I want to find the thermal stress due to non uniform temperature distribution. Please suggest me how to find it.
Dear Reddy
Are you using ansys or written your coding? Is it composite or metal?
Write your problem in detail.
Dear Reddy,
First you need to know what your project and according to the same use solid element before analyzing. Use FEM to model, verify and simulate the zone in which it is affected by which mode of heat transfer air temperature or solar radiation for measurement of non uniform temperature distribution. Finite element (FE) model can be used to analyze the temperature distribution under the sunshine (choose external and internal boundary condition). Use Solid 40, Solid 95 or other element according to your project.
Thermal stresses, resulting from non-uniform temperature distribution in a solid body are frequently an important factor in determining material life. To determine thermal stresses when an incompressible non-homogeneous solid sphere can be exposed to a sinusoidal temperature field (you can assume a large diameter tank or drum for your study). The sinusoidal function is the non uniform boundary conditions can increase the heat transfer rate. The temperature field may be symmetrical about the centre of the sphere, temperature field analysis in case of empty tank, full tank, analysis of temperature difference and first try to find that the temperature of the outer surface of the wall is mainly affected by which mode of heat either it is solar radiation or air temperature. . Numerical Simulation of tank could be used after Model Establishment and verification for analysis of temperature effect.
Refer:
https://www.hindawi.com/journals/mpe/2018/5304974/
Ashish
for statically determinate structures thermal effect doesn't change internal forces and stresses. however, for statically indeterminate structures you can solve it by manual traditional methods or by modelling using SAP 2000.
regards.
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