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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sladek, J. Sladek, V. Hellmich, Ch. Eberhardsteiner, J. |
| Copyright Year | 2006 |
| Abstract | The meshless local Petrov–Galerkin method is used to analyze transient heat conduction in 3-D axisymmetric solids with continuously inhomogeneous and anisotropic material properties. A 3-D axisymmetric body is created by rotation of a cross section around an axis of symmetry. Axial symmetry of geometry and boundary conditions reduces the original 3-D boundary value problem into a 2-D problem. The cross section is covered by small circular subdomains surrounding nodes randomly spread over the analyzed domain. A unit step function is chosen as test function, in order to derive local integral equations on the boundaries of the chosen subdomains, called local boundary integral equations. These integral formulations are either based on the Laplace transform technique or the time difference approach. The local integral equations are nonsingular and take a very simple form, despite of inhomogeneous and anisotropic material behavior across the analyzed structure. Spatial variation of the temperature and heat flux (or of their Laplace transforms) at discrete time instants are approximated on the local boundary and in the interior of the subdomain by means of the moving least-squares method. The Stehfest algorithm is applied for the numerical Laplace inversion, in order to retrieve the time-dependent solutions. |
| Starting Page | 323 |
| Ending Page | 333 |
| Page Count | 11 |
| File Format | |
| ISSN | 01787675 |
| Journal | Computational Mechanics |
| Volume Number | 39 |
| Issue Number | 3 |
| e-ISSN | 14320924 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2006-02-25 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Transient heat conduction problem Axisymmetric Anisotropic functionally graded materials Time-difference form Laplace transform Stehfest algorithm Meshless approximation Mechanics, Fluids, Thermodynamics Computational Science and Engineering Numerical and Computational Methods in Engineering Theoretical and Applied Mechanics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Ocean Engineering Computational Theory and Mathematics Mechanical Engineering Computational Mechanics Computational Mathematics |
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