Open AccessKINETIC EXPERIMENTS ON WATER BOILERS. "A" CORE REPORT. PART V. CONTAINMENT ASPECTS OF PRESSURE WAVES FROM SOLUTION EXPANSION
Author(s) -
Moses A. Greenfield
Publication year - 1961
Language(s) - English
Resource type - Reports
DOI - 10.2172/4072696
Subject(s) - mechanics , materials science , homogeneous , core (optical fiber) , pressure vessel , pulse (music) , rise time , deformation (meteorology) , flow (mathematics) , kinetic energy , composite material , thermodynamics , physics , optics , engineering , classical mechanics , electrical engineering , detector , voltage
A theoretical treatment is made of the stress-strain and plastic flow properties of spherical shells of stainless steel under dynamic loading. The results are used to calculate the response of a homogeneous reactor core to inential pressure pulses. The importance of the duration of the pressure pulse as compared with a natural time or period of the material in plastic as well as in elastic deformation is noted. For a small homogeneous reactor core vessel, the natural plastic "swing time" is found to be about 0.25 msec. The rise time of the pressure pulse is 2.5 msec while the decay time is approximately 12.5 msec. Thus the rise time of the pressure pulse is about 10 times as large as the ""swing time,'' which means the static pressure approximations hold quite well, and maximum energy absorption is determined for the conditions under which the vessel will fail. (auth