期刊
JOURNAL OF THERMAL STRESSES
卷 40, 期 1, 页码 55-71出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01495739.2016.1229145
关键词
Cylindrical shell model; free vibration; functionally graded material; modified couple stress theory; porous material; thermal environment
In this article, the free vibration analysis of a functionally graded (FG) porous cylindrical microshell subjected to a thermal environment is investigated on the basis of the first-order shear deformation shells and the modified couple stress theories. The material properties are assumed to be temperature dependent and are graded in the thickness direction. The equations of motion and the related boundary conditions are derived using the principle of minimum potential energy and they are solved analytically. The model is validated by comparing the benchmark results with the obtained ones. The effects of material length scale parameter, temperature changes, volume fraction of the porosity, FG power index, axial and circumferential wave number, and length on the vibration behavior of the FG porous cylindrical microshell are studied. The results can have many applications such as in modeling of microrobots and biomedical microsystems.
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