Response of porous beryllium to static and dynamic loading

Conference · Fri Jul 01 00:00:00 EDT 1977

OSTI ID:7317217

Isbell, W M; Walton, O R; Ree, F H

Previous investigations of the mechanical response of porous materials to dynamic loading have been extended to include the shock wave response of brittle metal. The complex response of berylliums of 10-15% porosity in two initial conditions has been examined in a theoretical and experimental program to be described. The study has resulted in the development of constitutive relations placed in hydrocodes which are capable of accurately predicting wave propagation in the berylliums. A comprehensive set of static (0 to 4 Gpa) and dynamic (0 to 44 Gpa) experiments was performed to measure the behavior of these brittle, porous materials to imposed loads. The results of the experiments guided a modeling effort which added several new features to previous models, including deviatoric stresses, porosity-dependent relaxation time of pore closure, elastic-plastic reopening of pores, and improved compaction functions.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7317217
• Report Number(s): UCRL-79712(Rev.1); CONF-770706-19; TRN: 77-016174
• Resource Relation: Conference: 6. AIRAPT international high-pressure conference, Boulder, CO, USA, 25 Jul 1977
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BERYLLIUM
SHOCK WAVES
COMPRESSIBILITY
EQUATIONS OF STATE
IMPACT SHOCK
PHASE DIAGRAMS
POROSITY
SINTERED MATERIALS
WAVE PROPAGATION
ALKALINE EARTH METALS
DIAGRAMS
ELEMENTS
EQUATIONS
MECHANICAL PROPERTIES
METALS
360103* - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies