The material point method (MPM) is a numerical tool able to model very large deformations in solid mechanics such as geotechnical problems. To date, soil-tool interaction modelling in theMPMis somewhat difficult, especially when the tool position is not stationary. Usually, the tool’s boundaries do not coincide with the MPM grid and therefore boundary conditions cannot be imposed directly on the grid nodes. An implicit approach based on a penalty type method to impose essential boundary conditions in the MPM has been developed and used in the paper to demonstrate how to model frictionless soil-tool interaction mechanism . This approach assumes that the tool is a rigid body as the deformation of the tool boundaries are insignificant. The same approach can also be used to model the interaction between structures and soil such as foundations.
|Title of host publication||Proceedings of the 25th UKACM Conference on Computational Mechanics|
|Place of Publication||United Kingdom|
|Publisher||University of Birmingham|
|Number of pages||4|
|Publication status||Published - Apr 2017|
|Event||25th UKACM Conference on Computational Mechanics - University of Birmingham, Birmingham, United Kingdom|
Duration: 11 Apr 2017 → 13 Apr 2017
|Conference||25th UKACM Conference on Computational Mechanics|
|Period||11/04/17 → 13/04/17|
- material point method
- essential boundary conditions
- soil-tool modelling
- offshore geotechnics
Cortis, M., Coombs, W. M., Augarde, C. E., Robinson, S., Brown, M., & Brennan, A. (2017). The modelling of soil-tool interaction using the material point method. In Proceedings of the 25th UKACM Conference on Computational Mechanics (pp. 211-214). University of Birmingham.