scispace - formally typeset
Search or ask a question
Author

Hamidreza Mohammadi Daniali

Bio: Hamidreza Mohammadi Daniali is an academic researcher from Babol Noshirvani University of Technology. The author has contributed to research in topics: Parallel manipulator & Physics. The author has an hindex of 18, co-authored 50 publications receiving 1118 citations. Previous affiliations of Hamidreza Mohammadi Daniali include McGill University & University of Mazandaran.


Papers
More filters
Journal ArticleDOI
TL;DR: He's homotopy perturbation method is employed to compute an approximation to the solution of the system of nonlinear ordinary differential equations governing on the problem to show the reliability and simplicity of the method.

134 citations

Journal ArticleDOI
TL;DR: In this paper, He's variational iteration method (VIM) is applied to nonlinear oscillators with discontinuities and the obtained approximate solutions are valid for the whole solution domain and the approximations are uniformly valid not only for small parameters, but also for very large parameters.

121 citations

Journal ArticleDOI
TL;DR: The variational iteration method is employed to compute an approximation to the solutions of the systems of nonlinear ordinary differential equations governing on these problems of prey and predator.

115 citations

Journal ArticleDOI
TL;DR: In this article, an optimization method is proposed to alleviate the undesirable effects of joint clearance in a sliding-crank mechanism, where the main consideration is to optimize the mass distribution of the links of a mechanism to reduce or eliminate the impact forces in the clearance joint.

91 citations

Journal ArticleDOI
TL;DR: In this paper, the behavior of a crank-slider mechanism with single and multiple clearance joints is analyzed using Poincare maps and bifurcation diagrams, and the effects of joint friction on dynamical behavior and nonlinear response of the mechanism are investigated.
Abstract: In the current study, the behavior of a crank–slider mechanism with single and multiple clearance joints is analyzed. For this purpose nonlinear dynamics of the system are discussed, using Poincare maps and bifurcation diagrams. Subsequently, the effects of joint friction on dynamical behavior and nonlinear response of the mechanism are investigated. Afterward, a control scheme providing continuous contact in joints, with the aim of maintaining a more stable behavior, is proposed. The control scheme is easy to apply and, since continuous contact between bodies in joints is established, several undesired effects normally caused because of clearance joints are prevented or reduced. Also the limitation of the proposed control method is investigated.

70 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: To the best of our knowledge, there is only one application of mathematical modelling to face recognition as mentioned in this paper, and it is a face recognition problem that scarcely clamoured for attention before the computer age but, having surfaced, has attracted the attention of some fine minds.
Abstract: to be done in this area. Face recognition is a problem that scarcely clamoured for attention before the computer age but, having surfaced, has involved a wide range of techniques and has attracted the attention of some fine minds (David Mumford was a Fields Medallist in 1974). This singular application of mathematical modelling to a messy applied problem of obvious utility and importance but with no unique solution is a pretty one to share with students: perhaps, returning to the source of our opening quotation, we may invert Duncan's earlier observation, 'There is an art to find the mind's construction in the face!'.

3,015 citations

Journal ArticleDOI
Ji-Huan He1
TL;DR: In this article, an elementary introduction to the concepts of the recently developed asymptotic methods and new developments is given, giving an intuitive grasp for Lagrange multiplier, calculus of variations, optimization, variational iteration method, parameterexpansion method, exp-function method, homotopy perturbation method, and ancient Chinese mathematics as well.
Abstract: This review is an elementary introduction to the concepts of the recently developed asymptotic methods and new developments. Particular attention is paid throughout the paper to giving an intuitive grasp for Lagrange multiplier, calculus of variations, optimization, variational iteration method, parameter-expansion method, exp-function method, homotopy perturbation method, and ancient Chinese mathematics as well. Subsequently, nanomechanics in textile engineering and E-innit y theory in high energy physics, Kleiber’s 3/4 law in biology, possible mechanism in spider-spinning process and fractal approach to carbon nanotube are briey introduced. Bubble-electrospinning for mass production of nanob ers is illustrated. There are in total more than 280 references.

475 citations

Journal ArticleDOI
TL;DR: This paper shows that the exact analytical solution of the Susceptible-Infected-Recovered (SIR) epidemic model is obtained in a parametric form, and that the generalization of the SIR model, including births and deaths, can be reduced to an Abel type equation.

385 citations

Journal ArticleDOI
TL;DR: The solution of a delay differential equation is presented by means of a homotopy perturbation method and then some numerical illustrations are given to reveal that the proposed method is very effective and simple to perform.

281 citations

Journal ArticleDOI
TL;DR: A comprehensive survey of the literature of the most relevant analytical, numerical, and experimental approaches for the kinematic and dynamic analyses of multibody mechanical systems with clearance joints is presented in this review.

271 citations