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Hi, I am doing a heat transfer analysis (transient) with OptiStruct and I want to apply a distribution of temperatures to a solid face. I usually use TLOAD1 cards as DLOAD in the loadstep, and SPCD in the EXCITEID field of the TLOAD card. I know how to apply SPCD constraints when the temperature is the same for all nodes of the face, but I have a .txt file with different temperature values of each node and I don't know how to proceed. What is the procedure to solve this problem? Thanks in advance!