Piezoelectrically induced snap-through buckling in a buckled beam bonded with a segmented actuator

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Aimmanee S., Tichakorn K.

ผู้เผยแพร่: SAGE Publications

ปีที่เผยแพร่ (ค.ศ.): 2018

วารสาร: Journal of Intelligent Material Systems and Structures (1045-389X)

Volume number: 29

Issue number: 9

หน้าแรก: 1862

หน้าสุดท้าย: 1874

จำนวนหน้า: 13

นอก: 1045-389X

eISSN: 1530-8138

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045107581&doi=10.1177%2f1045389X17754270&partnerID=40&md5=cec9ed47b4e889a9cad05e54538178ab

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

In this article, a mathematical model is developed to analyze piezoelectrically induced deformations of bistable smart beams with various geometric configurations and boundary conditions. The model delineates a straight beam bonded with a segmented piezoelectric material. Three types of support conditions are considered, namely, simple, clamped–clamped, and clamped–pinned supports. The beam is buckled into two possible stable curved shapes by means of edge shortening compression. A sudden change in transverse deflection from one to the other stable shape, so-called snap-through action, can be stimulated by electrical activation given to the piezoelectric material. The minimum potential energy principle associated with the modified Ritz method is used to predict developing shapes of the smart beam and the snap-through voltage. Principal minors of bordered Hessian matrix are calculated to determine the stability of the shapes obtained. Experiments were also conducted to corroborate the computational results in the case of the simply-supported smart beam. Comparisons between the two approaches reveal very good agreements in both mid-span displacements of buckled shapes and snap-through voltages. Finally, size and location of the segmented piezoelectric actuator are varied to search for the minimum critical electrical field for each support condition. © 2018, © The Author(s) 2018.

คำสำคัญ

critical voltage, segmented actuator, Snap-through buckling