A First Step to Addressing Volumetric Locking in MPM Portable Free Fall Penetrometer Models
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This work aims to make a small step towards understanding the effect volumetric locking has on the impact of a Portable Free Fall Penetrometer (PFFP) into a soil modelled using a Mohr-Coulomb strain softening formulation. To help reduce the amount of volumetric locking, the B-Bar technique presented by Hughes (1980) was implemented for quadrilateral elements. References [1] HUGHES, T. J. R. (1980). GENERALIZATION OF SELECTIVE INTEGRATION PROCEDURES TO ANISOTROPIC AND NONLINEAR MEDIA. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 15(9), 1413–1418. HTTPS://DOI.ORG/10.1002/NME.1620150914.