TRANSIENT ANALYSIS OF OBLIQUE IMPACT.
Abstract
An analysis is carried out of the propagation of stress waves from an oblique unit step pulse con centrated at a point on the upper surface of an infinite plate whose thickness is of the order of magnitude of a wave length. The expansion method used by Mencher in his buried source problem is employed to separate successively re flected waves of increasing time delay. A problem of determination of a Laplace transform and its inversion is encountered and is solved by inspection with use of Cagniards artiface. Stress expressions and sets of numerical principal stress values are obtained for the stress state at points along the z-axis. The sets of numeri cal principal stress values are for oblique angles of incidence of 30 and 60 degrees. Stress sur faces are then drawn to illustrate the principal stress state variation with time and the jump discontinuity wave fronts signaling respective wave arrivals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1963
- Accession Number
- AD0410838
Entities
People
- Norman Davids
- William Lawhead
Organizations
- Pennsylvania State University