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OPTIMAL BOUNDARY CONTROL FOR A SECOND STRAIN GRADIENT THEORY-BASED BEAM MODEL

Year 2019, Volume: 37 Issue: 4, 1280 - 1292, 01.12.2019

Abstract

The second strain gradient theory is a non-classical continuum theory that captures the behavior of micrometer and nanometer sized beam structures. Timoshenko and Euler-Bernoulli theories are classical beam models that neglect the effects of small size structures when compared to the second strain gradient theory-based beam model. In this study, an optimal boundary control problem is formulated for the second strain gradient theory-based beam model to control free vibrations in the system. A quadratic performance index expressing the dynamic response of the system is to be minimized while an affordable control is in use. An indirect method based on Pontryagin’s maximum principle is used to derive a necessary condition analytically for optimal control. Then, the problem is transformed into a system of partial differential equations consisting of state and costate (adjoint) variables together. The solution of the control problem is carried out using the computer codes produced in MATLAB©. The effectiveness and competence of the introduced optimal boundary control are presented in numerical simulations.

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There are 37 citations in total.

Details

Primary Language English
Journal Section Research Articles
Authors

Seda Göktepe Körpeoğlu This is me 0000-0001-7146-0846

Ismail Kucuk This is me 0000-0003-3071-0612

Kenan Yıldırım This is me 0000-0002-4471-3964

Publication Date December 1, 2019
Submission Date February 25, 2018
Published in Issue Year 2019 Volume: 37 Issue: 4

Cite

Vancouver Göktepe Körpeoğlu S, Kucuk I, Yıldırım K. OPTIMAL BOUNDARY CONTROL FOR A SECOND STRAIN GRADIENT THEORY-BASED BEAM MODEL. SIGMA. 2019;37(4):1280-92.

IMPORTANT NOTE: JOURNAL SUBMISSION LINK https://eds.yildiz.edu.tr/sigma/