Transient Thermal Analysis- Ansys APDL Help

[deveshp1]

Hello All,

I have to do a transient analysis of thin composite film. Following are the requirements:

1. Time t=0 to t=0.01, Initial condition of Temperature=300 K.
2. Time t=0.01 to t=0.05, Temperature=505 K.
3. Run the analysis from t=0.05 until a stable solution is obtained.

I tried to read through the help file for load step options but couldn't understand where could i define such parameters.

Please help!

Thanks in Advance

Devesh

 

[Gokul43201]

Why would the first "initial" temperature affect the evolution of the system after it has been reset with the second "initial" temperature? Perhaps I do not understand your description correctly. Are these initial conditions applied to the same regions?

 

[deveshp1]

Thank you for the reply.

Yes, The region is originally at ambient conditions and at time t=0.01 sec the it is subjected to a temperature of 505 K for the next 0.04 sec

 

[Gokul43201]

What do you mean by "subjected"? Is it placed in an atmosphere of 505K for 0.4s? Or something else? And what happens after that?

One can make best progress on a discussion forum by providing as many relevant details as possible at the very beginning. That way it minimizes the time lost in going back and forth, trying to understand the problem.

 

[deveshp1]

I am sorry for the insufficient details. Yes, the model is kept in the environment of 505K for a period of 0.04 sec and then the atmosphere is suddenly removed. I have to run the analysis until a stable solution is obtained.

Also I have one more problem. I have to model 4 layers of composite materials out of which 3 layers are made of shell elements and 1 layer of solid element. All the layers have different material properties and thicknesses. How can I do that? All the layers have lXb the same.

Thanks for your help!