کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
511080 | 865815 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dynamic responses of flexible-link mechanisms with passive/active damping treatment Dynamic responses of flexible-link mechanisms with passive/active damping treatment](/preview/png/511080.png)
This work presents a finite element formulation for non-linear transient dynamic analysis of adaptive beams. The main contribution of this work concerns the development of an original co-rotational sandwich beam element, which allows large displacements and rotations, and takes active/passive damping into account. This element is composed of a viscoelastic core and elastic/piezoelectric laminated faces. The latter are modeled using classical laminate theory, where the electromechanical coupling is considered by modifying the stiffness of the piezoelectric layers. For the core, a four-parameter fractional derivative model is used to characterize its viscoelastic dissipative behavior. Equations of motion are solved using an incremental-iterative method based on the Newmark direct time integration scheme in conjunction with the Grünwald approximation of fractional derivatives, and the Newton–Raphson algorithm.
Journal: Computers & Structures - Volume 86, Issues 3–5, February 2008, Pages 258–265