 - 10.1115/IMECE2000-2433
DO - 10.1115/IMECE2000-2433
M3 - Conference contribution
AN - SCOPUS:0242562182
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 867
EP - 874
BT - Dynamic Systems and Control
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000
Y2 - 5 November 2000 through 10 November 2000
ER -