Cybertruck 3mm body: hail resistant?

[Jhodgesatmb]

It's probably aluminium because you can extrude the necessary profile for interlocking slats in one peice, which also brings the vault cover cost down whilst keeping the material use to a minimum.

But, being able to stand on something with your socks on, doesn't mean it will be "impact" proof, like the hammer test. Load bearing is not the same as impact resistant. Imagine hitting the panel with a boxing glove, or a spike. The spike has much more force per unit area (pressure) which will locally deform the surface. In this case with hail, the smaller surface area, high density and high velocity will end up having much higher impact energy.

Reminds me of a joke I've shared here before.

An Austrian mountain climber takes two hats with to test on his climb. He gets to the top of the cliff and throws a hard plastic rock clinmbing helmet over the edge, it hits the rocks below and shatters into a hundred pieces.

Test result: Did not Pass.

Next he throws down a knitted beanie, it hits the rocks below but stays completely intact. He wore that beanie till the day he died.

True enough and in fact there are aluminum grades that are very stiff (7000 series) with higher peak stress but I was thinking ‘soft’ (a bad choice of words in retrospect) as a comparison to cold rolled stainless. My real thought was the lack of corrosion resistance of aluminum compared to stainless. In fact extruded aluminum might fare decently against hail.

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[cvalue13]

On a separate thread RE the glass, I’d come across this RE the Tesla patent for the CT


“In some embodiments, the multilayer glass stack has at most a, or about a, 10% chance of failure with an impact of, or of about, 1 J, 1.5 J, 2 J, 2.5 J, 3 J, 3.2 J, 3.5 J, 3.8, J, 3.9 J, 4 J, 4.5 J, 5 J or 6 J, or any range of values therebetween. In some embodiments, the multilayer glass stack has at most a, or about a, 1%, 2%, 3%, 4%, 5%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60% or 70% chance of failure, or any range of values therebetween, with an impact of, or of about, 3 J. “

Which is to say Tesla’s patent is expectedly over-broad in it’s possible “embodiments”

In response, Mother Nature is equally variable and “hold my beer”

“According to the International Association of Certified Home Inspectors (IACHI), the impact measured in joules, a unit of energy. IACHI says for instance, that 2-inch hailstone, falling at 72 mph, will carry 29.8 joules of impact energy…. The IACHI says a [baseball] sized hailstone would clock in at 162.7 joules, meaning a baseball sized hailstone impacting an object would do so with roughly the same amount of energy as the MLB’s fastest ever pitch. [A 19-inch hailstone in recorded in Vivian, S.D.]would carry around 193,897 joules of impact energy.”

which is all to say, when it comes to the question of how will the glass - or the SS - fare?

better than traditional materials, but also not up to a point does that matter

 

[SolarWizard]

This is one of the many reasons I’ve argued against solar glass or tonneau

Ill make sure theres a smart solution for this shortly after receiving the first one

 

[Jhodgesatmb]

On a separate thread RE the glass, I’d come across this RE the Tesla patent for the CT


“In some embodiments, the multilayer glass stack has at most a, or about a, 10% chance of failure with an impact of, or of about, 1 J, 1.5 J, 2 J, 2.5 J, 3 J, 3.2 J, 3.5 J, 3.8, J, 3.9 J, 4 J, 4.5 J, 5 J or 6 J, or any range of values therebetween. In some embodiments, the multilayer glass stack has at most a, or about a, 1%, 2%, 3%, 4%, 5%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60% or 70% chance of failure, or any range of values therebetween, with an impact of, or of about, 3 J. “

Which is to say Tesla’s patent is expectedly over-broad in it’s possible “embodiments”

In response, Mother Nature is equally variable and “hold my beer”

“According to the International Association of Certified Home Inspectors (IACHI), the impact measured in joules, a unit of energy. IACHI says for instance, that 2-inch hailstone, falling at 72 mph, will carry 29.8 joules of impact energy…. The IACHI says a [baseball] sized hailstone would clock in at 162.7 joules, meaning a baseball sized hailstone impacting an object would do so with roughly the same amount of energy as the MLB’s fastest ever pitch. [A 19-inch hailstone in recorded in Vivian, S.D.]would carry around 193,897 joules of impact energy.”

which is all to say, when it comes to the question of how will the glass - or the SS - fare?

better than traditional materials, but also not up to a point does that matter

It might just be that they do not want to give their competitors too much information in the patent application. Yes, that is very broad, but that also makes it more difficult to bring and prove a suit against someone. I suspect that they are more interested in protecting their actual formula so they might pursue litigation over a very narrow set of paramters even though they drafted the claims over a much broader set of parameters. Its just a guess but I have written a few patent applications and that is my gut feeling from that limited experience.

 

[MonkeyDeLuffy]

The stainless on my DeLorean was severely damaged by a Texas hailstorm, but somehow none of the glass fractured.

If caught in a hailstorm driving the CT, my fear would be the glass roof. If it breaks, there is nowhere to hide.

No worries. Water leak comes first. You have plenty of time to decide which insurance company to call.

 

[CyberGus]

No worries. Water leak comes first. You have plenty of time to decide which insurance company to call.

Water leak??!? I'm worried about a concussion

 

[punkt]

Bullet resistant to 9mm.. that big 'ol front window though.. hmm.. just hope the steel ball doesn't fall!

 

[cvalue13]

It might just be that they do not want to give their competitors too much information in the patent application. Yes, that is very broad, but that also makes it more difficult to bring and prove a suite against someone.

yes of course

and for the same reasons, seeing the patent for info about Tesla’s discrete plans is only nominally helpful

the patent is actually broad enough that I can’t make out a single separate component that sounds novel: from numbers of layers, to composition, etc., it all sounds done before to someone that isn’t a glass manu expert

 

[MonkeyDeLuffy]

Water leak??!? I'm worried about a concussion

Tesla should gift CT owners with squash rackets?

 

[Hoth Skier]

I can’t wait to go to my son’s baseball games and park right by the field where the foul balls fly. Glass and body should be foul ball proof? Nice around the golf course too probably? Normal cars are just so delicate, so I’m happy for an improvement.

 

[firsttruck]

Tesla should gift CT owners with squash rackets ?

Why would you need rackets or bats ??

Cybertruck will already have the BAW to protect the windshield.

Now just need a BAW for the glass roof.

Near vertical angle of side windows should be enough to reduce contact forces on them and most of the rest of the truck will 3mm cold-rolled stainless steel so that should be sturdy enough.

 

[Cyberman]

I've been watching some terrible hailstorms lately and that got me thinking: Provided that the glass can take or not take a large hailstorm, what do you think would happen to the 3mm stainless steel body and the Alu vault?

Cybertruck is certified (by me) against the worst hailstorm you can imagine. Even golf ball size hail ain't gonna do shit to 3mm of cold rolled stainless steel awesomeness. I'd even say the CT will fare way better than any other production vehicle, and as good as any armored vehicle. Just imagine a parking lot full of cars during a crazy hailstorm, the only vehicle unscathed is gonna be the CT.
Dare I say, "All hail CT?"

 

[SolarWizard]

Ive seen hail stones demolish roofs on homes and not just composite shingles.
Nature is gonna break your heart occasionally but thats what insurance is for

 

[Cyberman]

Ive seen hail stones demolish roofs on homes and not just composite shingles.
Nature is gonna break your heart occasionally but thats what insurance is for

OK, that too.

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