I have been investigating ceramics for high thermal loading and have come accross papers describing thermal shock resistance for laminate and fibrous monolith ceramics (from Clegg and Halloran). They seem to give good results, but I am unsure about there use in structural applications. Does...
We have run the numbers and the out of plane stresses were significantly greater (680 MPa versus 400 MPa) than the max principal stresses when run in 3D. The 3-D model does allow heat to escape from the ends of the bars, however the length of the bar is greater than 10x the thickness.
I am new...
Thank you for the responses. The sample has no mechanical loading and the thermal stresses are simply caused by the thermal gradient within (i.e. thermal shock). We chose to run a 3-D model with large elements to see if the stresses in the middle of the bar are roughly the same as the 2-D out...
I am trying to model thermal stresses in a rectangular ceramic bar and have used a 2-D model. Is the out-of plane stresses that were calculated valid, or do I need a 3-D model fo see what the stresses in the Z-axis are?
