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An Improved Contact Algorithm for the Material Point Method and Application to Stress Propagation in Granular Material

S.G. Bardenhagen1, J.E. Guilkey2, K.M. Roessig3, J.U. Brackbill4, W.M. Witzel5, J.C.Foster6

Dept. of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112, USA. Presently on leave from Group ESA-EA, MS P946, Los Alamos National Laboratory, Los Alamos, NM
Dept. of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA.
Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
Dept. of Computer Science, University of Utah, Salt Lake City, UT 84112, USA.
Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA.

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