Author
Hossein Rafieipour
Bio: Hossein Rafieipour is an academic researcher from Shiraz University of Technology. The author has contributed to research in topics: Nonlinear system & Parametric statistics. The author has an hindex of 3, co-authored 4 publications receiving 37 citations.
Papers
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TL;DR: In this article, nonlinear behavior analysis of an asymmetrically laminated composite beam (LCB) on nonlinear foundation under axial and in-plane thermal loading is considered.
Abstract: In this paper, nonlinear behavior analysis of an asymmetrically laminated composite beam (LCB) on nonlinear foundation under axial and in-plane thermal loading is considered. To solve the obtained governing equation, a novel method based on Laplace transform is used. The resulted approximate analytical solution allows us the parametric study of different parameters which influence the nonlinear behavior of the system. The numerical results illustrate that proposed technique yields a very rapid convergence of the solution as well as low computational effort. The accuracy of the proposed method is verified by those available in literatures.
20 citations
Journal Article•
TL;DR: In this article, a non-linear behavioral analysis of an ASYMMETRICALLY LAMINATED COMPOSITE BEAM (LCB) under AXIAL and in-PLANE THERMAL LOADING is considered.
Abstract: NORMAL 0 FALSE FALSE FALSE EN-US X-NONE AR-SA IN THIS PAPER, NONLINEAR BEHAVIOR ANALYSIS OF AN ASYMMETRICALLY LAMINATED COMPOSITE BEAM (LCB) ON NONLINEAR FOUNDATION UNDER AXIAL AND IN-PLANE THERMAL LOADING IS CONSIDERED. TO SOLVE THE OBTAINED GOVERNING EQUATION A NOVEL METHOD BASED ON LAPLACE TRANSFORM IS USED. THE RESULTED APPROXIMATE ANALYTICAL SOLUTION ALLOWS US TO PARAMETRIC STUDY OF DIFFERENT PARAMETERS WHICH INFLUENCES ON NONLINEAR BEHAVIOR OF THE SYSTEM. THE NUMERICAL RESULTS ILLUSTRATE THAT PROPOSED TECHNIQUE YIELDS A VERY RAPID CONVERGENCE OF THE SOLUTION SERIES AS WELL AS LOW COMPUTATIONAL EFFORT. THE ACCURACY OF THE PROPOSED METHOD IS VERIFIED BY THOSE AVAILABLE IN LITERATURES.
9 citations
TL;DR: In this article, a new analytical method called Laplace iteration method (LIM) is used to investigate nonlinear vibration behavior of Euler-Bernoulli and Rayleigh beam on nonlinear elastic foundation with three different combinations of edge conditions (simply supported, clamped clamped and simply supported clamped) subjected to axial load.
Abstract: In this study, a new analytical method called Laplace iteration method (LIM) is used to investigate nonlinear vibration behavior of Euler–Bernoulli and Rayleigh beam on nonlinear elastic foundation with three different combinations of edge conditions (simply supported, clamped–clamped and simply supported–clamped) subjected to axial load. Closed form solutions for natural frequencies, beam deflection, critical buckling and post-buckling loads are also presented. Furthermore, the effects of vibration amplitude, slenderness ratio, linear and nonlinear elastic coefficients of foundation and axial load on the nonlinear frequency and buckling load are discussed. Finally, results obtained by the proposed method are compared with those available in literature. The results showed that in comparison with other approximate analytical solutions, LIM leads to solutions that are in good agreement with respect to existing references which are valid for a wide range of vibration amplitudes meanwhile one or two iterations are enough for obtaining the results.
7 citations
TL;DR: In this article, a multidisciplinary design procedure was presented to fabricate hybrid composite sandwich (HCS) panels used in radomes based on conducting several mechanical and electromagnetic experiments, and six specimens made of E-glass/aramid/polyester face sheets with different stacking sequences and polyvinyl chloride foam core were prepared using the vacuum-assisted resin transfer molding process.
6 citations
Cited by
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TL;DR: In this article, a nonlinear frequency-amplitude relation is developed to investigate the vibrational amplitude effect on the dynamic pull-in instability of double-sided-actuated nano-torsional switches.
45 citations
TL;DR: In this paper, the application of modern analytical approaches to the governing equation of transversely vibrating quintic nonlinear beams with nonlinear nonlinearity is discussed, and the first terms in series expansions of all methods are sufficient to obtain a highly accurate solution.
40 citations
TL;DR: In this article, the pull-in instability of vibrating micro-beams undergoing large deflection under electrosatically actuation is investigated and a modified couple stress theory is derived based on the modified couplestress theory.
Abstract: This paper investigates the dynamic pull-in instability of vibrating micro-beams undergoing large deflection under electrosatically actuation. The governing equation of motion is derived based on the modified couple stress theory. Homotopy Perturbation Method is employed to produce the high accuracy approximate solution as well as the second-order frequency- amplitude relationship. The nonlinear governing equation of micro beam vibrations predeformed by an electric field includes both even and odd nonlinearities. The influences of basic non-dimensional parameters on the pull-in instability as well as the natural frequency are studied. It is demonstrated that two terms in series expansions are sufficient to produce high accuracy solution of the micro-structure. The accuracy of proposed asymptotic approach is validated via numerical results. The phase portrait of the system exhibits periodic and homoclinic orbits.
39 citations
TL;DR: In this paper, the vibrations of combined hemispherical-cylindrical shells (CHCSs) made of three-phase nanocomposite materials were investigated, and the proposed formulations were validated by comparing the achieved results with reference solutions and the outputs of a commercial FEM software.
34 citations
29 citations