A_Mysterious_Stranger Posted July 1, 2019 Author Report Share Posted July 1, 2019 Other books for download, which I'm behind on a promise to post: THEORY OF THE INTERIOR BALLISTICS OF GUNS.J.CORNER PHD Modern Exterior Ballistics Ceramic Armor Materials By Design Lightweight ballistic composites for military and law enforcement applications Quote Link to comment Share on other sites More sharing options...
Lord_James Posted September 6, 2019 Report Share Posted September 6, 2019 24th International Symposium on Ballistics (September, 2008) https://apps.dtic.mil/dtic/tr/fulltext/u2/1009660.pdf Quote Link to comment Share on other sites More sharing options...
Gripen287 Posted June 9, 2020 Report Share Posted June 9, 2020 From the age of slide rules: INVESTIGATION OF THE DRAG OF VARIOUS AXIALLY SYMMETRIC NOSE SHAPES OF FINENESS RATIO 3 FOR MACH NUMBERS FROM 1.24 TO 7.4 TRANSONIC DRAG MEASUREMENTS OF EIGHT BODY -NOSE SHAPES BODIES OF REVOLUTION HAVING MINIMUM DRAG AT HIGH SUPERSONIC AIRSPEEDS Quote Link to comment Share on other sites More sharing options...
Gripen287 Posted June 24, 2020 Report Share Posted June 24, 2020 FEA of M855 FEA of Lightweight Ammunition Materials Cartridge Case-Chamber Interactions Quote Link to comment Share on other sites More sharing options...
Stimpy75 Posted August 30, 2020 Report Share Posted August 30, 2020 FİRİNG NOW! (TANK,ANTİ-Tank and Self-Propelled Artillery Ammunition UK&USA 1939-1945 Collimatrix 1 Quote Link to comment Share on other sites More sharing options...
Lord_James Posted January 30, 2021 Report Share Posted January 30, 2021 “Research investigation of armor plate steels” November 1941 https://apps.dtic.mil/dtic/tr/fulltext/u2/a953684.pdf February 1942 https://apps.dtic.mil/dtic/tr/fulltext/u2/a954408.pdf https://apps.dtic.mil/dtic/tr/fulltext/u2/a954182.pdf March https://apps.dtic.mil/dtic/tr/fulltext/u2/a954195.pdf August 1944 https://apps.dtic.mil/sti/pdfs/ADA953682.pdf Quote Link to comment Share on other sites More sharing options...
A_Mysterious_Stranger Posted February 6, 2021 Author Report Share Posted February 6, 2021 I don't know if anyone ever checks the internet archive but they have books. All kinds of books. Including gun books. Understanding Firearm Ballistics https://archive.org/details/understandingfir0000rink The Thermodynamics of Firearms. Design of firearms as heat engines and the interior and exterior ballistics of projectiles. (two copies) https://archive.org/details/dli.ernet.6268 https://archive.org/details/dli.ernet.234005 The Big Book of Ballistics https://archive.org/details/BigBookOfBallisticsPhilipMassaro/page/n25/mode/2up They also have some older books that might interest some: Principles Of Firearms [ Charles Edward Balleisen And some DTIC stuff - alot of it actually: DTIC ADA226267: Superconducting and Computational Penetration Mechanics DTIC ADA570804: Physical Mechanisms of Soft Tissue Injury from Penetrating Ballistic Impact So the real treasure may be the fact there's more stuff people can find (and download, they have multiple formats and even torrents it seems) and store for technical discussion. (Also I see some of my links are down. I'll have to find some time in the future to replace them all but if somebody wants something I posted before send me a private message and I'll try to fix it. Sturgeon and Lord_James 2 Quote Link to comment Share on other sites More sharing options...
A_Mysterious_Stranger Posted February 12, 2021 Author Report Share Posted February 12, 2021 Haven't really had time to dig into stuff or post (I'm sure I have stuff somewhere, its just a mess of bookmarks currently since I've had computer issues and I haven't been motivated enough to organize.) But I did run across a couple articles that might be interesting: The Failure of a Tungsten Carbide - Cobalt Cored Projectile Penetrating a Hard Target What's interesting is that this is one of those lengthier papers that has an overview of AP stuff and some background, so someone interested in learning a bit about this might find it useful even if the focus is primarily ceramics and WC. Anyhow the abstract: Quote Experimental results are presented from an investigation of the parameters of a ceramic-faced armour system that are required to induce damage in a tungsten carbide - cobalt (WC-Co) penetrator. A WC-Co material model has been successfully developed and implemented within the numerical hydrocode AUTODYN 2D. The understanding of penetration mechanisms was used to guide a parametric investigation, validating the WC-Co material failure model with experimental results. A series of experiments has been conducted firing the Russian 14.5 mm BS41 WC-Co cored projectile into various thicknesses and types of alumina (Al2O3) and silicon carbide (SiC), backed by aluminium alloy or mild steel semi-infinite witness blocks. Results demonstrated that SiC B out-performed standard monolithic armours and a selection of other armour ceramics including PS 5000 SiC and Sintox-CL. After comminution, the SiC B consisted of particles of closely interlocked grains. These appeared to provide considerable resistance to deviatoric stresses. Results suggest that it is not only increased hardness but also the nature of the fracture of the ceramic ahead of the penetrator that improves the armour’s ballistic performance at defeating WC-Co penetrators. If such superior ballistic response can be controlled and incorporated into practical armour systems, it will provide the basis for an advance in armour protective capability against WC-Co penetrators. In addition, a numerical material model derived from experimental data was developed to provide a preliminary tool to study the WC-Co failure. It was demonstrated that the numerical estimation of WC-Co behaviour using a shock Equation Of State (EOS), a piecewise linear strength model and a principle stress failure model provides a good method to estimate spall behaviour under dynamic loading in AUTODYN 2D. Successful numerical simulation of the material model used demonstrated the future potential of the technique. Key Words: Alumina (Al2O3), AUTODYN 2D, Depth of Penetration (DoP), Silicon Carbide (SiC), Tungsten Carbide – Cobalt (WC-Co). Optimisation of small arms defeat via dynamic jacket removal This one is another lengthy paper but it also has a small overview a newcomer to the topic might like. Bonus points for adding the Nanosuit from Crysis as an example of 'future' development. Also the influence (good or bad) of the jacket on penetration is something I've been interested in since discovering that Athena AP round. Edit: This second paper has some oddities if not inaccuracies in it so I'm not 100% sure how reliable it is, I suppose someone more qualified will have to judge that. Be warned to take anything in this with a grain of salt. The link leads to a page where you can download the paper. Abstract: Quote The majorities of studies into penetration by small arms have neglected the contribution of the jacket to the penetration event due to its small mass compared to the rest of the bullet. Recent research has suggested that the jacket does actually play a measurable role in the penetration of a target. This project has focused on the concept of dynamic jacket removal as an approach to optimise small arms defeat. This approach was envisaged to address the gap in current knowledge with regards to the role of the bullet jacket in the penetration of a target. Here, jacket stripping techniques were employed, elucidating underling mechanisms where armour piercing (AP) rounds were fired at target materials. Forward ballistic experiments were conducted, utilising conventional ballistic testing on an indoor small arms range as well as 30 mm and 50 mm smooth bore single stage light gas guns. To compliment this work, reverse ballistic experimentation was also undertaken on a 50 mm single stage light gas gun. Impact events were interrogated via a series of diagnostics including high speed video imaging, flash X ray radiography and depth of penetration testing. Experimental results were complimentary, providing insight into two key competing effects with regards to the jacket on penetration. These were the potential for the jacket to cushion / damp the impact, as well as the physical confinement resulting from the presence of the jacket itself around the bullet core. Further, these experiments also identified a potential optimum in terms of stripping plate design. In addition, to further investigate the role of the bullet jacket, sample cores and jacket materials were loaded both together and in isolation using a split Hopkinson pressure bar, with results in particular highlighting the cushioning effect of the jacket material. Limited numerical simulations were also produced using Ansys® Autodyn. These numerical results further elucidated the experimental work – again highlighting the importance of the jacket in terms of cushioning the impact event / reducing the subsequent pre-loading of the penetrating AP core. Overall, both experimental and numerical results showed that the bullet jacket does indeed aid in penetration. In corollary, in practical terms, jacket removal has the potential to aid in armour performance – with the experiments conducted herein providing insight into dynamic jacket removal. In terms of such stripping mechanisms, it was demonstrated that a plate thickness comparable to the calibre of the bullet appeared optimal. Further, results have also shown the importance of hardness and other material properties when considering the final defeat of an incident projectile through spallation. Hopefully somebody will find one or both of these useful. 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A_Mysterious_Stranger Posted February 16, 2021 Author Report Share Posted February 16, 2021 Ran across this while going down another rabbit hole INTERNATIONAL WOUND BALLISTICS ASSOCIATION - downloadable PDFs Not entirely sure if anyone has seen these or already has them, but I thought I'd bring it up just in case. Quote Link to comment Share on other sites More sharing options...
Lord_James Posted March 14, 2021 Report Share Posted March 14, 2021 https://apps.dtic.mil/dtic/tr/fulltext/u2/139732.pdf “Survey of development work on plastic rotating bands” Quote Link to comment Share on other sites More sharing options...
Lord_James Posted March 21, 2021 Report Share Posted March 21, 2021 https://apps.dtic.mil/dtic/tr/fulltext/u2/a183104.pdf “Selective dissolution and recovery of depleted uranium from armor plate” Quote Link to comment Share on other sites More sharing options...
Lord_James Posted March 25, 2021 Report Share Posted March 25, 2021 https://apps.dtic.mil/dtic/tr/fulltext/u2/a393800.pdf “Advanced penetrator materials” (June 2001) A bit of generalized information, and a short read, but worth a look. Quote Link to comment Share on other sites More sharing options...
Lord_James Posted April 8, 2021 Report Share Posted April 8, 2021 Quote Link to comment Share on other sites More sharing options...
Lord_James Posted April 15, 2021 Report Share Posted April 15, 2021 “A ceramic armor material database” 1999 https://apps.dtic.mil/sti/pdfs/ADA362926.pdf Collection of a lot of tests and data into one concise document. 10/10, am still reading after 3 days because it’s over 200 pages Ceramics included are silicon carbide, boron carbide, titanium diboride, aluminum nitride, silicon nitride, aluminum oxide (85% pure), aluminum oxide (high purity), tungsten carbide, and soda lime glass. LoooSeR and Sturgeon 2 Quote Link to comment Share on other sites More sharing options...
Lord_James Posted October 16, 2021 Report Share Posted October 16, 2021 https://apps.dtic.mil/sti/pdfs/AD1027340.pdf “Mechanical metallurgy of armor steels” Commonwealth of Australia, 2016 Quote Link to comment Share on other sites More sharing options...
Lord_James Posted April 11, 2022 Report Share Posted April 11, 2022 https://apps.dtic.mil/sti/pdfs/ADA395913.pdf “Kinetic energy penetrator long term strategy study” 1990 A good, 147 page document on US thoughts between tungsten alloy and depleted uranium APFSDS, with a handy “executive summary” that gives a concise overview of the document. Quote Link to comment Share on other sites More sharing options...
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