All Categories : Technical White Papers : CAE and FEA Bookmark and Share

Title : Failure Analysis of a 105mm Fin Deployment Mechanism
Company : SIMULIA
File Name : failure-analysis-105mm-fin-deployment-mechanism-2010.pdf
Size : 26603
Type : application/pdf
Date : 09-Jul-2011

Rate This File
5 Stars
4 Stars
3 Stars
2 Stars
1 Star

In order for artillery projectile guidance and control systems to meet precision performance requirements it is necessary to utilize fin stabilization rather than the conventional means of spin stabilization of artillery projectiles. Since the munitions are fired from a gun tube it is necessary for the fins to be stowed and secured during launch and then deploy once the projectile has left the muzzle of the weapon. The gun launch environment which a fin stabilized 105mm projectile can see is upwards of 15,000 G's of axial acceleration as well, it is required to have fins fully deployed within 30 milliseconds after exiting the muzzle brake in order to stabilize the projectile. During the first test of the XM-1137 VAPP fin deployment mechanism one of the test rounds experienced a structural failure of the fins. Using pressure data from the test as well as material testing of the recovered hardware in finite element analyses using Abaqus the root cause of the failure was identified. Abaqus/CEL was used to model the gun gas flow from the base of the projectile into the pressure orifice and Abaqus/Explicit was used to fit a Johnson-Cook damage model to the actual material test data. The results of these two analyses were then used in a full model of the projectile base and fin assembly in Abaqus Explicit to replicate the failure by fracture of the fins during the dynamic event of gun launch and fin deployment.
User Reviews More Reviews Review This File


Featured Video
Jobs
Senior Design Engineer for Kaman at Gilbert, AZ
Sr. Mechanical Engineer for Kateeva at Newark, CA
Mgr Mechanical Engineering 2 for Northrop Grumman at Melbourne, FL
MECHANICAL ENGINEER for Peter R. Thom and Associates at ORINDA, CA
Upcoming Events
Solidworks World 2017, Feb 5 - 8, Los Angeles, CA at Los Angeles CA - Feb 5 - 8, 2017
Design & Manufacturing, Feb 7 - 9, 2017 Anaheim Convention Center, Anaheim, CA at Anaheim Convention Center Anaheim CA - Feb 7 - 9, 2017
ACE 2017 Nashville at Nashville TN - Mar 21 - 23, 2017
Innorobo 2017 at Docks de Paris Paris France - May 16 - 18, 2017
MasterCAM



Internet Business Systems © 2017 Internet Business Systems, Inc.
595 Millich Dr., Suite 216, Campbell, CA 95008
+1 (408)-337-6870 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering EDACafe - Electronic Design Automation GISCafe - Geographical Information Services TechJobsCafe - Technical Jobs and Resumes ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy Policy Advertise