Use of notched beams to establish fracture criteria for beryllium

Technical Report · Fri Jan 04 04:00:00 EST 1980

DOI:https://doi.org/10.2172/5711615· OSTI ID:5711615

Mayville, R A

The fracture of an improved form of pure beryllium was studied under triaxial tensile stresses. This state of stress was produced by testing notched beams, which were thick enough to be in a state of plane strain at the center. A plane strain, elastic-incremental plasticity finite element program was then used to determine the stress and strain distributions at fracture. A four-point bend fixture was used to load the specimens. It was carefully designed and manufactured to eliminate virtually all of the shear stresses at the reduced section of the notched beams. The unixial properties were obtained.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5711615
• Report Number(s): UCRL-52866
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALKALINE EARTH METALS
BEAMS
BENDING
BERYLLIUM
BRITTLENESS
BUILDINGS
COMPRESSION
DESIGN
ELEMENTS
EQUIPMENT
FAILURES
FINITE ELEMENT METHOD
FRACTURE PROPERTIES
FRACTURES
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
METALS
NOTCHES
NUMERICAL SOLUTION
STRAIN GAGES
STRAINS
STRESSES
TENSILE PROPERTIES
TESTING