- Title
- Improving Efficiency, Stability, and Accuracy of Finite Element Solutions for Solving Dynamic Contact Problems Involving Unsaturated Soils
- Creator
- Ghorbani, Javad; Chen, Liuxin; Kodikara, Jayantha; Carter, John P.; McCartney, John S.
- Relation
- IACMAG: International Conference of the International Association for Computer Methods and Advances in Geomechanics. Proceedings of the 16th International Conference on Computer Methods and Advances in Geomechanics, Vol. 3 (Turin, Italy 30 August - 2 September, 2022) p. 177-184
- Publisher Link
- http://dx.doi.org/10.1007/978-3-031-12851-6_22
- Publisher
- Springer
- Resource Type
- conference paper
- Date
- 2023
- Description
- The paper investigates the efficiency, stability, and accuracy of finite element solutions based on the mortar approach in solving dynamic contact problems that involve unsaturated soils. We employ a fully coupled finite element solution and a recently developed bounding surface model for describing the hydro-mechanical hysteresis of unsaturated soils. The paper discusses a key source of instability in numerical simulations of this class of problems which is stress overshooting. We evaluate the efficiency of a solution for this problem and discuss the impact of this solution on improving the accuracy and stability of numerical simulations. Numerical simulations are presented for verification and analysis of efficiency, stability, and accuracy.
- Subject
- stress overshooting; unsaturated soils; dynamics; plasticity; finite element analysis; contact mechanics
- Identifier
- http://hdl.handle.net/1959.13/1489073
- Identifier
- uon:52609
- Identifier
- ISBN:9783031128509
- Language
- eng
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