Sensitivity Studies on a Punching Wall of IRIS_2010 Benchmark Exercise
Markku Tuomala*, Kim Calonius**, Juha Kuutti**,
Arja Saarenheimo**, and Pekka Välikangas***
*Department of Civil Engineering, Tampere University of Technology, P.O. Box 600, FI-33101 Tampere, Finland
**Technical Research Centre of Finland (VTT), Espoo, Finland
***Radiation and Nuclear Safety Authority (STUK), Helsinki, Finland
A case study in the IRIS_2010 benchmark exercise in the OECD/NEA/CSNI/IAGE framework covered a reinforced concrete wall subjected to impact by a hard steel missile with a mass of 47 kg and an impact velocity of 135 m/s. The considered simply supported square slab was 2 m wide and 25 cm thick. The expected and realized collapse mode was perforation. Tests were carried out with a VTT impact test facility. A VTT team also participated in the blind benchmark exercise. Analyses were carried out using a one-dimensional penetration/perforation model and the Abaqus/Explicit Finite Element (FE) program. Selected calculation results were presented at the IRIS_2010 Workshop. Based on Workshop presentations and discussions it was concluded that the nonlinear analysis of reinforced concrete structures is a challenging task and calculation results are quite sensitive, e.g., to material parameters and modeling assumptions. Various sensitivity studies of this so-called punching test were carried out afterward, and results are presented and discussed in this paper. Overall, results obtained with both the simplified method and the FE method are in relatively good agreement with test results.
-  M. J. Forrestal, B. S. Altman, J. D. Cargile, and S. J. Hanchak, “An empirical equation for penetration depth of ogive-nose projectiles into concrete targets,” International Journal of Impact Engineering, Vol.15, pp. 395-405, 1994.
-  “Abaqus Theory Manual,” version 6.11-1. Dassault Systèmes, 2011.
-  Q. M. Li and X. W. Chen, “Dimensionless formulae for penetration depth of concrete target impacted by a non-deformable projectile,” International Journal of Impact Engineering, Vol.28, pp. 93-116, 2003.
-  J. A. Teland and H. Sjøl, “Penetration into concrete by truncated projectiles,” International Journal of Impact Engineering, Vol.30, pp. 447-464, 2004.
-  X.W. Chen, X. L. Li, F. L. Huang, H. J.Wu, and Y. Z. Chen, “Normal perforation of reinforced concrete target by rigid projectile,” International Journal of Impact Engineering, Vol.35, pp. 1119-1129, 2008.
-  Q. M. Li, S. R. Reid, H. M. Wen, and A. R. Telford, “Local impact effects of hard missiles on concrete targets,” International Journal of Impact Engineering, Vol.32, pp. 224-284, 2005.
-  P. Barr, “Guidelines for the design and assessment of concrete structures subjected to impact,” AEA, 1990.
-  A. K. Kar, “Residual velocity for projectiles,” Nuclear Engineering and Design, Vol.53, pp. 87-95, 1979.
-  A. Vepsä, A. Saarenheimo, F. Tarallo, J.-M. Rambach and N. Orbovic, “IRIS_2010 – Part II: Experimental data,” Transactions, SMiRT-21, Paper ID 520, 6-11 November, 2011, New Delhi, India.
-  N. Orbovic, M. Elgohary, N. Lee, and A. Blahoianu, “Tests on reinforced concrete slabs with pre-stressing and with transverse reinforcement under impact loading,” Transactions of SMiRT-20, August 2009, Espoo, Finland.
-  Comité Euro-International du Béton, “Design of concrete structures,” CEB-FIP-Model-Code 1990, Thomas Telford Ltd, 1993.
-  M. Tuomala, A. Saarenheimo, K. Calonius, P. Välikangas, and A. Vepsä, “Sensitivity Studies on IRIS_2010 Punching Wall,” Transactions, SMiRT-21, Paper ID 832, 6-11 November, 2011, New Delhi, India.
-  C. Y. Tham, “Reinforced concrete perforation and penetration simulation using AUTODYN-3D,” Finite Elements in Analysis and Design, Vol.41, pp. 1401-1410, 2005.
-  H. Sjøl and J. A. Teland, “Perforation of concrete targets,” FFI Rapport 2001/05786, pp. 1-48, 2001.
This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.