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thernal expansion strain

thernal expansion strain

thernal expansion strain

(OP)
Hello,

I am having a problem with a simple 2D model: I submit a square plate with an expansion coefficient alpha=10^-6 to a uniform temperature T=50. I use only a ENCASTRE boundary condition on one corner. When I ask Abaqus for strain, it gives me E11=E22=70*10^-6. I was expecting it to be alpha*T=50*10^-6. ABAQUS says that my thermal strain ETH is 50*10^-6 but it says that there is also an elastic strain EE=20*10^-6

Does anyone have an idea to explain this result? Where does EE come from?

Thank you in advance

Paul

RE: thernal expansion strain

I think I know whats going on. What element type is used?

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