Fluid-Structure Interaction
Using Smooth Particle Hydrodynamics (SPH)

Santiago Pujol, Mete A. Sozen, Ayhan Irfanoglu


Problem Statement

Simulate a thin-wall aluminum container filled with fluid impacting a solid barrier.  Compute the reactive forces on impact and compare with experimental measurements. 

Purpose of the Effort

Calibrate and test the SPH methodology of LS-Dyna simulating fluid/structure interaction.


Propelled by compressed air, a can of liquid is shot at the instrumented target at approximately 80 m/sec.  The can ruptures, spreading the fluid. Impact forces are measured by instrumentation of the target barrier.

Click Images to Enlarge
can before
can after


The problem is set up using LS-Dyna and modeling the liquid with SPH elements.  The can is modeled as a cylinder, the target is modeled as in the experimental setup.  The problem size is approximately 146,000 nodes, and the total computing time was 99 hours on a dual-opteron workstation for a simulation time of 0.011 sec.

Click Images to Enlarge
Setup after 0.0026s after 0.0100s can after
Animations, Low and High Resolutions


This work has been supported in part by NSF grant DSC-0325227.

Last update Sep. 9, 2006