TY - JOUR
T1 - Creep of open-cell Voronoi foams
AU - Huang, J. S.
AU - Gibson, L. J.
N1 - Funding Information:
We are grateful for the financial support of the Advanced Research Projects Agency through a MURI award (Office of Naval Research Contract No. N-00014-1-96-1028) and of the National Institutes of Health (National Institute of Arthritis and Musculo-Skeletal and Skin Diseases (1-RO1-AR41894-02). We are grateful for software provided by the University of Minnesota Geometry Center and by Dr A.M. Kraynik of Sandia National Laboratories.
PY - 2003/1/2
Y1 - 2003/1/2
N2 - The power-law creep of open-cell Voronoi foams is calculated using finite element analysis. The results are used to determine the geometrical constants in the power-law creep model for an open-cell foam with a random microstructure. In some foams, individual struts may be missing, either through fracture, as is the case in some metallic foams, or through resorption, as is the case in osteoporotic trabecular bone. Analysis of the effect of random removal of struts within the foam on the creep rate indicates that it can have a dramatic effect: removal of only a few percent of the struts can increase the creep rate by one to two orders of magnitude.
AB - The power-law creep of open-cell Voronoi foams is calculated using finite element analysis. The results are used to determine the geometrical constants in the power-law creep model for an open-cell foam with a random microstructure. In some foams, individual struts may be missing, either through fracture, as is the case in some metallic foams, or through resorption, as is the case in osteoporotic trabecular bone. Analysis of the effect of random removal of struts within the foam on the creep rate indicates that it can have a dramatic effect: removal of only a few percent of the struts can increase the creep rate by one to two orders of magnitude.
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U2 - 10.1016/S0921-5093(02)00152-1
DO - 10.1016/S0921-5093(02)00152-1
M3 - Article
AN - SCOPUS:0037413741
SN - 0921-5093
VL - 339
SP - 220
EP - 226
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 1-2
ER -