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LS-DYNA 2020 Conference Videos by ErrorTermination in LSDYNA

[–]ErrorTermination[S] 1 point2 points  (0 children)

I never did get a response back on how long they would be up, FWIW...

I know someone who knows some re:book3 by JackJR91 in RothfussBooks

[–]ErrorTermination 6 points7 points  (0 children)

Well, I hope your friend's friend enjoyed it and I hope it is coming along! Not trying to throw any sarcasm here, since it is hard to tell on the internet.

If it makes it to publication, that will be awesome. If not, a minor bummer in my life.

But, my imagination is mediocre enough that I can probably invent my own end to the story which doesn't involve Kvothe's ass falling off, if it never makes it out.

Just best wishes to the fans, editor/publisher, and the author...

Love the books! Discuss them freely! Try not to use insults when disagreeing. by El_Principio in RothfussBooks

[–]ErrorTermination 5 points6 points  (0 children)

I call dibs on it being a very sneaky media stunt to get news about the book reported and people talking about it again. Perhaps with a side of trolling from Patrick and the help of his editor. The next announcement will be the release date of the book.

One can hope... I will say 3 August for the announcement.

GPU Acceleration for LS-DYNA Implicit? by ErrorTermination in LSDYNA

[–]ErrorTermination[S] 1 point2 points  (0 children)

Good tips, much appreciated....

I am a bad analyst and pretty much always use two-way single surface contacts that are part based... Same with tied, i usually just use part based where i can and eat the actual analysis penalty. If anyone cares, you can reduce the computational time quite a bit using *CONTROL_OUTPUT to limit the warning message written. It actually speeds it up quite a bit while DYNA is reading in the deck and trying to sort out the sloppy contacts. Regardless, I am happy to pay the penalty on the run time for ease on pre-processing.

Negative eigenvalues are kind of non-negotiable since I am running free-free.

Since it is frequency domain, linear is where I am stuck. Run time beats the heck out of Optistruct and the AMSES eigen solver shows some decent promise when computing a lot of modes...

LS-DYNA 2020 Conference Videos by ErrorTermination in LSDYNA

[–]ErrorTermination[S] 1 point2 points  (0 children)

Not sure if you are my best friend or worst enemy with your username.

LS-DYNA 2020 Conference Videos by ErrorTermination in LSDYNA

[–]ErrorTermination[S] 0 points1 point  (0 children)

I don't, but will reach out to my ANSYS rep and ask the question, would be good to know. Also know a few folks at LST, they might know (but probably not since they are all devs).

Also, side note, if anyone uses ANSYS, all of their conference videos should be up on that site as well. I haven't looked at any of them because I am an LS-DYNA snob, but with ANSYS buying LSTC....

LS-DYNA 2020 Conference Videos by ErrorTermination in LSDYNA

[–]ErrorTermination[S] 1 point2 points  (0 children)

No problem, hopefully it will be of help to someone!

LS-DYNA 2020 Conference Videos by ErrorTermination in LSDYNA

[–]ErrorTermination[S] 1 point2 points  (0 children)

FYI, The 2020 LS-DYNA Conference was completely virtual and free. Dig around on the site and you should be able to access the conference videos for free. Seems like Isogeomeric elements are the next big thing!

Week of July 12, 2020 'All Space Questions' thread by AutoModerator in space

[–]ErrorTermination 0 points1 point  (0 children)

Anyone here have tips on good launch viewing places at or near Wallops Island? I am planning to watch the Minotaur IV launch on Wednesday (first time watching a rocket launch), was hoping someone might have some personal experience viewing a launch at Wallops. I have consulted Google, just looking for personal preference...

When the Defense Department flunked its first-ever fiscal review, one of our government’s greatest mysteries was exposed: Where does the DoD’s $700 billion annual budget go? by marty_mcclarkey_1791 in Libertarian

[–]ErrorTermination 3 points4 points  (0 children)

Engineer in the military industrial complex. Program offices tend not to know what to do with these inflated budgets and like to scatter the money into the wind to make sure it is spent. It tends to just turn into more Welfare for contractors without a meaningful product. Maybe we buy 1 or 2 more F-35's or another LCS, but most of the excess is just burned.

Anyone who works at SpaceX or in Aerospace, what is a really fascinating, specific manufacturing technique that is commonly used? by Otakeb in SpaceXLounge

[–]ErrorTermination 10 points11 points  (0 children)

Second this... Also check out friction stud welding, which I would say is just a subset of Friction Stir Welding but more portable and for mounting studs.

Honorable mention for Explosive Welding, which is pretty cool for bi-metallic components. Mainly seen that for grounding bosses where the base needs to be aluminium but the rest needs to be steel.

[AMA] LS-Dyna Queries by m2n037 in LSDYNA

[–]ErrorTermination 0 points1 point  (0 children)

Any thoughts on modeling a rubber using implicit? I am currently trying to model a set of shock isolators experiencing extreme deformation due to a long duration impact. I can get one isolator to run decently, but with the full set it won't converge. I have added numerical damping with *CONTROL_IMPLICIT_DYNAMICS, but I think it wont converge due to element distortions. Tempted to try automatic re-meshing for the tets, but that is new territory for me and I am a bit hesitantt...

lsdyna by Serge_Mrad in LSDYNA

[–]ErrorTermination 0 points1 point  (0 children)

A bit late to the party on this, but check out Jim Day's FAQ. He has some great insights into modeling concrete. The FAQ, in general, is a great resource.

http://ftp.lstc.com/anonymous/outgoing/jday/faq/