Accession Number : AD0684766

Title :   AN ANALYSIS OF THE FORCES AND BENDING MOMENTS GENERATED DURING THE NRL DYNAMIC TEAR TEST.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Nash,G. E.

Report Date : 30 JAN 1969

Pagination or Media Count : 73

Abstract : An analysis is presented which predicts the hammer forces, specimen bending moments, and tear energies, generated during the NRL Dynamic Tear test. The theoretical predictions agree quite well with experimental observations for relatively brittle materials. The tear energy per unit net area calculated from this analysis is shown to vary significantly with initial impact velocity and specimen length for a brittle material. It is relatively independent of the specimen thickness and notch depth to width ratio. (Author)

Descriptors :   (*IMPACT TESTS, DYNAMICS), FORCE(MECHANICS), MOMENTS, MATHEMATICAL PREDICTION, INTEGRAL EQUATIONS, INTEGRAL TRANSFORMS, ITERATIONS, FRACTURE(MECHANICS), BRITTLENESS

Subject Categories : Test Facilities, Equipment and Methods
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE