Shock Response Spectra with ANSYS 1

[Tunalover]

Does anyone know if ANSYS will handle a SRS boundary condition? ANSYS Workbench?


Tunalover

 

[rickfischer51]

Do you mean single-point response spectrum analysis? If so, the answer is yes. See Chapter 6 in the Structural Analysis Guide.

Rick Fischer
Principal Engineer
Argonne National Laboratory

 

[Tunalover]

No. The term is Shock Response Spectra. A Shock Response Spectrum (SRS) is a graphical representation of an arbitrary transient acceleration input, such as shock in terms of how a Single Degree Of Freedom (SDOF) system (like a mass on a spring) responds to that input. It shows the peak acceleration response of an infinite number of SDOFs, each of which have different natural frequencies. Peak acceleration response is represented on the y-axis, and natural frequency of any given SDOF oscillator is shown on the x-axis.

Tunalover

 

[rickfischer51]

Duh. if I read your title... It's Friday.

I'm not familiar with this. I cant find that phrase in TFM. Try over on XANSYS.

Rick Fischer
Principal Engineer
Argonne National Laboratory

 

[Tunalover]

Rick,
The SRS is used to simulate explosive events. In rocket design (and equipment going on the structure of a rocket), aerospace companies often use it to simulate the shock effect due to explosive detachment of rocket stages. It's also used to simulate the explosion of ordnance on or near military fighting vehicles.


Tunalover

 

[Tunalover]

Rick Fisher,
What is TFM and what is XANSYS?


Tunalover

 

[petb]

Tunalover,

TFM is an abbreviation of "The Fine (or if someone hasn't bothered looking in it, perhaps the F#%&%£G, or flaming) Manual".

http://www.catb.org/jargon/html/R/RTFM.html

Xansys refers to a mailing list and an online community for users of ansys, see

http://www.xansys.org.

/PB

 

[petb]

Also, to respond to your original question. I really don't know if it is implemented. I don't know your application, but if it's shipboard equipment then maybe you can do it with ddam (peruse the fine manual). This and LMM is what we used when i worked at a naval shipyard some 5 years ago (naval surface ships). The submarine guys used LS-Dyna and USA (Underwater shock analysis).

/PB