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Keywords: partial differential equations
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Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Appl. Mech. November 2012, 79(6): 064505.
Published Online: September 17, 2012
.... 1817 – 1829 . 10.1016/j.ijengsci.2004.05.005 27 10 2011 23 03 2012 03 05 2012 17 09 2012 17 09 2012 partial differential equations boundary layers MHD flow over a rotating sphere suction and blowing homotopy analysis method Flows over rotating bodies...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 2012, 79(2): 021012.
Published Online: February 24, 2012
... the general string problem. Either we apply Eq. 1 directly which is straight forward, or we could attempt to solve Eq. 3 numerically which is actually quite complicated [( 19 )]. Firstly, Eq. 3 constitutes a coupled system of two nontrivial partial differential equations. Secondly, it would involve...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. September 2011, 78(5): 051016.
Published Online: August 5, 2011
... problem. In this study, we propose a method to simulate the two-phase flows in 1, 2 or 3 dimensions with the same system of partial differential equations. A one-pressure, conditionally hyperbolic model [1] was used and solved by a nonconservative finite volume scheme associated to a fractional step...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. September 2011, 78(5): 051002.
Published Online: July 27, 2011
... and computational fluid dynamics technology. The mathematical model for the two-phase gas-dynamical processes consists of a system of first-order, nonlinear coupled partial differential equations. An adaptive grid generation algorithm is developed to account for the expansion of the computational domain due...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. July 2011, 78(4): 041017.
Published Online: April 15, 2011
... partial differential equations vibrations elevator traveling cables slope angle integropartial differential equation flexible multibody dynamics differential-algebraic equations A typical elevator system, as shown in Fig. Schematic of an elevator system , has three types...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. July 2011, 78(4): 041003.
Published Online: April 12, 2011
... of external pressure and axial load are taken into account. A nonlinear hypothesis of deformation of a plane cross section is formulated. The system of partial differential equations of motion for a shell is derived on the basis of Hamilton’s principle. The system of equations is analytically solved...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. May 2011, 78(3): 031010.
Published Online: February 15, 2011
... account for discontinuities at each node. One method to solve the partial differential equations is to simultaneously discretize them both in time and space ( 10 ), leading directly to a time simulation analysis. This approach can be very costly. Common but less general approaches to solving...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 2011, 78(2): 021020.
Published Online: December 20, 2010
... and solve partial differential equations and the complexity therein. The elastodynamic responses of several general geometries and loading cases (interior, Neumann, and Dirichlet) are computed with the method and then compared with results generated using the earlier rectangular CA and finite element...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2011, 78(1): 011018.
Published Online: October 26, 2010
...Xiao-Dong Yang; Li-Qun Chen; Jean W. Zu The vibrations and stability are investigated for an axially moving rectangular antisymmetric cross-ply composite plate supported on simple supports. The partial differential equations governing the in-plane and out-of-plane displacements are derived...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2011, 78(1): 011020.
Published Online: October 26, 2010
...A. A. Jafari; S. A. Eftekhari In this paper, a new version of mixed finite element–differential quadrature formulation is presented for solving time-dependent problems. The governing partial differential equation of motion of the structure is first reduced to a set of ordinary differential...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. November 2010, 77(6): 061003.
Published Online: August 16, 2010
...Lixiang Yang; Yung-Yu Chen; S.-T. John Yu This paper reports the eigenstructure of a set of first-order hyperbolic partial differential equations for modeling waves in solids with a trigonal 32 symmetry. The governing equations include the equation of motion and partial differentiation...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. September 2010, 77(5): 051401.
Published Online: May 17, 2010
... of first-order, nonlinear coupled partial differential equations with inhomogeneous terms. The model poses an initial value problem with discontinuous initial and boundary conditions that arise due to the design complexity and nonuniformity of granular propellant distribution in the mortar tube...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. May 2010, 77(3): 031015.
Published Online: February 24, 2010
... by a set of nonlinear coupled partial differential equations (PDEs), which is obtained by using the modified Ginzburg–Landau theory. The Chebyshev collocation method is employed for the numerical analysis of the PDE model. An extended proper orthogonal decomposition is then carried out to construct a set...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 2010, 77(2): 021002.
Published Online: December 8, 2009
...-infinite stretching flat sheet are transformed into a partial differential equation with variable coefficients. An analytic technique for highly nonlinear problems, namely, the homotopy analysis method, is applied to give convergent analytical approximations, which agree well with the numerical results...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. July 2009, 76(4): 041007.
Published Online: April 22, 2009
... | < 1.0 from Fig. 11 when the effects of subharmonic resonance and combination additive resonance are combined. 25 01 2008 16 09 2008 22 04 2009 damping eigenvalues and eigenfunctions Lyapunov methods method of moments noise partial differential equations resonance...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. May 2009, 76(3): 031002.
Published Online: March 5, 2009
... processes. The system is assumed to operate beyond its stochastic instability threshold—although only slightly—and its nonlinear model is used accordingly. The analysis is based on the solution of the Fokker–Planck–Kolmogorov partial differential equation for the relevant stationary PDF of the response...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. July 2008, 75(4): 041022.
Published Online: May 19, 2008
... component of a complex combination of the midsurface normal displacement and its static-geometric dual, a stress function. However, an attempt to formally replace the Fourier index n by a partial derivative in the circumferential angle θ results in a partial differential equation, which is eighth order in θ...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. July 2008, 75(4): 041007.
Published Online: May 13, 2008
... theory, includes geometric imperfection and von Kármán-type geometric nonlinearity. The solutions to the governing nonlinear partial differential equations are sought using the multiterm Galerkin technique. The nonlinear equilibrium paths through limit points and bifurcation points are traced using...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Appl. Mech. January 2008, 75(1): 014504.
Published Online: January 16, 2008
...Mira Mitra; S. Gopalakrishnan In this paper, a 2D wavelet-based spectral finite element (WSFE) is developed for a anisotropic laminated composite plate to study wave propagation. Spectral element model captures the exact inertial distribution as the governing partial differential equations (PDEs...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. January 2008, 75(1): 011018.
Published Online: January 16, 2008
...F. G. O’Neill; R. D. Neilson A dynamic model of a diamond mesh cod-end subject to harmonic forcing is developed. The partial differential equations governing the displacements of the cod-end and the tension in the twine are first derived and then analyzed using the harmonic balance method...