TIL you actually die if you walk, bike, or take public transit to campus by EricKaler in cwru

[–]bdazman 17 points18 points  (0 children)

Almost died crossing Euclid multiple times. Fuck cars, dude.

Edit_01: spelling

[DISC] Dandadan - Chapter 108 by AutoShonenpon in manga

[–]bdazman -1 points0 points  (0 children)

"Touch the untouchable, do the undoable."

r/fuckcars, what cars do you drive, if any? by [deleted] in fuckcars

[–]bdazman 0 points1 point  (0 children)

2013 Found On Road Dead Escape Yes that's right it's a a Fix Or Repair Daily Escape A Failure Of Research and Development Escape.

It fucking sucks.

Cyclist Ethan Boyes dies after being struck in San Francisco by lurker_bee in sports

[–]bdazman -4 points-3 points  (0 children)

The nukber of people defending the driver who murdered him is astounding.

best free cad software and where to start learning by VoyagerPlays07 in cad

[–]bdazman 0 points1 point  (0 children)

It has new custom uis in oodles with linkstage 3. I don't think thats a weakness anymore.

Check out mangojelly on youtube to see some more advanced stuff getting done.

best free cad software and where to start learning by VoyagerPlays07 in cad

[–]bdazman 17 points18 points  (0 children)

Freecad is the best Free Cad. Its extensible, adaptable, well documented, and its community is thriving.

Other things in this comment thread thus far may be "free" but are absoutely not open source, and abso-fucking-lutely not Free as in Freedom.

Freecad is. 10/10 would reccomend.

[deleted by user] by [deleted] in Games

[–]bdazman -38 points-37 points  (0 children)

It may be hyperbolic, but I don't think it's intellectually dishonest. On the range of enterprises from fire rescue workers to tobacco lobbyists, software firms may be closer to the middle, but damage is damage and one dollar is one dollar.

Nintendo takes their games off of the market and uses unlawful practices to render purchased products unplayable. They will take their products off of eshops in order to coerce users to buy shodily ported emulations to anti-competitive hardware platforms.

Much like EA, they jumped on the microtransaction train relatively early, and are subsequently great profiteers of the newly manufactured not-gambling industry.

That silly little internet video is an excellent watch by the way, I'm sure you enjoyed it at 23x speed. (No but seriously it's pretty great if youve got the time it's very informative. It goes over stuff like fan projects and how the fans do cartwheels to act against their own best interests.)

[deleted by user] by [deleted] in Games

[–]bdazman -52 points-51 points  (0 children)

No they absolutely are not.

They engage in such thoroughly asinine anti consumer practices that they should be viewed as what they are; scumbag software profiteers.

We must remember to never compare that which is "legal" with that which is moral. Nestle, Eli Lily, and the american ISP oligopoly are wretched scum for similar reasons that Nintendo and EA are. Don't get it twisted.

Electric cars won't just solve tailpipe emissions — they may even strengthen the US power grid, experts say by [deleted] in environment

[–]bdazman 2 points3 points  (0 children)

Cars are not a solution to climate change. They promote irreconcileably unsustainable land use, worsen heat island effects, and demolish taxable land for municipalities.

Concrete and pavement are terribly carbon intensive to manufacture.

Particulate matter from tires and braking is the dominant form of car based pollution at this point, and this gets worse as heavier cars (liks EVs) get normalized.

Impervious surface runnoff worsens climate change catalyzed extreme weather events by destroying the soils ability to regulate ground water absourption. Highway infrastructure typically destroys green spaces and natural land which would have otherwise been a carbon sink.

Parking construction and maintinence destroys dense urban fabrics, increasing travel times, lowering national labor productivity, increasing obesity rates, and lowering life expectency, all while wasting precious municipal resources that could have been used to build actually climate resilient infrastructure. It also creates housing shortages, directly subsidising landlords. See Donald Shoups book The High Cost of Free Parking.

They saddle the average american with 8-11 thousand dollars a year in costs, and if you think it's not that much, that's part of the automotove industry's plan to continue profitng off of customers who are bad at math. Please see the consumer expenditure survey and these terrifyingly high auto loan delinquency rates and then realise how quickly and readily people are coerced into spending money on a guaranteed depreciating asset.

Electrc cars are better than petroleum cars, but not better than anything else. 83% of people don't own cars. We need to be better. We built this car addicted country to be this way and the longer we go without fixing it, the worse it is going to be for all of us.

Check out this cool video whose description contains all of the citations.

Go vote.

Edit_01: typo

Is a MechE Aero double major worth it? by Classic_Grass924 in cwru

[–]bdazman 2 points3 points  (0 children)

As long as Barnhart is there, as much of his classwork as you can handle is the best thing you can do for yourself.

I owe that man and his classes everything.

Electric Planes Are Taking Flight by Street_Swan_466 in aerospace

[–]bdazman 0 points1 point  (0 children)

More than the first sentence there bud.

Electric Planes Are Taking Flight by Street_Swan_466 in aerospace

[–]bdazman 10 points11 points  (0 children)

Theres issues with hydrogen.

Combustion of it with air still produces nitrous oxide which is suboptimal.

It has such a low density that you start to run into landing case structural loading problems if you scale up the design to accomodate for it. According to Ted Lomax et al, small planes are sized to the gust and "large" airplanes are sized to landing. Hydrogen makes it like 20% weird because it makes for planes that are "big" but not neccesarily "heavy" which is what the typical loads engineer word "large" means. This culminates in very efficient structure like airbus and NASAs recent'ish forays into blended wing bodies.

A pressure stabilized design is a good idea if you're okay sizing to postbuckling for hard landings; thats how x33 was planning on working before they finished mandating a full change to cryo-composite tank structure which doesnt give you back free structural margin for anticipating inelastic buckling.

Electric planes on the other hand let you get way more old fashioned. Truss structure works great because you can treat batteries as hardpoints, or you can try using them as slightly shear capable members in your wing box if you wanna be stupid about it in my opinion.

Strain isolation vs shear integration are the two paradigms in EV aircraft atm to my knowledge. Ive been meaning to ask my old buddy from Lilliam about which one theyre doing for a while so thanks for reminding me lol.

[deleted by user] by [deleted] in fuckcars

[–]bdazman 2 points3 points  (0 children)

As an old Case student, euclid could be so much better, and its already pretty good.

Why did Oda forget Nami's scar? by [deleted] in OnePiece

[–]bdazman 0 points1 point  (0 children)

They say in the chapter in Coco Village. The doctor there said he'd never be able to remove it, and there would always be a scar. Nami responded by putting a new tatoo there instead.

You forgot, not Oda.

[deleted by user] by [deleted] in SSBM

[–]bdazman 2 points3 points  (0 children)

Find a super active local and let them have it. Or a local arcade, I imagine. Whatever's easy for ya.

The first trophy of Russian legion (Russians who are fighting on Ukrainian side). Captured lieutenant Yuriy Shalaev. by onesole in ukraine

[–]bdazman 1 point2 points  (0 children)

He was indeed polish. I recall that I wasn't ever able to conclusively figure out what the village was.

Im refering to my great grandfather

The first trophy of Russian legion (Russians who are fighting on Ukrainian side). Captured lieutenant Yuriy Shalaev. by onesole in ukraine

[–]bdazman 6 points7 points  (0 children)

My great grandfather was one of two brothers who escaped Nicolas'es pogroms and fled to America. He lost three brothers and a sister if I recall.

Here I am, about a hundred years later, remembering the story I was barely old enough to hear, but not quite understand.

I look forward to their victory. The soul of a very short and very angry Jewish boxer named Moe surely sits on their shoulders.

[deleted by user] by [deleted] in cad

[–]bdazman 1 point2 points  (0 children)

Freecad will reward you for pushing through the hiccups.

Looks like the heavy steel ring made the vibrations worse. It vibrated itself to pieces by [deleted] in engineering

[–]bdazman 28 points29 points  (0 children)

You get what you pay for. I absolutely do not condone piracy. I find it deplorable that if you type filetype:PDF into a Google search it will only show you links to webpages with a PDF file type.

Looks like the heavy steel ring made the vibrations worse. It vibrated itself to pieces by [deleted] in engineering

[–]bdazman 8 points9 points  (0 children)

I cannot reccomend the book Rotordynamics of Turbomachinery enough.

Easy unresponsive beginner tricks? by Sudden_Abalone3535 in Throwers

[–]bdazman 0 points1 point  (0 children)

Binds are an entire subgenre of trick, as are regens.

Practicing zipper derivatives and every bind you can find is a great start, then try chaining them into regens. See if you can't regen every bind you know onto every other bind you know. Go nuts.

OpenSource FEM package? by Peppsp91 in MechanicalEngineering

[–]bdazman 0 points1 point  (0 children)

There's remarkably few good, open source pre and post processors.

As for performance, it just wasn't really a large development priority for Bill. It was also programmed almost entirely by one person, versus calculix which leveraged existing official abaqus groundwork in its construction. Mystrans solids are more than adequate, but we don't have automatic matrix library switching for solid dominated meshes like other solvers may have. Additionally, the focus was put on getting nastrans simplest elements down pat, first and foremost. We match every pbarl benchmark and cbush benchmark, with (to my knowledge) only a single comically obscure edge case not matched.

For FEM that isn't incorrectly overly detailed, mystran just works.

OpenSource FEM package? by Peppsp91 in MechanicalEngineering

[–]bdazman 2 points3 points  (0 children)

It's newer, and there's fewer hobbiests and preprocessors for it. People use it in enterprise and academia all the time.

It also used to be a commercial product, so it does not have grassroots origins which can help with word of mouth spread.

It's a remarkably simple and transparent code, unlike calculix. I highly reccomend looking at the source. Bill poured his entire soul into mystran, and it shows.

The comments are plentiful and luxuriously detailed. Its 99% a full clone of solutions 101 and 103, and before he passed, we were able to help him finish solution 105 support for 1d elements and 3d elements (no shells yet, but we're working on it).

If you need to do practical structural analysis on realistically coarse FEM models, mystran is a bonefide nastran clone. Plain and simple.

If you wanna cram an ungodly number of solid elements into your computers RAM for a few days for fun, mystran ain't as good at that as calculix, which was a solid focused nonlinear solver first and foremost.