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Sixth M.I.T. Conference on Computational Fluid and Solid Mechanics

Jung W. Hong's picture

Dear Colleague,

The Sixth M.I.T. Conference on Computational Fluid and Solid Mechanics will be held in June 2011 at M.I.T.
The theme of the Conference is "Solids & Structures", and the topic is interpreted in a very broad way.

The Abstracts for full papers to be published in Computers & Structures are due January 31, 2010.
please see http://www.sixthmitconference.org

The conference proceedings will be published by Elsevier as a special issue of the journal "Computers and Structures",
and we are planning for this issue to be ready at the Conference in June 2011.

For the conference, I am organizing a special session named as "Coupling of Meshless Methods with Finite Element Methods in Multiphysics"
and the session will include various multiphysics such dielectric-mechanical coupling, FSI, and thermo-mechanical approaches
in addition to meshless methods.

If you want to join us, please contact me at jwh@egr.msu.edu.

 

Comments

Galerkin Finite Volume Method for 2D Numerical Analysis of Thermal Stress during the Construction of Roller Compacted Concrete DamsS.R. Sabbagh-Yazdi (SYazdi@kntu.ac.ir) and T. Amiri (amiri.civileng@gmail.com)Department of Civil Engineering, K.N.Toosi University of Technology, 1346 Valasr St. Tehran, Iran Abstract:The rapid concreting and low thermal conductivity of concrete increase the temperature of dam body internal zone and create thermal gradient between core and external sides of the dam. As a result of the produced non–uniform temperature field, tensile stresses may form in surface of the dam body. Therefore, concrete thermal cracking due to cement hydration in large concrete structures like Roller Compacted Concrete (RCC) dams is a well–known phenomenon which requires careful attention. In this research, the numerical solver for two dimensional thermal and structural analysis of the RCC dam during the construction period is developed. In this model, the two dimensional heat diffusion equation and stress – strain equilibrium Cauchy’s equations are sequentially solved on triangular elements. The both sets of governing equations are solved by application of the Galerkin Finite Volume Method (GFVM) on a single mesh linear triangular elements. The time stepping of the transient solution is performed via solution of the heat diffusion equation using global time stepping procedure. Having computed temperature field at every time step, the equilibrium stress–strain field are computed by iterative solution of Cauchy’s equation for each computational step. These computations are performed using the previously computed displacements as well as the thermal strains which are accumulatively calculated from the result of temperature analyses between two sequential stress-strain computation stages. New method which is suitable for unstructured meshes is purposed for imposing thermal gradients at boundary condition with arbitrary orientation. The accuracy of thermal stress analysis is evaluated by simulation of proper test case. Then, transient solution of temperature filed and consequent stress– strain field analysis during the construction of a sample RCC dam are performed considering the weight of concrete setting layers, cement hydration and thermal conduction between dam body and ambient environment. The abilities of the GFVM combined solver to determine the temperature and resulted stress-strain field variations at the dam vertical section during a construction scenario (which heat generation may cause critical situation) are presented.Keyword: Thermal Stress-Strain, Roller Compacted Concrete Dam, Galerkin Finite Volume Method, 2D Numerical Analysis  

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