Calibrating the Abaqus Crushable Foam Material Model using UNM Data

Technical Report · Thu Feb 27 04:00:00 EST 2014

DOI:https://doi.org/10.2172/1122031· OSTI ID:1122031

Schembri, Philip E. ^[1]; Lewis, Matthew W. ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Triaxial test data from the University of New Mexico and uniaxial test data from W-14 is used to calibrate the Abaqus crushable foam material model to represent the syntactic foam comprised of APO-BMI matrix and carbon microballoons used in the W76. The material model is an elasto-plasticity model in which the yield strength depends on pressure. Both the elastic properties and the yield stress are estimated by fitting a line to the elastic region of each test response. The model parameters are fit to the data (in a non-rigorous way) to provide both a conservative and not-conservative material model. The model is verified to perform as intended by comparing the values of pressure and shear stress at yield, as well as the shear and volumetric stress-strain response, to the test data.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1122031
• Report Number(s): LA-UR--14-21257
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
CRUSHABLE FOAM
MICROBALLOONS
SYNTACTIC FOAM