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Destruction Values of Glass
- Thread starter Ugarik
- Start date
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- Tags
- calculations
- Status
- 13,314
- 628
Bump
- 11,095
- 4,317
I think this can be applied, we can first change the Reference 0age and then slowly recalc in incorrect calculations over time.
- 11,095
- 4,317
How do you check that?
- 11,095
- 4,317
Sometimes that misses stuff for a reason.
Anyway this can be applied, it's non-controversial enough, but we need admins to unlock the Calculations and References for Common Feats pages.
Anyway this can be applied, it's non-controversial enough, but we need admins to unlock the Calculations and References for Common Feats pages.
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I've already applied it on my own posts involving glass.
But should we go ask a staff like ant to unlock them?
But should we go ask a staff like ant to unlock them?
- 11,095
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Sure. I'll ask him to unlock them.
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The reference page is unlocked, but which feats need changing?
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I think someone said something about the car feat?
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The car destruction feat as well yes.
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Smashing windshield is now a 9-B feat.
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- Thread starter
- #55
By the way wikipedia states that Young's modulus of glass is from 50000 MPa to 90000 MPa. Meaning 70000 MPa on average. That means it's ductility is 7/70000 = 0.0001. Using it's tensile strength and ductility we can finf it's actual thoughness: 0.5*0.0001*7 = 0.00035 J/cm3.
Not like it matters anyway
Not like it matters anyway
- 11,095
- 4,317
I wonder would toughness be more accurate for diamond fragmentation and violent fragmentation, since our current method is completely off for it? Using your method I get 0.058919802 j/cc.
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- Thread starter
- #57
https://www.azom.com/properties.aspx?ArticleID=262
It's stated here that ductility of diamond is 0.00241. Toughness is strength times ductility devided by 2 (only for brittle materials)
It's stated here that ductility of diamond is 0.00241. Toughness is strength times ductility devided by 2 (only for brittle materials)
- 11,095
- 4,317
Tensile strength?
If so 1200*0.00241/2 = 1.446 j/cc
If so 1200*0.00241/2 = 1.446 j/cc
- 11,095
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I wonder if we could make an exception for diamond to use toughness.
- 11,095
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Compressive strength of diamond is like far higher than tensile strength though.
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- Thread starter
- #63
Just for your understanding. Ductility of a material mean how much you can stretch it until it breaks. So ductility 0.00241 means that a piece of diamond can become 0.241% longer during tension without breaking.
So 1 meter long diamond rod can become 2.41 mm longer if you're trying to stretch it.
So 1 meter long diamond rod can become 2.41 mm longer if you're trying to stretch it.
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- Thread starter
- #64
And if the rod in question has 1 cm^2 cross sectional area, with 1200 MPa tensile strength you will need 120000 N of force to stretch it.
So if you multiply the distance by the force you will get your energy. And if you devide that energy by the volume of the rod you will get the thoughness.
So if you multiply the distance by the force you will get your energy. And if you devide that energy by the volume of the rod you will get the thoughness.
- 11,095
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So:
(1200*100*0.01)/1 = 1200 j/cc
I feel like I'm misunderstanding something.
(1200*100*0.01)/1 = 1200 j/cc
I feel like I'm misunderstanding something.
- 11,095
- 4,317
Hmmn I think we should probably make an exception and use toughness for diamond, since its shear strength is completely off.
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What about other materials?Ugarik said:
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I don't think it'd work out for other materials since they don't have the same structure as crystals and shit. Thing about diamond is, it won't break if you hammer it on its flat-side but it will tear itself asunder if you strike at the pointed tip for some reason.
Agnaa sent me an article about the crystal thingy on my wall too.
Agnaa sent me an article about the crystal thingy on my wall too.
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So what should we do for diamond fragmentation?
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What method though?
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I guess that works since toughness is like the bare minimum for destroying something.
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So low-end tensile strength and low-end ductility to get toughness for fragmentation, and high-end tensile strength and high-end ductility to get toughness for violent fragmentation maybe?
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I remember Drite suggesting crystal quartz to be added to the Calculations page as well. Its tensile strength is 48 MPa, so the force for a 1 cm^2 cross-sectional area rod would be 4800 N. Young's modulus is at least 76 500 MPa, so ductility would be 48/76500. Using Ugarik's method:
0.5*4800*(48/76500)/100 = 0.01505882352 j/cc
0.5*4800*(48/76500)/100 = 0.01505882352 j/cc
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- Thread starter
- #77
https://en.wikipedia.org/wiki/Resilience_(materials_science)
There's a simplier formula.
48^2/(2*76500) = 0.01505882352 j/cc
There's a simplier formula.
48^2/(2*76500) = 0.01505882352 j/cc
- 11,095
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Is that the same as toughness?
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