Bullet holes and material penetration physics

[max power 21]

Perhaps it's not the penetration system that's the problem so much as the objects available to test with.

Really, most objects in this game are either obviously flimsy or very sturdy. Corrugated tin and plywood fences or thick stone and mud-brick walls.

But really, I think that 14.5mm AP should probably penetrate a Takistani house.

I agree. As I was implying in my previous post in this thread, the engine may not be the deciding factor, rather it's the way the firegeometry is made. Does it make sense to make a non-enterable house model have a realistic floor plan in the firegeoLOD for the purposes of penetrating through outer and inner walls? I think not.

[becubed 24]

You can definitely fire through the hanger walls with a 5.56, I fixed up someone the other night like that. We surprised each other coming around the front corner and both ducked back. While he tried to manoeuvre around to take a pot at me I had the idea to dump a mag through the wall. It was the only highlight of the incredible pounding I took for the rest of the evening.:)

[Nicholas 5]

I'm gonna go try that now....

And, it works! I didn't even know you could do that!

Edited August 1, 2011 by Nicholas

[ghostnineone 10]

i shot someone through the concrete wall object with the m107, felt good man.

can you shoot through the takistani mud walls? i think a 50 cal would go through that irl, it definitely would if you hit it with a raufoss round

[maturin 12]

i shot someone through the concrete wall object with the m107, felt good man.

can you shoot through the takistani mud walls? i think a 50 cal would go through that irl, it definitely would if you hit it with a raufoss round

Even 14.5mm AP doesn't go through the walls of the primitive-looking mud huts. I forget about the compound walls.

Edit: I can't penetrate Zargabad compound walls with 30mm AP from a BMP. But a dozen hits from either weapon will make the whole wall section topple over. This is dumb.

At least something hilarious happened while testing. I somehow managed to kill my own BRDM from the gunner's seat. Either the round rebounded off the wall and into the vehicle, or I shot my own headlight, causing an explosion.

Edited August 1, 2011 by maturin

[Big Dawg KS 6]

I agree. As I was implying in my previous post in this thread, the engine may not be the deciding factor, rather it's the way the firegeometry is made. Does it make sense to make a non-enterable house model have a realistic floor plan in the firegeoLOD for the purposes of penetrating through outer and inner walls? I think not.

Well according to the Biki, such buildings could be configured with a thickness parameter so that it is not considered completely solid/homogeneous when calculating penetration. Not sure to what extent it's implemented on ArmA 2 buildings (as it only started working in OA) though.

With regard to impact & penetration decals, IMO it would be cool if this was improved in ArmA 3 to allow textured (& normal mapped) damage decals to be applied to different materials.

[wipman 1]

Hi, the green wood houses of 1 floor that are on Stary Sobor? on the ArmA2, can be pierced very easy by two or three bursts of a vanilla's game AK-107. Let's C ya

[maturin 12]

Victory!

It takes 40mm APS, but Zargabad and Takistan houses and compounds can be penetrated.

[coopr 10]

I can't seem to penetrate buildings under angle. Like the corner of a wall. Can any of you seem to kill someone on the other corner of a building?

[maturin 12]

I can't seem to penetrate buildings under angle. Like the corner of a wall. Can any of you seem to kill someone on the other corner of a building?

I'm not so sure that corners can be shot through. It's more like the whole building has a uniform value.

For example, I can't shoot through the corner of a log cabin with 7.62x51mm, yet I can shoot 5.56mm through several feet of a light wood frame extension with windows.

And if the angle is too low, the round is likely to ricochet off. I don't know if angle affects penetration or just increases ricochet probability.

[becubed 24]

Even 14.5mm AP doesn't go through the walls of the primitive-looking mud huts. I forget about the compound walls.

Edit: I can't penetrate Zargabad compound walls with 30mm AP from a BMP. But a dozen hits from either weapon will make the whole wall section topple over. This is dumb.

From some of the doco's I've seen (Ross Kemp in Afghanistan) the 30mm from an Apache doesn't go through them. It leaves a largish crater but doesn't penetrate.

[maturin 12]

From some of the doco's I've seen (Ross Kemp in Afghanistan) the 30mm from an Apache doesn't go through them. It leaves a largish crater but doesn't penetrate.

Well if 30mm M230 fails to penetrate, I'm not surprised. But if the 50mm RHA dual purpose rounds aren't punching through, then damn, that's some tough mud.

Does anyone know if the Apache typically fires a mix of HEI and DP?

[max power 21]

Even 14.5mm AP doesn't go through the walls of the primitive-looking mud huts. I forget about the compound walls.

Edit: I can't penetrate Zargabad compound walls with 30mm AP from a BMP. But a dozen hits from either weapon will make the whole wall section topple over. This is dumb.

At least something hilarious happened while testing. I somehow managed to kill my own BRDM from the gunner's seat. Either the round rebounded off the wall and into the vehicle, or I shot my own headlight, causing an explosion.

Shot bullet and shot shell are two different simulation types. Perhaps the 14.5mm cannon is using the shell simulation.

[maturin 12]

Shot bullet and shot shell are two different simulation types. Perhaps the 14.5mm cannon is using the shell simulation.

Good point, as I think it is classed as an autocannon by the engine.

Anyways, neither 12.7mm nor 30mm will do the job.

[wipman 1]

Hi, on the ArmA2 i can kill AIs and they can kill me piercing throug some wood houses corners; i with the 5.56 and they with the 5.45. Maybe in this case the FireGeo LOD don't matches the View LOD of this houses and it is a smaller box inside the View LOD, and that's why it's possible to shoot throug some houses corners, but i've to say that you've to shoot almost a mag to hit or kill the AI or player at the other side. Let's C ya