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.

Experiment

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.

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experimental  setup	can before impact	can after impact

Simulation

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.

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Setup	after 0.0026s	after 0.0100s	can after 0.0100s
Animations, Low and High Resolutions

Support

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