Accession Number : ADP001756

Title :   Plain Concrete Loaded at High Strain Rates,

Corporate Author : AIR FORCE WEAPONS LAB KIRTLAND AFB NM

Personal Author(s) : Galloway,Rodney G.

Report Date : MAY 1983

Pagination or Media Count : 6

Abstract : Failures to reinforced concrete structures subjected to blast and shock loads from nuclear and conventional weapons generally occurs at high strain rates from 0.1 to 10.0s-1. In order to analytically predict structural response, material models are needed to characterize the strain rate sensitive behavior. Data to verify and base the material models is also needed. Some information is available for strain rates from hydraulic testing machines and drop hammers. This report is to document the conclusions of the initial simplified calculations performed trying to define what information is known about strain rate sensitive behavior of concrete and how to set up an experimental program designed to answer pertinent questions. It was determined that the best constant strain rate loading device would consist of either a linearly increasing pressure load at the concrete specimen surface or a piston driven by a linearly increasing pressure. (Author)

Descriptors :   *Weapons effects, *Explosion effects, *Concrete, *Structures, Strain rate, Failure(Mechanics), Buried objects, Ground shock, Blast waves, Structural response, Mathematical analysis, Computations, Pressure, Loads(Forces), Explosive charges, Displacement, Modulus of elasticity, Sensitivity, Yield strength, Test methods, Conferencing(Communications), Symposia

Distribution Statement : APPROVED FOR PUBLIC RELEASE