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http://dx.doi.org/10.5139/JKSAS.2002.30.2.067

Papers : Three - dimensional assumed strain solid element for piezoelectric actuator/sensor analysis  

Jo, Byeong-Chan
Lee, Sang-Gi
Park, Hun-Cheol
Yun, Gwang-Jun
Gu, Nam-Seo
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.30, no.2, 2002 , pp. 67-74 More about this Journal
Abstract
The paper deals with a fully assumed strain soild element that can be used for modeling of thin sensors and actuators. To solve fully coupled field problems, the eledtric potential is regarded as a nodal degree of freedom in addition to three translations in an eighteen node assumed strain soild element. Therefore, the induced electric potential can be calculated for a prescribed load and the actuation displacement can be computed for an input voltage. Since the assumed strain solid element can alleviate locking. A finite element code is developed based on the formulation and typical numerical examples are solved for code validation. Using the code, we have conducted parametric study for THUNDER actuator. It is found that a particular combination of materials for layer curvature of THUNDER improves the actuation displacement.
Keywords
Composite; Piezoelectric; Actuator; Assumed Strain Solid Element;
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