cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted

Script to automate frequency dependent damping in Response simulation

For studies involving structural analysis of PCBs, it is typical to assume some dependency of damping to frequency (i.e ref.: Steinberg), specifically viscous damping coeficient being inversely proportional to square root of frequency (as shown in attached image). While damping coefficients can be edited manually in Response Simulation, doing that for a system analysis involving lot of modes is not practical. Is there readily available an NX Open script to automate that ? i.e script thatDampingCoef.JPG reads all modal frequencies in the solution file and then automatically populates damping coefficients in the response simulation view.

 

Along the same lines, is there a depository among knowledge bases where all automation tools like NX Open scripts available to customers are stored (along with some descriptions in scope and how to use it)

 

Thanks

Bulent

5 REPLIES

Re: Script to automate frequency dependent damping in Response simulation

Siemens Phenom Siemens Phenom
Siemens Phenom

Bulent,

 

See attached. It will read viscous and hysteretic damping values from a csv table and apply them to the modes in a response simulation.

Re: Script to automate frequency dependent damping in Response simulation

Thanks Jim. This is quite helpful.

Is there a 'script library' online we can browse for useful material like this for our workflows ?

Re: Script to automate frequency dependent damping in Response simulation

Siemens Phenom Siemens Phenom
Siemens Phenom

Bulent,

 

The PLM World web site hosted one for years. When they decided to shut down their forum, the repository was lost as well.

 

Siemens PLM is working on adding a repository to this community site, but it is not yet in place.

 

 

Re: Script to automate frequency dependent damping in Response simulation

Phenom
Phenom

Jimb

 

Just had a go at testing the offered script and I get an error msg – No coded in UNF-8 format- when trying to launch the .dll

 

Is there a way around that?

 

Thanks

Regards

Production: NX9.0.3.4, NX10.0.2.6
Development: VB.NET (amateur level !)

Re: Script to automate frequency dependent damping in Response simulation

Phenom
Phenom

full error msg is:  The file is not encoded in valid UTF-8 and contains some characters that are not in the locale character set

 

syslog for jimB attached

Production: NX9.0.3.4, NX10.0.2.6
Development: VB.NET (amateur level !)