Steel spheres 11 mm in diameter struck hemispherical and cylindrical targets at 3 km/s. Materials were AlSl 1020 and 4340. Tensile strength of these materials at strain rates of .0001/s to 1000/s was determined and important rate effects were observed. Peak particle velocity as a function of range and angle was measured by a fly-off plate technique. Peak stress was calculated from these data. Failure modes were determined from post-impact analysis of targets. Targets less than 6 cm diameter were totally fragmented. 8 cm diameter hemispheres failed in bi-axial tension. 4 cm thick hemispheres failed by planar spall. Large targets did not undergo gross tensile failure. (Kursetz)
Impact induced tensile failures in steel
Aufprallausgeloeste Versagensfaelle der Spannungsbereiche bei Staehlen
US Government Research Reports ; Feb ; 1-55
1979
55 Seiten
Report
Englisch
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