TY - JOUR
T1 - Effects of interface and tensile properties in the dynamic fracture of layered structures
AU - McCoy, J. H.
AU - Kumar, A. S.
AU - Stubbins, J. F.
N1 - Funding Information:
This was supported, in part, by the US Department of Education under the Graduate Assistantship in Areas of National Needs (GAANN) fellowship program.
PY - 1999/4/1
Y1 - 1999/4/1
N2 - Finite element modeling of crack extension under impact was performed to study the suitability of layered composite structures in plasma-facing and primary wall structures for ITER and other fusion devices. The layers may consist of dissimilar metal alloys, each of which performs a necessary design function for sputtering resistance, heat removal, and structural integrity. Several layered structures with varying material properties were modelled using finite element analysis. Compared to monolithic solid bars with the same mechanical properties, layered structures with frictional interfaces dissipate more energy before a pre-crack normal to the interface can propagate. For these layered structures, there is an optimum for the coefficient of friction that provides maximum resistance to crack extension.
AB - Finite element modeling of crack extension under impact was performed to study the suitability of layered composite structures in plasma-facing and primary wall structures for ITER and other fusion devices. The layers may consist of dissimilar metal alloys, each of which performs a necessary design function for sputtering resistance, heat removal, and structural integrity. Several layered structures with varying material properties were modelled using finite element analysis. Compared to monolithic solid bars with the same mechanical properties, layered structures with frictional interfaces dissipate more energy before a pre-crack normal to the interface can propagate. For these layered structures, there is an optimum for the coefficient of friction that provides maximum resistance to crack extension.
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U2 - 10.1016/S0022-3115(98)00901-5
DO - 10.1016/S0022-3115(98)00901-5
M3 - Article
AN - SCOPUS:0032634721
SN - 0022-3115
VL - 270
SP - 129
EP - 133
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -