NDLI: Optimal Central Composite Design for Manufacturing Simulation of 0.50 Caliber Projectile

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Echempati, Raghu Ane, Bernadetta Kwintiana Mark, E. Krueger Roller, Dieter
Copyright Year	2011
Abstract	Design and manufacturing simulations of critical components such as bullets are considered crucial, particularly, when it is associated with the expense and time constraint of the engineering projects. During the manufacturing, the projectile jacket is the component that faces the greatest strain or stress. In order to find an optimal manufacturing operation for the .50 caliber projectile, an experiment is performed using the Box-Wilson Central Composite Design (CCD) using a combination of two controlled factors, i.e., friction coefficients and hardening exponents, with three-levels of each. The sensitivity of the plastic strain to the hardening exponent and friction coefficients is analyzed. The response surface plot fits well to the second-order polynomial function and is able to provide relative the same plots when the model is extended up to the fourth-order. Furthermore, it is found that the greatest plasticity likely to occur in the jacket walls as the ironing process is performed. Based on the residual strain and stresses analysis, it is evident that the selected material used in the production of projectile is viable. Finally, the ductile fracture analysis confirms that the jacket design is considered safe for the selected manufacturing processes.
Starting Page	31
Ending Page	40
Page Count	10
File Format	PDF
ISBN	9780791854891
DOI	10.1115/IMECE2011-63226
Volume Number	Volume 3: Design and Manufacturing
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Ductile fracture Central composite design Plastic strain Residual strain/stresses Design Composite materials Projectiles Simulation Design for manufacturing Stress
Content Type	Text
Resource Type	Article

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