Folks, I'm using WB Mechanical v2022R2. I need to build a submodel from a larger model, which I know how to do for static loading. But is there a way to also run a response spectrum analysis on the submodel? And if so, will it properly account for the overall global influence of the larger model? Matt Ridzon, PE, MSME Sr. Engineering Analyst Email matt@prime-engineer.com<mailto:matt@prime-engineer.com> Mail 266 Main St, Burlington, VT 05401 Web www.prime-engineer.com<http://www.prime-engineer.com/> [A blue hexagon with white letters Description automatically generated] PRIME ENGINEERING LLC This message (including any attachments) may contain confidential, proprietary, privileged and/or private information. The information is intended to be for the use of the individual or entity designated above. If you are not the intended recipient of this message, please notify the sender immediately, and delete the message and any attachments. Any disclosure, reproduction, distribution or other use of this message or any attachments by an individual or entity other than the intended recipient is prohibited.

For submodeling with response spectrum analysis in ANSYS, I recommend taking a look at the methodology described in the following paper. This is the approach used by the ITER project to derive floor response spectra (FRS) for submodels: HeeJin Shim, Jaemin Kim, MunSeong Cheon, Sunil Pak, *A comparison study on the derivation of in-structure FRS during seismic events for application of ITER upper port 18,* Fusion Engineering and Design, Volume 191, 2023, 113771, ISSN 0920-3796, https://doi.org/10.1016/j.fusengdes.2023.113771. On Mon, Nov 17, 2025 at 10:41 AM Matthew Ridzon, PE via Xansys < xansys-temp@list.xansys.org> wrote: > Folks, > > I'm using WB Mechanical v2022R2. I need to build a submodel from a larger > model, which I know how to do for static loading. But is there a way to > also run a response spectrum analysis on the submodel? And if so, will it > properly account for the overall global influence of the larger model? > > Matt Ridzon, PE, MSME > Sr. Engineering Analyst > > Email matt@prime-engineer.com<mailto:matt@prime-engineer.com> > Mail 266 Main St, Burlington, VT 05401 > Web www.prime-engineer.com<http://www.prime-engineer.com/> > [A blue hexagon with white letters Description automatically generated] > PRIME ENGINEERING LLC > > > This message (including any attachments) may contain confidential, > proprietary, privileged and/or private information. The information is > intended to be for the use of the individual or entity designated above. If > you are not the intended recipient of this message, please notify the > sender immediately, and delete the message and any attachments. Any > disclosure, reproduction, distribution or other use of this message or any > attachments by an individual or entity other than the intended recipient is > prohibited. > > > _______________________________________________ > Xansys mailing list -- xansys-temp@list.xansys.org > To unsubscribe send an email to xansys-temp-leave@list.xansys.org > If you are receiving too many emails from XANSYS please consider changing > account settings to Digest mode which will send a single email per day. > > Please send administrative requests such as deletion from XANSYS to > xansys-mod@tynecomp.co.uk and not to the list

Hi Matt, I have done some submodeling in the past for a harmonic analysis problem. As you might already know, harmonic analysis has multiple load steps for a wide range of Frequencies. If I recall correctly, in my submodel I had to do the CBDOF interpolations for each load step from the global model where I had to take care of the and import both real and imaginary parts of the displacements. I also solved the submodel for all steps to establish strain vs frequency response (I was interested in the strain). I have also used the same procedure (with minor modifications) in PSD analysis for a random vibrations problem. You might want to do something similar. Best, Mohammad ===================================== Mohammad A Gharaibeh, Ph.D. Associate Professor Department of Mechanical Engineering The Hashemite University P.O. Box 330127 Zarqa, 13133, Jordan Tel: +962 - 5 - 390 3333 Ext. 4771 Fax: +962 - 5 - 382 6348 ===================================== On Mon, 17 Nov 2025 at 6:41 PM Matthew Ridzon, PE via Xansys < xansys-temp@list.xansys.org> wrote: > Folks, > > I'm using WB Mechanical v2022R2. I need to build a submodel from a larger > model, which I know how to do for static loading. But is there a way to > also run a response spectrum analysis on the submodel? And if so, will it > properly account for the overall global influence of the larger model? > > Matt Ridzon, PE, MSME > Sr. Engineering Analyst > > Email matt@prime-engineer.com<mailto:matt@prime-engineer.com> > Mail 266 Main St, Burlington, VT 05401 > Web www.prime-engineer.com<http://www.prime-engineer.com/> > [A blue hexagon with white letters Description automatically generated] > PRIME ENGINEERING LLC > > > This message (including any attachments) may contain confidential, > proprietary, privileged and/or private information. The information is > intended to be for the use of the individual or entity designated above. If > you are not the intended recipient of this message, please notify the > sender immediately, and delete the message and any attachments. Any > disclosure, reproduction, distribution or other use of this message or any > attachments by an individual or entity other than the intended recipient is > prohibited. > > > _______________________________________________ > Xansys mailing list -- xansys-temp@list.xansys.org > To unsubscribe send an email to xansys-temp-leave@list.xansys.org > If you are receiving too many emails from XANSYS please consider changing > account settings to Digest mode which will send a single email per day. > > Please send administrative requests such as deletion from XANSYS to > xansys-mod@tynecomp.co.uk and not to the list