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Title: Response of porous beryllium to static and dynamic loading

Abstract

Previous investigstions of the mechanical response of porous materials to dynamic loading have been extended to include the shock wave response of a brittle metal. The complex response of berylliums of 85 to 90 percent 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 35 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.

Authors:
; ;
Publication Date:
Research Org.:
California Univ., Livermore (USA). Lawrence Livermore Lab.
OSTI Identifier:
7306231
Report Number(s):
UCRL-79712; CONF-770706-17
TRN: 77-015225
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 6. AIRAPT international high-pressure conference, Boulder, CO, USA, 25 Jul 1977
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BERYLLIUM; SHOCK WAVES; SINTERED MATERIALS; COMPRESSION STRENGTH; ELASTICITY; MATHEMATICAL MODELS; POROSITY; WAVE PROPAGATION; ALKALINE EARTH METALS; ELEMENTS; MECHANICAL PROPERTIES; METALS; TENSILE PROPERTIES; 360103* - Metals & Alloys- Mechanical Properties

Citation Formats

Isbell, W M, Walton, O R, and Ree, F H. Response of porous beryllium to static and dynamic loading. United States: N. p., 1977. Web.
Isbell, W M, Walton, O R, & Ree, F H. Response of porous beryllium to static and dynamic loading. United States.
Isbell, W M, Walton, O R, and Ree, F H. 1977. "Response of porous beryllium to static and dynamic loading". United States. https://www.osti.gov/servlets/purl/7306231.
@article{osti_7306231,
title = {Response of porous beryllium to static and dynamic loading},
author = {Isbell, W M and Walton, O R and Ree, F H},
abstractNote = {Previous investigstions of the mechanical response of porous materials to dynamic loading have been extended to include the shock wave response of a brittle metal. The complex response of berylliums of 85 to 90 percent 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 35 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.},
doi = {},
url = {https://www.osti.gov/biblio/7306231}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 1977},
month = {Fri Jul 01 00:00:00 EDT 1977}
}

Conference:
Other availability
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