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We present experiments on the dynamic buckling and fragmentation of slender rods axially impacted by a projectile. By combining the results of Saint-Venant and elastic beam theory, we derive a preferred wavelength for the buckling instability, and experimentally verify the resulting scaling law for a range of materials including teflon, dry pasta, glass, and steel. For brittle materials, buckling leads to the fragmentation of the rod. Measured fragment length distributions show two peaks near =2 and =4. The nonmonotonic nature of the distributions reflect the influence of the deterministic buckling process on the more random fragmentation processes
Dynamic Buckling and Fragmentation in Brittle Rods Author : J.R. Gladden, N. Z. Handzy, A. Belmonte, and E. Villermaux
| Keywords | : | Dynamic Buckling Fragmentation Brittle Rods |
| file credit | : | J.R. Gladden, N. Z. Handzy, A. Belmonte, and E. Villermaux |
| file type | : | |
| file topic | : | Engineering |
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| viewed | : | 46 times |
| file address | : | biophysics.physics.brown.edu/BPJC/JC%20pdf%20paper%20files/BPJC%202005%20Yifeng/Dynamic%20Buckling%20and%20Fragmentation%20in%20Brittle%20Rods.pdf |
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