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SOL 103 Response dynamics Vs SOL 108/111 and SOL 109/112

Pioneer
Pioneer

Hi,

 

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.  

 

Thanks,

Ashwani.

2 REPLIES

Re: SOL 103 Response dynamics Vs SOL 108/111 and SOL 109/112

Siemens Phenom Siemens Phenom
Siemens Phenom

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.

Re: SOL 103 Response dynamics Vs SOL 108/111 and SOL 109/112

Pioneer
Pioneer

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??

 

Thanks,

Ashwani.