Can someone clarify what's the difference between SOL 103 response dynamics Vs SOL 108/111 for Frequency response and SOl 109/112 for Transient response.
I saw tutorials on NX help for SOL 103 response dynamics, that shows how to perform frequency response, transient response and random analysis using SOL 103 response dynamics. If these things can be done using SOL 103 response dynamics then why do we have SOL 108/111 for frequency response and SOL 109/112 for transient response.
Are they different in some form compared to SOl 103 response dynamics or do they perform the same function.
SOL 103 Response Dynamics does not actually compute any response. There are no excitations defined. The solution merely computes modes and other matrices that for use in Simcenter Response Dynamics.
SOL 108/109/111/112 do have excittions defined and do compute a response.
Simcenter Response Dynamics provides a more graphically interactive workflow. For example, you can compute frequency responses at a few locations, then compute stresses for elements in an area of interest at a particular frequency that you pick off the frequency response plot. In the Nastran solutions, all output needs to be requested prior to the solution.
Hi, Thanks for the response.
The tutorial that I saw, did a transient event and random event using Response Simulation. So a transient event was created under response simulation group. An excitation was defined as an enforced motion that varied as a sine wave using XY function tools with a scale factor. The results they got was nodal acceleration function and also elemental stress at nodes and elements. Contour plots for stress were also developed at nodes.
Same was for a random event under SOL 103 response dynamics in which input was a frequency varying enforced motion and a random type event was created. Again output had nodal and elemental functions that have displacement and stress as a function of frequency. So output response at particular frequencies and locations were available in that tutorial also without using SOl 108/111 or 109/112.
Reference: Response simulation example in NX posted at Learning advantage centre.
Also is Simcentre same as NX 12 platform or is it different in terms of using these different solvers??
I asked myself the same question.
I also saw the tutorials you mentioned concerning SOL 103 Response Dynamics.
However, I noticed that on the Learning Advanced Center there are no examples / tutorials for the the SOL 109/112 or for the SOL 108/111.
Does someone can suggest a tutorial to learn on NX Nastran 12 about the usage of these solutions and the difference between them and SOL 103?
SOL103 is Nastran's Modal Analysis Solution. "SOL103 Response Dynamics" is a modified version of SOL103 with added output to perform downstream response analysis, either with Simcenter Response Dynamics or MAYA SATK. In other words, it outputs the necessary modal data for calculating sine, random, shock, ...
SOL108/109/111/112 are all-encompassing solutions. At the end of the run, you end up with response results.
Simcenter Response Dynamics and MAYA SATK are both far more interactive (and faster) than using straight Nastran, but this comes at a cost.
There should be models and documentation that ships with NX Nastran.