TY - JOUR
T1 - Development of an implicit contact technique for the material point method
AU - González Acosta, José León
AU - Vardon, Philip J.
AU - Hicks, Michael A.
PY - 2021
Y1 - 2021
N2 - An implicit contact algorithm for the material point method (MPM) has been developed to simulate contact. This allows recently developed implicit MPM codes to simulate large-scale deformations and interaction with external bodies. The performance of the method has been investigated and compared to an existing explicit method using benchmark and geotechnical examples. In particular, the proposed formulation has been shown to conserve energy in a similar way to the explicit formulation and reach similar results. The method typically converges to the analytical solution when an adequate time step and mesh size are used, with the time step generally being around ten times larger than the explicit method, although during the contact phase this does not always result in faster computation due to the iterative solution procedure.
AB - An implicit contact algorithm for the material point method (MPM) has been developed to simulate contact. This allows recently developed implicit MPM codes to simulate large-scale deformations and interaction with external bodies. The performance of the method has been investigated and compared to an existing explicit method using benchmark and geotechnical examples. In particular, the proposed formulation has been shown to conserve energy in a similar way to the explicit formulation and reach similar results. The method typically converges to the analytical solution when an adequate time step and mesh size are used, with the time step generally being around ten times larger than the explicit method, although during the contact phase this does not always result in faster computation due to the iterative solution procedure.
KW - Contact simulation
KW - Frictional contact
KW - Implicit scheme
KW - Material point method
KW - Soil-structure interaction
UR - http://www.scopus.com/inward/record.url?scp=85097801840&partnerID=8YFLogxK
U2 - 10.1016/j.compgeo.2020.103859
DO - 10.1016/j.compgeo.2020.103859
M3 - Article
AN - SCOPUS:85097801840
SN - 0266-352X
VL - 130
SP - 1
EP - 16
JO - Computers and Geotechnics
JF - Computers and Geotechnics
M1 - 103859
ER -