Looks like I found it, "Static, Full Harmonic, Full Transient" analysis for SOLID226, link My current issue is that the solid, when rotated via a Body-Ground Joint and a Joint Load with constant velocity, starts to cool down. What is it caused by and how could this be avoided or controlled?
More quotes from the doc "For example, KEYOPT(1) is set to 11 for a structural-thermal analysis (structural field key + thermal field key = 1 + 10). For a structural-thermal analysis, UX, UY, and TEMP are the DOF labels and force and heat flow are the reaction solution." This does not appear related to the issue.