Bahman Mehri

Learn More
The linear system of equations with dense coefficient matrix is very common in science and engineering. In this paper, a parallel algorithm based on Gram-Schmidt QR factorization method for the exact solution of dense system of linear equations is presented. Although several parallel approaches have been proposed to solve the system of linear equations(More)
Dynamic response of multispan viscoelastic thin beams subjected to a moving mass is studied by an efficient numerical method in some detail. To this end, the unknown parameters of the problem are discretized in spatial domain using generalized moving least square method (GMLSM) and then, discrete equations of motion based on Lagrange’s equation are(More)
Results regarding bounded ness, regularity and asymptotic behavior are important both theoretically. We investigate the behavior of a certain nth order nonlinear ordinary differential equation in regard with bounded ness, 2 L -regularity and asymptotic behavior of solutions. We show, using energy methods, that, under suitable conditions, every solution and(More)
This paper presents a numerical parametric study on design parameters of multispan viscoelastic shear deformable beams subjected to a moving mass via generalized moving least squares method (GMLSM). For utilizing Lagrange’s equations, the unknown parameters of the problem are stated in terms of GMLSM shape functions and the generalized Newmarkscheme is(More)
In this paper, A-factor circulant matrices with the structure of a circulant, but with the entries below the diagonal multiplied by the same factor A are introduced. Then the generalized rotation and hyperbolic matrices are defined, using an idea due to Ungar. Considering the exponential property of the generalized rotation and hyperbolic matrices, additive(More)
In this paper, A-factor circulant matrices with the structure of a circulant, but with the entries below the diagonal multiplied by the same factor A are introduced. Then the generalized rotation and hyperbolic matrices are defined, using an idea due to Ungar. Considering the exponential property of the generalized rotation and hyperbolic matrices, additive(More)