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- W2026490632 abstract "Higher-order gradient continuum mechanics theories are of critical importance as they can afford to describe the size-dependent mechanical behavior of micro-scale structures. In this article, based on the most general form of strain gradient elasticity theory, a new extended Timoshenko beam element capable of accommodating size effects is introduced. To this end, the higher-order tensors of energy pairs in the energy functional are vectorized and represented in the quadratic form first. This gives way to realize the stiffness and mass matrices of the newly proposed element. Compared to the standard Timoshenko beam element, the new element requires two additional nodal degrees of freedom (d.o.f.) consisting of derivatives of lateral translation and rotation, which means a total of 4 d.o.f. per node. Therefore, the Hermite functions are employed to construct the shape functions of this new element. The proposed element is indicated to exhibit stiffer character, making it desirable when dealing with the problems at the microscale. Also, the standard Timoshenko beam element is recovered when the small scale factor tends to zero. Using this new element, the free vibration and bending of Timoshenko microbeams are investigated. The results are compared with those available in the literature and excellent agreement is achieved." @default.
- W2026490632 created "2016-06-24" @default.
- W2026490632 creator A5042569343 @default.
- W2026490632 creator A5047940562 @default.
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- W2026490632 date "2015-09-01" @default.
- W2026490632 modified "2023-10-16" @default.
- W2026490632 title "Small-scale Timoshenko beam element" @default.
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- W2026490632 doi "https://doi.org/10.1016/j.euromechsol.2015.02.005" @default.
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