Accession Number : AD0786241

Title :   Approximation Techniques for Impulsive Loading of Structures of Time Dependent Plastic Behavior with Finite Deflections.

Descriptive Note : Technical rept.,

Corporate Author : BROWN UNIV PROVIDENCE R I DEPT OF ENGINEERING

Personal Author(s) : Symonds,P. S. ; Chon,C. T.

Report Date : MAR 1974

Pagination or Media Count : 51

Abstract : Methods for estimating plastic deflections of impulsively loaded structures are described with emphasis on methods for rate dependent behavior which can be extended to problems of finite deflections. Two approaches are described, namely deflection bounds and the mode approximation technique. A constitutive law of homogeneous viscous type is used since this simplifies both approaches and is conservative. The authors illustrate fitting this representation to test data for mild steel and titanium alloys. A discrete two-mass model is used to illustrate the basic ideas. (Author)

Descriptors :   *Impulse loading, *Plastic deformation, Approximation(Mathematics), Mathematical models, Steel, Titanium alloys, Structures

Subject Categories : Metallurgy and Metallography
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE