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|Title:||Numerical study on craters and penetration of concrete slab by ogive-nose steel projectile|
|Source:||Wang, Z.-l., Li, Y.-c., Shen, R.F., Wang, J.G. (2007-01). Numerical study on craters and penetration of concrete slab by ogive-nose steel projectile. Computers and Geotechnics 34 (1) : 1-9. ScholarBank@NUS Repository. https://doi.org/10.1016/j.compgeo.2006.09.001|
|Abstract:||In the design of defense structures, concrete slabs are often used to provide protection against incidental dynamic loadings such as the impact of a steel projectile. In the present study, the Taylor-Chen-Kuszmaul (TCK) continuum damage model is further improved and successfully implemented into the dynamic finite element code, LS-DYNA, with erosion algorithm. The numerical predictions of impact and exit craters of concrete slab as well as the residual velocity of projectile using the newly-implemented numerical tool show good agreement with experimental observations. The performance of the modified TCK model is evaluated by comparing with the material Type 78 (Mat_Soil_Concrete) and Type 111 (Mat_Johnson_Holmquist_Concrete) available in LS-DYNA. The effect of CRH (caliber-radius-head) ratio of the ogive-nose projectile on the impact crater is also investigated using the new numerical tool. Finally, the maximum penetration depth of steel projectile into a concrete slab is studied and an empirical formula is proposed. © 2006 Elsevier Ltd. All rights reserved.|
|Source Title:||Computers and Geotechnics|
|Appears in Collections:||Staff Publications|
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