M9 Pistol Analysis and Modifications Michael J. Daniti Mechanical Engineer Small Caliber Weapon...
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![Page 1: M9 Pistol Analysis and Modifications Michael J. Daniti Mechanical Engineer Small Caliber Weapon Systems Branch Bldg 65N Picatinny Arsenal, NJ 07806 973-724-5223.](https://reader038.fdocuments.us/reader038/viewer/2022102519/56649f355503460f94c53b9c/html5/thumbnails/1.jpg)
M9 Pistol Analysis and Modifications
Michael J. DanitiMechanical EngineerSmall Caliber Weapon Systems BranchBldg 65NPicatinny Arsenal, NJ [email protected]
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Objectives:
Theoretical Study
Modifications to Current System
Upgrades to Current System
Address long term M9 life issues
Investigate Heat stress cycle failures
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Modifications to Current M9 Pistol
Reduce Stress Concentrations
Increase receiver life – cost concerns
Upgrades to Current System
Picatinny Rail
Lower wear characteristics
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Finite Element Analysis Procedure
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Force Applied in the Locking block area
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Force Applied in the Locking block area
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Force Applied in the Locking block area
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Force Applied in the Locking block area
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Force Applied in the Plunger Area
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Force Applied in the Plunger Area
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Force Applied in the Slide Spring Area
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Force Applied in the Slide Spring Area
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Force Applied in the Slide Impact Zone
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Force Applied in the Slide Impact Zone
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Transient Heat FEA• 350 degree Fahrenheit transient load
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Transient Heat FEA Results
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Modifications to Current Receiver
Reduce stress concentrations in Locking Block area by increasing radius from .3 mm to .8 mm - decreases stress riser by a factor of 2
Ensure proper heat treatment throughout the life of the parts
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Modifications to Current Receiver40 ksi stress at locking block radius
21 ksi stress at locking block radius
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Upgrades to Current M9 Pistol
MIL-STD-1913 Picatinny RailCommercial Solutions were deemed marginally acceptable for M9 and not acceptable for the M11
Improved coatingIncrease expensive part life
Keep all parts in the system longer
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Picatinny Rail System
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Original CG
New CG
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Wear and Residue ReductionUCT Defense’s UltraCem™
• Columnar growth Coating
• Coefficient of Friction•UltraCem™: .08
•Hard Chrome: 1.3 - 1.35
• Gunpowder residue doesn’t stick to weapon parts
• Residue and coating does not bond chemically
•Tested by the Army Marksmanship Unit
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UltraCem® Abrasion Resistance Comparisons
ASTM-G65 Abrasive Sand / 2,000 Revolutions
Adjusted Mass Loss
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ASTM-G65 Abrasive Sand Test
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Future Work
Live fire testing of the UltraCem® product
Dynamic Simulation Analysis Software Accurately evaluate part velocities and impact forces
Generate a robust and accurate 3D dynamic model
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Software Evaluation: MSC Corp.
ADAMS software package
Virtual Nastran 4d
LMS CorpVirtual.Lab package
Parametric Technology CenterMDO/MDX Package
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Future Work Evaluating criteria for the mechanical simulation packages:
Compatibility with Pro-Engineer
Overall Cost / Cost Flexibility; i.e. leasing, etc.
Design of Experiments Capable
Industry/Technical Support
Software Complexity
Speed of Iterations
Ease of use
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QUESTIONS??