Confirmation Tests of Hot and Cold Artillery Shell Drawing Operations
Abstract
Mathematical models for optimization of hot and cold artillery shell drawing operations, developed under an earlier project, were expanded to simulate the state-of-the-art technology drawing process that uses multiple dies in tandem with a tapered punch. The computer program DRAWNG was developed based on this analysis. Confirmation tests validated these mathematical models under production or near-production conditions. Conventional conical as well as computer-designed streamlined dies were also tested. A 4.2-inch M335 shell was used for the cold drawing tests, and a 155 mm M107 shell was used for the hot drawing tests. The computer-designed streamlined dies produced good parts in all tests, and this operation appeared to be smoother than the conventional process. Although streamlined dies wre 13% more efficient than conical dies during cold drawing, this difference was not measurably significant during hot drawing tests. In all cases, however, the computer program DRAWNG predicted the ram load versus ram displacement curve with acceptable accuracy and reliability. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1979
- Accession Number
- ADA077338
Entities
People
- G. D. Lahoti
- P. S. Raghupathi
- T. Altan
- T. L. Subramanian
Organizations
- Battelle Memorial Institute