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Mohammad H. Fatehi
Islamic Azad University
9Publications
3H-index
22Citations
Publications 9
Newest
#1Mohammad H. Fatehi (IAU: Islamic Azad University)H-Index: 3
#2Mohammad Eghtesad (Shiraz University)H-Index: 17
Last.Ali A. Fatehi (IAU: Islamic Azad University)H-Index: 1
view all 4 authors...
A flexible-cable overhead crane system having large swing is studied as a multi-degree underactuated system. To resolve the system dynamics complexities, a second order singular perturbation (SP) f...
2 CitationsSource
This study presents crack initiation, propagation and coalescenceat or near pre-existing open cracks in a numericalmodel under Brazilian test. Firstly, Particle Flow Code intwo dimensions (PFC2d) was calibrated with respect to thedata obtained from experimental laboratory tests to ensurethe conformity of the simulated numerical models response.Brazilian discs contain one, two, three, four, and five parallelcentred cracks (45° to the horizontal) under compressiveline loading. Models containing tw...
4 CitationsSource
#1Mohammad H. Fatehi (IAU: Islamic Azad University)H-Index: 3
#2Mohammad Eghtesad (Shiraz University)H-Index: 17
Last.Roya Amjadifard (Kharazmi University)H-Index: 4
view all 3 authors...
This paper aims to develop an advanced control system for an overhead crane with transverse vibrations of flexible cable while considering large angle of the cable swing. The control objective is to move the payload to a desired position and at the same time, to reduce the payload swing and to suppress the cable transverse vibrations only by applying a directional (horizontal) driving force to the trolley. The crane system with cable vibrations and large swing angle is categorized as a multi-deg...
4 CitationsSource
In this paper a novel dynamical model will be developed for an overhead crane with transverse vibrations of flexible cable while considering large angle of the cable/payload swing. The major problem addressed is expressing the dynamic interaction between the cables and other elements in the crane system which demands investigation into boundary induced cable vibrations and large swing angle. The developed model is achieved as an ODE model and it is appropriate enough to design suitable control s...
1 CitationsSource
#1Mohammad H. Fatehi (IAU: Islamic Azad University)H-Index: 3
#2Mohammad Eghtesad (Shiraz University)H-Index: 17
Last.Roya Amjadifard (Kharazmi University)H-Index: 4
view all 3 authors...
This paper deals with modelling and control of an overhead crane with a flexible cable. The developed dynamical model includes both transverse vibrations of the flexible cable and large swing angles of cable while the trolley is moving horizontally. To carry out the modelling, Rayleigh-Ritz discretization method is used to achieve an ordinary differential equation (ODE) model for transverse deflection of the cable with finite generalized degrees of freedom. Using the Euler–Lagrange formulation, ...
3 CitationsSource
#1Ali Reza Taheri (IAU: Islamic Azad University)H-Index: 9
#2Mahdi Aliyari Shoorehdeli (KNTU: K.N.Toosi University of Technology)H-Index: 17
Last.Mohammad H. Fatehi (IAU: Islamic Azad University)H-Index: 3
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This brief presents a X–Y pedestal using the feedback error learning (FEL) controller with adaptive neural network for low earth orbit (LEO) satellite tracking applications. The aim of the FEL is to derive the inverse dynamic model of the X–Y pedestal. In this brief, the kinematics of X–Y pedestal is obtained. To minimize or eliminate the backlash between gears, an antibacklash gearing system with dual-drive technique is used. The X–Y pedestal is implemented and the experimental results are obta...
6 CitationsSource
#1Mohammad H. FatehiH-Index: 3
#2Arash Pashapour (YU: Yazd University)
Last.Javad GholamnejadH-Index: 9
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Most of the Earth's crust contains fluids, and fractures are common throughout the upper part. They exist at a wide range of scales from micro-fractures within grains to major faults and shear zones that traverse the crust. In this paper, the stress-dependent permeability in fractured rock masses have been investigated considering the effects of nonlinear normal deformation and shear dilation of fractures using a twodimensional distinct element method program, UDEC. A new analytical and numerica...
Source
#1Mohammad H. Fatehi (IAU: Islamic Azad University)H-Index: 3
#2Ahmad Reza Vali (IAU: Islamic Azad University)H-Index: 7
Last.Jafar Zarei (SUTECH: Shiraz University of Technology)H-Index: 15
view all 5 authors...
1 CitationsSource
#1Mohammad H. Fatehi (IAU: Islamic Azad University)H-Index: 3
#2Ahmad Reza Vali (IAU: Islamic Azad University)H-Index: 7
Last.A. A. Fatehi (IAU: Islamic Azad University)H-Index: 1
view all 4 authors...
1 CitationsSource
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