I have a board with a red box inside. I am currently generating super elements, with the left end fixed and only subjected to one gravity. In the first load analysis step, I generated a super element and successfully referenced it in the second static load analysis step. The results obtained are the same as those obtained by directly using statics. However, I have some theoretical and practical questions that I would like to consult about
This is my testing model；
Q1：The condensation of internal super elements, the GUYAN method for statics and the CBN method for dynamics, is it just a lack of EIGIRL card definition at the software operation level
Q2：If I generate a super element in the first load analysis step and reference it in the subsequent second load analysis step, but gravity exists in my second load analysis step, will the super element also be affected by gravity? I tested it and it seems to be subject to gravity, but I'm afraid I might make a mistake and need to confirm；
Q3：How to generate pre-stressed super elements within the software, which means using the super keyword under the load step without the need for an additional assign card? For example, the unit in my red box can withstand a pressure of 0.05 MPa. How to set it for static and dynamic condensation?
Q4：Do super elements support TIE and FREEZE? For example, if the Elements in my red box are bound to other parts, I need to generate super elements for all of them. Is that okay?
Q5:For example, if I generate super elements in the first step and then use nonlinear statics conditions later on, do the super elements participate in each iteration in a condensed form? If that's the case, does it mean that using a large number of super elements can greatly accelerate computation speed;
Q6：If I have many unconnected super elements in one part, can I use the keyword 'super' under loadstep to output them all at once? Do we still need one output after another?
Q7：For generating super elements for Motionview, I use the T-mm-N-s unit system for finite element modeling, the kg-m-N-s unit system for Motionview, and the kg-m-N-s unit system for DTI_unit card. Is this correct? If it is correct, does it mean that Optistruct will convert the result to the corresponding unit system based on the DTI_unit setting?
