Ghorbani, Javad, Chen, Liuxin, Kodikara, Jayantha, Carter, John P., and McCartney, John S. (2022) Improving Efficiency, Stability, and Accuracy of Finite Element Solutions for Solving Dynamic Contact Problems Involving Unsaturated Soils. In: Lecture Notes in Civil Engineering (288) pp. 177-184. From: IACMAG 2022: 16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, 30 August - 2 September 2025, Turin, Italy.

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Abstract

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.

Item ID:	85648
Item Type:	Conference Item (Research - E1)
ISSN:	2366-2557
Copyright Information:	© The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2023, corrected publication 2023.
Date Deposited:	29 May 2025 00:03
FoR Codes:	40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering @ 50% 40 ENGINEERING > 4005 Civil engineering > 400503 Complex civil systems @ 25% 40 ENGINEERING > 4005 Civil engineering > 400599 Civil engineering not elsewhere classified @ 25%
SEO Codes:	12 CONSTRUCTION > 1206 Environmentally sustainable construction activities > 120699 Environmentally sustainable construction activities not elsewhere classified @ 100%
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