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

Hoon Cheol Park; Sangki Lee; Byung Chahn Cho; Kwang Joon Yoon; Nam Seo Goo

doi:10.1117/12.436506

21 August 2001 Three-dimensional assumed strain solid element for piezoelectric actuator/sensor analysis

Hoon Cheol Park, Sangki Lee, Byung Chahn Cho, Kwang Joon Yoon, Nam Seo Goo

Proceedings Volume 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures; (2001) https://doi.org/10.1117/12.436506
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

This paper deals with a fully coupled assumed strain solid element that can be used for simultaneous moiling of thin sensors and actuators. To solve fully coupled field problems, electric potential is regarded as a nodal degree of freedom in addition to three translations in an eighteen node assumed strain solid element. Therefore, the induced electric potential can be calculated for a prescribed deformation or an applied load. Since the original assumed strain solid element is free of locking, the element can be used to analyze behavior of very thin actuators without locking. Numerical examples, such as a typical bimorph actuator/sensor beam problem shows that the present element can handle fully coupled problems. Using the solid element, we have analyzed the actuation performance of THUNDER and compared the result with measured data. The comparison shows that the numerical estimation agrees well with measured displacement for simply supported boundary condition. It is also found that a particular combination of materials for layers and curvature of THUNDER improve actuation displacement.

Citation Download Citation

Hoon Cheol Park, Sangki Lee, Byung Chahn Cho, Kwang Joon Yoon, and Nam Seo Goo "Three-dimensional assumed strain solid element for piezoelectric actuator/sensor analysis", Proc. SPIE 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures, (21 August 2001); https://doi.org/10.1117/12.436506

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