Open Access

ARTICLE

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

1 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
2 Dept. of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
3 Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA.
4 Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
5 Dept. of Computer Science, University of Utah, Salt Lake City, UT 84112, USA.
6 Air Force Research Laboratory, Munitions Directorate, Eglin AFB, FL 32542, USA.