I recall long ago, someone mentioned a way to do a simple, poor-mans impact analysis instead of doing an explicit LS-Dyna solution. It involved running a static solution in ANSYS using a unit load force or pressure applied in the manner you expect the impact to occur. Then you scale the results by ratioing the strain energy to the kinetic energy of the impacting object. It's conservative because it assumes all the energy of the impact is absorbed by the structure. Sounds reasonable and conservative, but I'm struggling to find a way to relate the strain energy of an arbitrary structure to the kinetic energy I calculate. Any ideas? Joseph T Metrisin Structures Lead Florida Turbine Technologies, Inc 1701 Military Tr. Suite 110 | Jupiter, FL 33458 USA +1 (561) 427-6346 Office | +1 (772) 834-4156 Mobile <mailto:Joe.Metrisin@kratosdefense.com> Joe.Metrisin@kratosdefense.com Visit our website: <https://kratosdefense.com/> https://kratosdefense.com Confidentiality Note: The information contained in this transmission and any attachments are proprietary and may be privileged, intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you received this communication in error, please delete the message and immediately notify the sender via the contact information listed above. _____

Hi Joe, I would recommend to have a look on my paper below in which we produce an “equivalent” static loading methodology for the impact problem of printed circuit boards. I’m not exactly sure if it exactly fits with your ambitions but you might find it useful. https://www.sciencedirect.com/science/article/abs/pii/S0026271422003663 Please let me know if you have any questions. Best, MG ===================================== 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 Thu, 16 May 2024 at 4:38 PM Joe Metrisin via Xansys < xansys-temp@list.xansys.org> wrote: > I recall long ago, someone mentioned a way to do a simple, poor-mans impact > analysis instead of doing an explicit LS-Dyna solution. It involved > running > a static solution in ANSYS using a unit load force or pressure applied in > the manner you expect the impact to occur. Then you scale the results by > ratioing the strain energy to the kinetic energy of the impacting object. > It's conservative because it assumes all the energy of the impact is > absorbed by the structure. > > > > Sounds reasonable and conservative, but I'm struggling to find a way to > relate the strain energy of an arbitrary structure to the kinetic energy I > calculate. Any ideas? > > > > Joseph T Metrisin > > Structures Lead > > > > Florida Turbine Technologies, Inc > > 1701 Military Tr. Suite 110 | Jupiter, FL 33458 USA > <https://www.google.com/maps/search/1701+Military+Tr.+Suite+110+%7C+Jupiter,+FL+33458+USA?entry=gmail&source=g> > > +1 (561) 427-6346 Office | +1 (772) 834-4156 Mobile > > <mailto:Joe.Metrisin@kratosdefense.com> Joe.Metrisin@kratosdefense.com > > > > Visit our website: <https://kratosdefense.com/> https://kratosdefense.com > > > > > > Confidentiality Note: > > The information contained in this transmission and any attachments are > proprietary and may be privileged, intended only for the use of the > individual or entity named above. If the reader of this message is not the > intended recipient, you are hereby notified that any dissemination, > distribution, or copying of this communication is strictly prohibited. If > you received this communication in error, please delete the message and > immediately notify the sender via the contact information listed above. > > _____ > > > > _______________________________________________ > 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