Accession Number : AD0635486

Title :   QUARTERLY REPORT OF TECHNICAL PROGRESS.

Descriptive Note : Issue no. 4,

Corporate Author : MARTIN CO DENVER COLO CENTER FOR HIGH ENERGY FORMING

Personal Author(s) : EZRA, A. A.

Report Date : JUL 1966

Pagination or Media Count : 26

Abstract : A key word end identifier list has been prepared to facilitate the retrieval of documents relevant to High Energy Forming, which are being incorporated into a computer retrieval program. The development of instrumentation has continued for two classes of experiments. One is the plane wave loading of flat specimens using mousetrap techniques for shock hardening studies. The other is the expanding ring technique for determining dynamic stress-strain relations. Solutions have been obtained for a set of simplified differential equations of motion of the large dynamic plastic deformation of circular blanks. Experimental checks have shown fair agreement. The largest source of error is in the estimate of energy delivered to the blank from the explosive. Firsthand coupling experience was obtained with an Air Force program for explosively forming 10-ft-diam domes for the Titan. Technical difficulties arose that were solved by personnel of the Center. Problems identified will be reflected in the future research programs of the Center. The first 10-ft production dome was successfully formed on June 24, 1966. (Author)

Descriptors :   (*EXPLOSIVE FORMING, REPORTS), INFORMATION RETRIEVAL, HARDENING, STRAIN(MECHANICS), DIFFERENTIAL EQUATIONS, EQUATIONS OF MOTION, DEFORMATION, HEMISPHERICAL SHELLS

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE