Thermal resonance in the heat conduction problem with a heat source moving along a closed circuit

Repin, A. A.

doi:10.1007/bf00862039

Cited by 1 publication

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“…In addition, general recommendation on the optimization of their dynamic performance is discussed. For future work, scientific research on phenomenon such as response on other frequencies and potential effect of ambient air through fluid solid interaction, as well as thermal resonance [34] can be studied in future to acquire a better understanding of the underlying phenomenon in this system and subsequently its further optimization.…”

Section: Discussionmentioning

confidence: 99%

Analysis and Design of Thermally Actuated Micro-Cantilevers for High Frequency Vibrations Using Finite Element Method

Komeili¹,

Menon²

2016

WJM

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Vibrational behavior of thermally actuated cantilever micro-beams and their mechanical response at moderately high frequency under a non-harmonic periodic loading is studied in this paper. Two different configurations are considered: 1) a straight beam with two actuation layers on top and bottom which utilizes the bimorph effect to induce bending; 2) a uniform beam with base excitation, where the beam is mounted on an actuator which moves it periodically at its base perpendicular to its axis. Generally, vibrating micro-cantilevers are required to oscillate at a specified frequency. In order to increase the efficiency of the system, and achieve deflections with low power consumption, geometrical features of the beams can be quantified so that the required vibrating frequency matches the natural frequencies of the beam. A parametric modal analysis is conducted on two configurations of micro-cantilever and the first natural frequency of the cantilevers as a function of geometrical parameters is extracted. To evaluate vibrational behavior and thermomechanical efficiency of micro-cantilevers as a function of their geometrical parameters and input power, a case study with a specified vibrating frequency is considered. Due to significant complexities in the loading conditions and thermo-mechanical behavior, this task can only be tackled via numerical methods. Selecting the geometrical parameters in order to induce resonance at the nominal frequency, non-linear time-history (transient) thermo-mechanical finite element analysis (using ANSYS) is run on each configuration to study its response to the periodic heating input. Approaches to improve the effectiveness of actuators in each configuration based on their implementation are investigated.

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Section: Discussionmentioning

confidence: 99%