Cast armor is a lil weaker than RHA IIRC. So that might be some factor.
Panzer IV armour layout.
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Re: Panzer IV armour layout.
Although the turret is cast, the roof is an RHA plate welded on top afterwards.ThatZenoGuy wrote: ↑18 Oct 2021, 12:05
Cast armor is a lil weaker than RHA IIRC. So that might be some factor.
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Re: Panzer IV armour layout.
Ahh, understood! Thank you!Peasant wrote: ↑18 Oct 2021, 12:50Although the turret is cast, the roof is an RHA plate welded on top afterwards.ThatZenoGuy wrote: ↑18 Oct 2021, 12:05
Cast armor is a lil weaker than RHA IIRC. So that might be some factor.
Re: Panzer IV armour layout.
For context: at this velocity this projectile is rated to defeat an 89mm vertical plate. Even though some fragments of the armour were projected through to the other side, it's still impressive and shows just how effective even a thin plate can be at extreme obliquities, at least against good quality sharp tipped AP rounds that remain mostly intact throughout the process. Perhaps the softer blunt tipped soviet shells would be superior under similar conditions.
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Re: Panzer IV armour layout.
The a posteriori breakage Pantern of the 75mm M72, indicates to me that the Simulation does not account for sheath hardening employed in US AP. They would bend more with breakage starting at the lower bourrolet in these sort of impacts. Against thick vertical plate, they do shatter frequently.
Re: Panzer IV armour layout.
Interesting observation. I should ask the Dejmian whether the material he uses for the shell is isotropic or not.critical mass wrote: ↑29 Nov 2021, 16:19The a posteriori breakage Pantern of the 75mm M72, indicates to me that the Simulation does not account for sheath hardening employed in US AP. They would bend more with breakage starting at the lower bourrolet in these sort of impacts. Against thick vertical plate, they do shatter frequently.
Say, do you know of any experiments carried out with a hardening pattern for the AP shell where the hardest portion is located along the central axis, with the radial layers of the cylindrical body tempered to progressively lower hardness? The goal would be to produce a shell that can bend at it's bourrolet without suffering a transversal fracture like this, even at the expense of nose integrity under high velocity impact against thick vertical plate?