Anooshiravan Farshidianfar

Ferdowsi University of Mashhad

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Seyedeh Fatemeh Nabavi

Purdue University West Lafayette

Mohammad Hossein Farshidianfar

Ferdowsi University of Mashhad

Pouria Oliazadeh

Ferdowsi University of Mashhad

Aref Afsharfard

Pusan National University

Payam Soltani

Muscat College

Hamid Dalir

Purdue University West Lafayette

Saeed Soheili

Islamic Azad University, Mashhad

M. Akbarzade

University of Technology Sydney

A. Saghafi

University of Birjand

Malcolm J. Crocker

Auburn University

Cooperative Institutions

Ferdowsi University of Mashhad

Islamic Azad University, Tehran

Amirkabir University of Technology

Purdue University West Lafayette

Islamic Azad University Semnan

University of Bradford

Sharif University of Technology

Tokyo Institute of Technology

University of Tehran

Babol Noshirvani University of Technology

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Comprehensive review: Advancements in modeling geometrical and mechanical characteristics of laser powder bed fusion process

Optics & Laser Technology (2024)

Seyedeh Fatemeh Nabavi Anooshiravan Farshidianfar Hamid Dalir

10.1016/j.optlastec.2024.111480

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Citations (3)

Finding the buckling load of non-uniform columns using the iteration perturbation method

Theoretical and Applied Mechanics Letters (2014)

Aref Afsharfard Anooshiravan Farshidianfar

The aim of this study is to calculate the critical load of variable inertia columns. The example studied in this paper can be used as a paradigm for other non-uniform columns. The wavelength of equivalent vibratory system is used to calculate the critical load of the trigonometrically varied inertia column. In doing so, the equilibrium equation of the column is theoretically studied using the perturbation method. Accuracy of the calculated results is evaluated by comparing the solution with numerical results. Effect of improving the initial guess on the solution accuracy is investigated. Effects of varying parameters of the trigonometrically varied inertia and the uniformly tapered columns on their stability behavior are studied. Finally, using the so-called "perfectibility" parameter, two design goals, i.e., being lightweight and being strong, are studied for the discussed columns.

Critical load

10.1063/2.1404111

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Citations (6)

Experimental and analytical investigation on sound transmission loss of cylindrical shells with absorbing material

Journal of Sound and Vibration (2018)

Pouria Oliazadeh Anooshiravan Farshidianfar Malcolm J. Crocker

Sound transmission class

Transmission loss

10.1016/j.jsv.2018.07.017

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Citations (20)

Vibration analysis of long cylindrical shells using acoustical excitation

Journal of Sound and Vibration (2011)

Anooshiravan Farshidianfar Mohammad Hossein Farshidianfar Malcolm J. Crocker Wesley O. Smith

Shell theory

10.1016/j.jsv.2011.02.002

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Citations (28)

An ocean wave-based piezoelectric energy harvesting system using breaking wave force

International Journal of Mechanical Sciences (2018)

Seyedeh Fatemeh Nabavi Anooshiravan Farshidianfar Aref Afsharfard Hamed Haddad Khodaparast

Mechanical energy

Breakwater

Electric potential energy

Energy transformation

10.1016/j.ijmecsci.2018.12.008

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Citations (67)

Rolling element bearings multi-fault classification based on the wavelet denoising and support vector machine

Mechanical Systems and Signal Processing (2007)

Saeed Abbasion Ahmad Rafsanjani Anooshiravan Farshidianfar N. Irani

Rolling-element bearing

SIGNAL (programming language)

Condition Monitoring

10.1016/j.ymssp.2007.02.003

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Citations (367)

Novel piezoelectric-based ocean wave energy harvesting from offshore buoys

Applied Ocean Research (2018)

Seyedeh Fatemeh Nabavi Anooshiravan Farshidianfar Aref Afsharfard

Buoy

Marine energy

Electric potential energy

Energy transformation

10.1016/j.apor.2018.05.005

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Citations (80)

Vibration and instability of a viscous-fluid-conveying single-walled carbon nanotube embedded in a visco-elastic medium

Journal of Physics D Applied Physics (2010)

Payam Soltani M.M. Taherian Anooshiravan Farshidianfar

In this study, for the first time, the transverse vibrational model of a viscous-fluid-conveying single-walled carbon nanotube (SWCNT) embedded in biological soft tissue is developed. Nonlocal Euler–Bernoulli beam theory has been used to investigate fluid-induced vibration of the SWCNT while visco-elastic behaviour of the surrounding tissue is simulated by the Kelvin–Voigt model. The results indicate that the resonant frequencies and the critical flow velocity at which structural instability of nanotubes emerges are significantly dependent on the properties of the medium around the nanotube, the boundary conditions, the viscosity of the fluid and the nonlocal parameter. Detailed results are demonstrated for the dependence of damping and elastic properties of the medium on the resonant frequencies and the critical flow velocity. Three standard boundary conditions, namely clamped–clamped, clamped–pinned and pinned–pinned, are applied to study the effect of the supported end conditions. Furthermore, it is found that the visco-elastic foundation causes an obvious reduction in the critical velocity in comparison with the elastic foundation, in particular for a compliant medium, pinned–pinned boundary condition, high viscosity of the fluid and small values of the nonlocal coefficient.

Viscous liquid

Volume viscosity

Critical ionization velocity

10.1088/0022-3727/43/42/425401

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Citations (82)

Study of wind-induced vibrations in tall buildings with tuned mass dampers taking into account vortices effects

International Journal of Advanced Structural Engineering (2017)

A Ajilian Momtaz Mohamadreza Akhavan Abdollahian Anooshiravan Farshidianfar

In recent years, construction of tall buildings has been of great interest. Use of lightweight materials in such structures reduces stiffness and damping, making the building more influenced by wind loads. Moreover, tall buildings of more than 30 to 40 stories, depending on the geographical location, the wind effects are more influential than earthquakes. In addition, the complexity of the effects of wind flow on the structure due to the interaction of the fluid flow and solid body results in serious damages to the structure by eliminating them. Considering the importance of the issue, the present study investigates the phenomenon of wind-induced vibration on high-rise buildings, taking into account the effects of vortices created by the fluid flow and the control of this phenomenon. To this end, the governing equations of the structure, the fluid flow and the tuned mass damper (TMD) are first introduced, and their coefficient values are extracted according to the characteristics of ACT skyscraper in Japan. Then, these three coupled equations are solved using a program coded in MATLAB. After validation of the results, the effects of wind loads are analyzed and considered with regard to the effects of vortices and the use of TMD, and are compared with the results of the state where no vortices are considered. Generally, the results of this study point out the significance of vibrations caused by vortices in construction of engineering structures as well as the appropriate performance of a TMD in reducing oscillations in tall buildings.

Vortex-induced vibration

Wind engineering

Tuned mass damper

10.1007/s40091-017-0174-9

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Citations (16)

FAULT DIAGNOSIS AND CLASSIFICATION OF DEEP GROOVE BALL BEARINGS USING WAVELET TRANSFORM AND ADAPTIVE NEURO-FUZZY SYSTEM

Yasaman Vaghei Anooshiravan Farshidianfar

Original Research Paper Received 06 July 2015 Accepted 09 September 2015 Available Online 28 October 2015 Today, fast and accurate fault detection is one of the major concerns in industry. Although many advanced algorithms have been implemented in the past decade for this purpose, they were very complicated or did not provide the desired results. Hence, in this paper, we have proposed an emerging method for deep groove ball bearing fault diagnosis and classification. In the first step, the vibration test signals, related to the normal and faulty bearings have been used for both the drive-end and fan-end bearings of an electrical motor. After that, one dimensional Meyer wavelet transform has been employed for signal processing in the frequency domain. Hence, the unique coefficients for each kind of fault were extracted and directed to the adaptive neuro-fuzzy system for fault classification. The intelligent adaptive neuro-fuzzy system was adopted to enhance the fault classification performance due to its flexibility and ability in dealing with uncertainty and robustness to noise. This system classifies the input data to the faults in the race or the balls of each of the fan-end and the drive-end bearings with specific fault diameters. In the final part of this study, the new experimental signals were processed in order to verify the results of the proposed method. The results reveal that this method has more accuracy and better classification performance in comparison with other methods proposed in the literature.

Robustness

Ball bearing

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