This type of error occurs usually when u mesh prior to material definition.

The material properties must be created before you mesh the geometry.

Dera Umer Farooque:

Thank you. But I meshed the model after assigning the materials. And still I ahve the same problem. Any other alternative clues that you can propose. I have annexed my model here. Please you try and see if you can fix it. Thanks

Hi,

 I would try to lower the "End Time" parameter in the Analysis Settings...Choose  for example 5e-4 s. 

Hi Lorenzo:

Thank you for your time. I tried as you suggested but no luck. I am attaching my model herewith. Can you please run this and see in your machine and see. I would be greatful if you could do this along with some other alternative you may have.

Thank you once again

Hi Lorenzo:

Sorry I added a wrong model. The correct one is this

Hi Lorenzo:

Thank you very much my dear. I tried once again with your suggestion and it worked finally. I really see that our Research gate network helps each other very much and save lot of time and it also prevent us from getting into unnecessary troubles etc. You are my hero today!!!!!!!!!!!!!!!!!

Thank you once gain

Cheers :)

Hi Lorenzo:

can I have a your personal e mail id so I can post any queries direct to you. Please e mail me on [email protected]

Thanks once again

Hi,

Sure.

Lorenzo,

Could you pls repeat once again? i'am also facing the same issue.

looking forward.