NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
The 64th Japan National Congress for Theoretical and Applied
Session ID : OS8-02-03
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OS8-2
Lagrangian Time Derivative of Interface-Reproducing XFEM for Fluid-Shell Interactions
Tomohiro SawadaJunichi Matsumoto
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

This paper presents a time dependent enrichment for an interface-reproducing extended finite element method (XFEM) for flow with sharp interfaces and deformable thin structures such as shells, beams, and membranes. The enrichment is formulated to be consistent to the Lagrangian time derivative of the enrichment function. The numerical data with and without the time dependence are compared to the interface-tracking computation using arbitrary Lagrangian-Eulerian (ALE) coordinates. We found the time dependent enrichment enhances stability and accuracy of the interface-reproducing XFEM for fluid-thin structure interactions.

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© 2017 The Japan Society of Mechanical Engineers
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