centrifuge 2 - University of Sydney Seminar 19 August 2009...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
University of Sydney Seminar 19 August 2009 Anirban De, Ph.D., P.E., Manhattan College, New York 1 Use of a Geotechnical Centrifuge to Study the Effects of Surface Explosions Anirban De, Ph.D., P.E. Associate Professor Department of Civil Manhattan College Bronx, New York Presented at: School of Civil Engineering The University of Sydney 19 August 2009 Acknowledgements • Research funded by the Civil & Mechanical Systems (CMS) Program of the National Science Foundation (NSF), Dr. Richard Fragaszy, Program Director, through: – Small Grants Exploratory Research (SGER) – Research Opportunity Award (ROA) – Research Experience for Undergraduates (REU) • Prof. Thomas F. Zimmie of RPI – research collaborator • Undergraduate and graduate student researchers from: – Manhattan College – Rensselaer Polytechnic Institute
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
University of Sydney Seminar 19 August 2009 Anirban De, Ph.D., P.E., Manhattan College, New York 2 Outline •I n t r o d u c t i o n • Background on Centrifuge Modeling • Scaling of Explosions on Centrifuge • Cratering • Experimental Models and Results – Earth dams
Background image of page 2
University of Sydney Seminar 19 August 2009 Anirban De, Ph.D., P.E., Manhattan College, New York 3 RPI Centrifuge Radius = 3 m, Capacity = 150 g-tons Outline •I n t r o d u
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
University of Sydney Seminar 19 August 2009 Anirban De, Ph.D., P.E., Manhattan College, New York 4 Principles of Centrifuge Modeling • Prototype at 1g environment H Stress, σ = ρ gH g Prototype ρ = density g = accln. due to gravity Principles of Centrifuge Modeling H/N Stress, σ = ρ gH/N g • 1:N scale model at 1g environment Model
Background image of page 4
University of Sydney Seminar 19 August 2009 Anirban De, Ph.D., P.E., Manhattan College, New York 5 H/N Ng • 1:N scale model at Ng environment (on a centrifuge) Centrifuge Model Stress, σ = ρ • Ng H/N = ρ gH σ model = σ prototype Principles of Centrifuge Modeling Principles of Centrifuge Modeling • Compare stresses σ model = σ prototype H σ = ρ gH g Prototype H/N σ = ρ • Ng H/N = ρ gH Ng Centrifuge Model
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
University of Sydney Seminar 19 August 2009 Anirban De, Ph.D., P.E., Manhattan College, New York 6 Principles of Centrifuge Modeling H Vertical stress = ρ gH H/N Vertical stress = ρ( Ng)(H/N) = ρ gH 1 g N g Stresses at corresponding points are equal in model and prototype CENTRIFUGE MODEL built to 1:N scale PROTOTYPE σ model = σ prototype Engineering Behavior of Soil Materials – Function of Stress Level • Therefore, it is important that prototype stresses be modeled correctly in order to simulate other phenomena in the model.
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/19/2010 for the course CIVL 306455301 taught by Professor Mudiliu during the Three '09 term at University of Sydney.

Page1 / 38

centrifuge 2 - University of Sydney Seminar 19 August 2009...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online