Abstract
The
structural response assessment of reinforced concrete slabs subjected
to impulsive loads due to a detonation of an explosive is an
essential task for the design of blast resistant concrete structures.
Nonlinear dynamic finite element methods and analytical modeling
provide a valuable tool for predicting the response and assessing the
safety of a reinforced concrete component. The proposed Finite
Element analysis and analytical modeling approaches were validated
using a series of shock tube tests conducted on conventionally
constructed and high strength reinforced concrete slabs by the
University of Missouri Kansas City at the Engineering Research and
Design Center, U.S. Army Corps of Engineers in Vicksburg,
Mississippi. The aim of the paper is to present the modeling
techniques adopted in both the Finite Element and analytical modeling
approaches in order to conduct the structural response assessment of
RC slabs subjected to impulsive loads due to detonations. The
numerical modeling was conducted utilizing LS-Dyna®
finite element software package. The analytical approach utilized a
fiber analysis method coupled with a single degree of freedom time
stepping method. The constitutive models, loading and boundary
conditions utilized are discussed in detail.
Keywords:
Analytical Modeling; Blast Blind Prediction Contest 2012; Blast
Engineering; Finite Element Analysis; Fiber Analysis; SDOF Analysis.
1
P.E., Ph.D., Tokyo Polytechnic University, Atsugi, Kanagawa, Japan,
Email: pierluigi.olmati@gmail.com
2
Graduate Student Researcher. Department of Civil and Env. Engr.,
Lehigh University ATLSS Center, 117 ATLSS Dr., Bethlehem, PA 18015,
USA, Email: patrick.trasborg@gmail.com
3
Ph.D., P.E., Associate Professor. Department of Civil and
Env. Engr., Lehigh University ATLSS Center, 117 ATLSS Dr.,
Bethlehem, PA 18015, USA, Email: cjn3@Lehigh.edu, Phone:
610-758-6229
4
P.E., Ph.D., Assistant Professor, Department of Civil and
Environmental Engineering, Politecnico di Milano, Piazza L. da Vinci
32 20133 Milan (Italy), Email: luca.sgambi@polimi.it
5
P.E., Ph.D., Full Professor, Sapienza Università di Roma, School of
Civil and Industrial Engineering, Via Eudossiana 18-00184 Rome
(Italy), Email: franco.bontempi@uniroma1.it
Nessun commento:
Posta un commento