Shaped Charge Mania

Used JWL eos, beryllium for liner and tungsten for casing, HMX only. All simulations are axisymmetric, i mirrored the video so it visually makes more sense. The last sim I have tried many many times and eventually the solver couldn't handle it. I wish someone could continue my work since I ran out of inspiration. The last charge continuously crashes the solver (1 ring detonation and 1 back detonation), I would need a better solver or a real test.
-ctvip

[@raspas99]

"you know exactly where I'm going"? No. I have no idea. This was a randomly suggested video on KZbin. I have no idea what you're talking about but the colors look nice

[@fRiX15]

So right, I still haven't understood where he got the speed from, I can just find unit: m/s but not how many

[@OneGlassNail]

@@fRiX15 Look at the color bar below that header, it shows what each color means as well as the current max velocity. By the way, the units are mm/second.

[@kahlzun]

The color is the speed

[@pyroboy8590]

I understood some of the words

[@raspas99]

@@OneGlassNail thanks

[@doggonemess1]

The Department of Defense will be calling soon. They want to chat about something.

[@SimonPL-82]

Probably about that f**cked up music.

[@raptor_909]

Notice how the shape is the standard shape of an rpg

[@type93thunder]

@@raptor_909 in an RPG the front of the cone is hollow, leaving just the standard rear cone.

[@delphicdescant]

@@SimonPL-82 fr I was afraid to say anything cause usually when I criticize goofy music, there's suddenly an army of angry folks saying "that's a classic."

[@bondvagabond42]

Lol. The thing that's crazy to me, is how the shoulder fired rockets have negated much of tank armor benefit at a fraction of the cost of a tank, in the same way powerful bows and early firearms negated the value of knights in plate armor. History may not repeat its self but it rymes a lot -William shakespear, probably.

[@Paul_Sergeyev]

Imagine how much time and resources this development process would take in 1952 when they had no computer simulation

[@GKOYG_and_KAAF_is_epic]

They just went trial and error on the field and deduct from results.

[@malm8477]

Bet it was a lot of fun

[@lapin46]

They mathematically modeled the wave fronts using analytic formulas and had various high speed camera, albeit with film. Analytical modeling is how von Neumann came up with a solution for the Pu core compression problem.

[@juliane__]

They looked into their books from the 30ies...

[@lapin46]

​@@juliane__ and they were hand selected extremely smart, very math savvy people with near unlimited resources, i.e. people, to do the number crunching once the math was established.

[@RichelieuUnlimited]

The problem with translating this into the real world is having a mechanism that will trigger the detonations reliably at exactly the right timing.

[@jimmcneal5292]

Works in nuclear weapons

[@Srae17]

What about tandem charges?

[@solus48]

@@jimmcneal5292 its also about cost, could you make an incredibly complex HEAT round that could achieve that level of precision? sure, but its probably more sensitive to handling and damage while in storage and the associated cost of both of those things.

[@minhducnguyen9276]

​@@solus48Not to mention you have to be able to produce a million of these things per year as they are consumable items so the design has to be simple and cheap.

[@Ang3lUki]

​@@solus48So like, tandem charges?

[@caesar_cider2777]

a 131km/s shaped charge sounds pretty scary

[@colemiller2149]

If the mass is too small then sure it'll still penetrate anything, but not as deeply or with a smaller hole

[@didotb01]

@@colemiller2149 sometimes a smaller hole, shockwave, molten metal, and metal fumes are all you need to **incapacitate** everyone in an enclosed armoured vehicle

[@WetDoggo]

Just build it 👌

[@mandi8345]

To be fair, anything measured in km/s is pretty scary

[@chaboii]

Build it and they (atf) will come ​@@WetDoggo

[@_ultramar]

It remains to be seen how many meters of homogeneous armor this explosion penetrates.

[@nineisamagicnumber]

*kilometers

[@Tehn00bA]

It would also rely on how much mass is expelled. Ideally you want the most lining/metal jet as possible as fast as possible.

[@JIKwood]

according to a calculator i found, 10 meters, assuming it has 10 cc of berylium.

[@murmenaattori6]

Stop pretending to be smart just because you played War Thunder once.

[@Kero-zc5tc]

@@murmenaattori6why are you being so needlessly aggressive?

[@America_Thunder]

Remember guys he’s NOT suicidal and if anything happens to him I blame “big tank”

[@coltpiecemaker]

Don't worry, "big anti-tank" will keep him safe. However, he probably won't get to see the light of day for a while...

[@theapexsurvivor9538]

​@@coltpiecemakerluckily, designing countermeasures to your weapons simulations pays pretty good: you get to not die.

[@julese7790]

Casual weapon simulation when drinking coffee in the morning. I love it.

[@kevinstoneburner1116]

I am an explosives fabricator specializing in custom linear shaped charges for aerospace applications, and I would absolutely freaking LOVE to be in on this kinda R&D!

[@DanielCGCG]

I do manufacturing scale-up of nanomaterials, and I would too my dude

[@jjoonathan7178]

Legends have it the jet is still penetrating additional meters of homogeneous armor to this very day.

[@nuclearfrog306]

one huge factor to consider with this cylindrical shaped charge is ease of manufacturing. some of these designs boast higher jet velocity, but timing secondary charges like that would require the kind of precision seen in nuclear weapons. having the most advanced weapons in the world means nothing if you cannot produce a large quantity and get it to the front lines

[@JurekOK]

I think you will find that precision timing electronics have gotten smaller since 1945. I have been recently working with a 16GHz clock/timer that costs less than $1 per piece. No joke. (RC delay ring architecture)

[@notachair4757]

That's incredible. I would've never thought that inverted shaped charges would work

[@thiagovanzella9911]

keep in mind that using a liner like beryllium can make the velocity of your jet increase because it's a much lighter atom, so it needs less kinectic energy to achieve the same velocity as a heavier atom like copper, so even though it is faster it doesn't necessarily have more kinectic energy, you should check that out because what you really want if the goal is to penetrate as much armour as possible is kinectic energy.

[@aurelienpuymerail]

Can you test it against armor with conventional shape charge side to side

[@David-ng6hi]

my thought is I have no idea wtf I just witnessed, but what I definitely *did* see was great dedication to experimentation, adaptive modification and the scientific method. Keep up the good work!

[@thompsonschwabbel6622]

"you known exactly where im going" yes, and it was super satisfying !

[@randomjoerandomjoe]

Dare: real mango made out of metal with a speed of a soviet mango apfsd shell (or american i dont remember) vs modern bradly side armour

[@qumit165]

It will pen a real mango out of steel is like a 50-60 mm shell

[@randomjoerandomjoe]

​No the mango made out of metal going the same speed of soviet mango apfsd​ against modern bradly side armour @@qumit165

[@contemptordreadnought]

​@qumit165 Hypersonic 10kg ball of metal vs ifv = One very dead bradley

[@neurofiedyamato8763]

​@@contemptordreadnoughtrealistically, it would lose velocity very fast

[@contemptordreadnought]

@@neurofiedyamato8763 Read the original comment

[@ikoiko5311]

Yooo dude the amount of reserch and simulations is crazy, keep it up. Thanks for the effort.

[@Ascent62]

1:11 what material did you test the penetration on?

[@kaptainkraken]

thank the algorithm, this is the kind of video that i can use for fresh CAD inspiration.

[@CloudCuckooKing]

I really wanna see a military ordnance lab try that last design. If the solver can't handle it, you KNOW it must be good.

[@vandye1884]

Congrats you've invented the panzerfaust

[@toasteronleg]

I really wanna see some pen test with this stuff.

[@zanneel6758]

Me who flunked high school physics: "Ah, yes. Of course. I see." [TV static noise intensifies]

[@hinz1]

Implies a perfect HE wih no real world imperfections. IRL there are always higher and lower pressures, which distort the ideal wavefront, what makes these ultra high performance shaped charges nearly impossible.

[@darth_dan8886]

It's wild how what used to be an expensive and dangerous test can now be repeated time and time again, at a negligible cost, with such minor alterations as a single degree of the cone angle...

[@michaelbuckers]

And at the end of the day, a simple copper and high explosive burrito still works the best.

[@echoeversky]

3 short pipe based cylinders that fire isometricly up into a larger shaping chamber to impart rotational spin into the spike. Copper based kinetic drill bit.

[@johnferry7778]

Well I think you’ve cleared that up nicely.

[@ninethirtyone4264]

I think that when trying to get those high speeds the geometry of the warhead, machining and powder consistency must be very precise, otherwise the charge will explode sideways and the jet will not form, as just small deviations will cause what in my field we would call a standing wave. That's probably why they are not used that much.

[@ArsenioDev]

Oh boy I love the funky sim channel, always a good thing to see the recommendations

[@AceRobo]

2:00 was perfect. Like a drop of water bouncing in a still puddle.

[@ZebraLemur]

There are probably a lot of solutions in here that are correct, but unstable. The smallest changes with machining, explosive packing, and detonation may not produce an actual jet. If I drop a quarter edge down, how many times does it actually land on the edge- very few if any out of thousands of attempts. Very cool video. I've always wanted to see a simulation of a shaped charge- fascinating stuff

[@DalHrusk]

What about initiazing nuclear fusion with conventional explosives?

[@fullmaster5093]

Qumit, do you perhaps know a person under nickname "Enthusiast" ? ​@@qumit165

[@DalHrusk]

@qumit165 Thanks

[@thiagovanzella9911]

it is possible, theres an academic paper about it, the title is "High-Gain Magnetically Insulated Impact Fusion via Staged Explosive Acceleration to Hypervelocity", it's not as powerful as a thermonuclear weapon tho

[@ПолорЄлеон]

Hello, and thanks for a great video! Long time ago, I've seen a research paper about novel shaped charges. I don't think I can find it, and I'm sure it even exists in open acess (through if it does I'll post a link). But the design they ended up with, which has supposedly shown 20-50% higher practical penetration values, was as follows (also, english isn't my first language, so forgive me): A regular, non inverted shaped charge cone. Except the walls look "crincled". Cone consists of a small number (6-8) of wall "segments", each of them is a linear shaped charge. Upon detonation, jets from them converge. From top down point of view, the cone looks like a star, and from the side like a cone. Not sure if it's possible to simulate it in 2d, but anyway, thought you might find it interesting.

[@SammyGDude]

Well, I finally understand how finnicky the conventional charge of an atom bomb is.

[@Ghostmaxi1337]

In the last test are those 3 or 5 detonations? Is it 2d or really 3d?

[@qumit165]

2 detonations, 1 in a ring, one at the back

[@squidwardfromua]

How do you even detonate the whole ring simultaneously irl?

[@246-trinitromethylbenzene8]

@@squidwardfromua You really couldn't, best you could do is fit like 8 or more blasting caps around the ring, but achieving a perfect spherical Detonation is very difficult unless the explosive is Laser or Electrically Initiated an has a small mass.

[@sicstar]

Even tho the jet might be very tiny in size and have low mass... At those speeds it will pretty much go straight trough anything i guess. And some MAD dedication you put into this! Really cool stuff!

[@arkadiuszrucinski2020]

Holy crap, great video! I love shaped charges

[@soul1d]

We better see some penetration tests against different armor with that final design

[@nickolson7825]

131,670 m/s is completely insane, if you manage to find a way to keep it from crashing, you've got to show us what that looks like against a building

[@nexaentertainment2764]

As we know, reality is perfectly symmetrical

[@Skiddlless]

When you really hate the guy on the other side of your RPG

[@DavidSikesII]

"Let's try to make it converge all at once!" I'll bet you money that's called your liner has no prayer of holding it down, but I could be wrong. You have absolutely earned yourself a subscribe. Edit: Also I laughed so hard when that line came on the screen. I love everything about this video. Edit the second: You stopped the video early on the last one! Was it because my theory was right?

[@wisniamw]

god damn, the manhole that we ejected from atmosphere with atomic blast is estimated to travel at 80km/s

[@alexforget]

We imagine metal as hard but it behave like butter if you look at it the right way.

[@JC-oq5ex]

it always comes back to the panzerschreck

[@kolinpauli5862]

Parabolic shaped charge on the end of the cone instead of a flat side? So like a teardrop with the pointly tip cut off. Parabolic portion focuses exhaust into one point, then the cone boosts the velocity? I subbed in case you do a follow up on this

[@janvesely6353]

This idea is around for quite some time afaik, but the issue was always to achieve the stability and symmetry of detonation and jet forming, as this is extremely sensitive to any irregularities. There were some interesting ideas like to shoot the high velocity jet thru a coil since it was supposed to be highly ionized and use this as EMP generator. But I am not aware that anyone has succeeded in practical implementation of this shaped charge geometry yet. Nevertheless I like your creative approach to the concept, perhaps it can be realized at some point.

[@dougalbyrne2817]

Imagine volunteering to see how it looks from the inside of a test tank...

[@scionboy100]

Tbh should've done more penetration tests, that was cool to see, plus would give a better sense of comparison. Cool video though, I didn't know you could use Solidworks to design shaped charges.

[@aefad]

Going to test these real quick

[@yoonseongdo3303]

Interesting design, although I think It would be tricky to detonate the second explosion wave at just the right time

[@toddkes5890]

Wires of just the right length to delay the signal from the controller to the explosives? So the main detonator sending the signal sends all the signals at the same time, but the length of the wire delays one set of signals by just enough. IIRC, there was one Russian radar system that needed a tenth of a millisecond delay from one circuit to another circuit right next to it. So the Russian system had ten feet of wire to delay the signal by just enough.

[@ThermalWorld_]

​@@toddkes5890exactly.. lol even simple CPU can delay those perfectly..

[@ALTERRAa8]

WE NEED MORE OF THIS (penetration test and more)

[@ethanebang8902]

We need to see the other end of those simulations

[@josecarlosamador]

Not sure how I got here, but I loved it.

[@YourLocalCapybara69]

thats about 0.3% the speed of light, so this bullet became the fastest man made object... at 324000kmph...

[@peggygawel7244]

Looks like modern panzerfaust

[@Tehn00bA]

At this point you're concentrating so much the implosion that you'll end up with a nuclear fission bomb alike, but with metal lining instead of near critical mass fuel. XD My suggestion would be to try an "egg" shaped lining (a rounded version of your last). 3 detonations like you were doing. Try both sides of the "egg"

[@lepermunna]

interesting work! it seems like there are some step change gains possible for shaped charges just from cunning geometry and timing... cool area of research

[@pseudo.Random-KF]

The fastest *chemical* shaped charge. Casaba Howitzers and nuclear shaped charges would like to have a word with you.

[@johnpaulvanson5170]

Feels like something that would work well with AI to brute force different shapes. Be interesting what counter intuitive designs that could come up with that work better than simple shapes.

[@ivanminnelli8300]

You gotta do a penetration test of the 6 point detonation charge!

[@nosidenoside2458]

What if you just made that first cylinder one really really long

[@TimRobertsen]

Oddly interesting! I have no idea how I got this recommended :p

[@dmdjt]

I'd like to know if my intuition is right, that the last version could benefit from a small timing change. Perhaps by making the opening ~10-20% bigger? It seems to me, that some energy gets lost in the wrong direction.

[@qualifiednot]

37 missed calls from DDTC

[@maxvonnitten4213]

When are we going to see the last design in a simulation? It looked awesome!! Can you tell us more about it? (Yeah I'm a huge nerd lol) Also, what software did you use?

[@rainiersauer4288]

Have you tried doing a tip-first ring detonation coupled with a curve instead of a line to simulate an increased liner angle, then use that shock to trip a base charge so the liner converges at high speed at approximately the same time while keeping the diameter small?

[@ATH42069]

I feel like this would be a good application for an RL environment.

[@magnitudefallout3944]

mfw I put NFC music on a video about ammunition designed to return you home in form of swiss cheese

[@andyhug90]

Id try more with the cylindrical shape but have an Explosion start from the center pushing forwards too. experiment more with different angles of explosions, try to let their direction accelerate the material towards the exit before it hits "itself" or push that out with a delayed Explosion from the bottom.

[@aniksamiurrahman6365]

We should totally use shape charge to launch rockets into the space.

[@bodenhagan]

Hahaha, I love this channel concept.

[@pr0hobo]

i wanna see a penetration test with the optimized shaped charge

[@napalmholocaust9093]

Someone else mentioned lenses. Seen plastic one near the base in rpg diagrams. It has to be a significant improvement to remove about a fifth of the warhead's payload.

[@thecamocampaindude5167]

That last one was a SPEEDY BOI

[@Space_Parrot]

Oh hey look, its shaped like a panzerfaust/rpg warhead

[@marcatteberry1361]

Holy Holes Bat Man!

[@dontnubblemebro]

I dunno if your simulation system can do it, but. Voitenko compressors, might be worth a look

[@CosmicGiantYT]

The last frame's max velocity(?) says 1.3167e5 max... That's 131670 in normal notation... Bro just casually published a (simulated) 131km/s shaped charge design.

[@daniaak]

What software are you using? Looks very interesting

[@newtypealpha]

Watch a video of someone reinventing the implosive lens from first principles. Nobody ask him what happens if you use weapons grade uranium as a liner...

[@pneumaniac14]

try various curves like x^2, |x|^3, x^4. Maybe some sort of loci of these curves. Also try a large bell curve where you detonate the entire surface at the same time.

[@LeThrowawayAccount]

There's an article called "Shaped Charged pierce the toughest targets" that describes a molybdenum shaped charge that appears to be hemispherical. The authors claim that it sets a record for penetrating steel. I don't know if the explosive was detonated starting at the top of the charge or the bottom. Anyways, can you simulate it?

[@alexwang007]

Are you using ansys? There might be a way to do geometric optimization, and even add in some genetic algorithms!

[@raptorking7479]

26 km/s? 11.6 km/s is escape velocity. Bro is gonna shoot away like one of them looney toons ahh endings with the little twinkle at the end to show how far he's gone.

[@JuanSmithers]

What solver are you using? Sometimes you can get crashes when you fall off the EOS table as well, and I really wouldn't be surprised if that is happening here.

[@lschwab]

Looks like an oil well perforator (unsurprising)

[@mammoowoolly1434]

From the depths players be like

[@jamieimbusch]

Hot damn, someone was bored 😆 inverted panzerfaust was my favourite

[@mitchellbailey5522]

Dude this is kinda like rocket engines

[@mezzanoon]

What's the program used? Do you have a recommendation for simming different suppressor designs?

[@UraniumEagle]

Would you be willing to detail your process in ANSYS for creating these simulations?

[@strange-aporate]

Surprising

[@Mp57navy]

Soon, he'll have rebuild the trinity device with one hexagon and the core missing.

[@blar2112]

Would you be able to make a hypothetical nuclear shape charge? something like manually tweaking the explosive charge properties until it approximates a Davy Crockett or something.

[@gsestream]

not any faster than explosion velocity, which is something around 8km/s at max, usually, for most explosives.

[@acr_master5594]

epic experimentation

[@jeffreyliu2289]

Hi, what software do you use for simulation? Ansys?