چکیده مقاله
One of the major concerns with Isogeometric analysis is finding an efficient approach to impose essential boundary conditions EBCs Non interpolating nature of NURBS leads to the non satisfaction of Kronecker delta property therefore, imposing EBCs is not a straightforward task The purpose of this paper is using a two step method to impose EBCs for improving the accuracy of solution field in transient heat flow within two dimensional region In the proposed approach, The EBCs are defined on Dirichlet boundary as determined temperatures and independent of time In the first step, EBCs are built into the variational formulation weakly, choosing weight function appropriately In the second step, with fixed condition, the system of equations is adjusted appropriately For investigation of the proposed approach, two numerical examples have been performed The results demonstrate significant improvement in accuracy and rate of convergence in comparison with direct imposition of essential boundary condition and finite element method
کلیدواژهها
نویسندگان
Ebrahim izadpanah
MS student in structural engineering, Bahonar university of Kerman
Saeed shojaee
Assistant professor, department of civil engineering, Shahid Bahonar university of Kerman
Mostafa ghelichi
MS student in structural engineering, Kerman Graduate University of Technology
شیوه ارجاع
izadpanah, Ebrahim and shojaee, Saeed and ghelichi, Mostafa,1391,Imposition of essential boundary condition in heat conduction problem based on Isogeometric analysis,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
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