Publicações

Yin, QL., Dong, S., Jiang, F.Y. e Guedes Soares, C. (2019), Spudcan Penetration Simulation Using CEL Method with Thermo-Mechanical Coupled Analysis, Journal of Ocean University of China, Vol. 18(2), pp. 317-327

The present paper mainly provides a brand new modeling technique in Coupled Eulerian +agrangian (CEL) method for geotechnical problems accompanied with large deformation. This technique is intended to solve the updating problem of soil mechanical properties during spudcan penetration in normally consolidated clay soil. In CEL models, the normal way of assigning the increasing shear strength profile with depth (NA method) is defective due to its Eulerian framework, while adopting the user subroutine is of complexity and difficulty. In this paper, we put forward a new method for updating soil material properties by introducing the hermo $echanical coupled analysis (TMCA method). Details of the establishment of CEL models are described beforehand, and optimal penetration velocity and minimum mesh size are determined hrough parametric studies. The reasonability and accuracy are verified through the comparison with soil flow configuration and penetration resistance of a centrifuge test. In addition to the CEL model, the RITSS method has been applied for a better comparison. In the premise of a satisfying accuracy of the CEL model, the NA and TMCA methods implemented in CEL models and RITSS method are first adopted in weightless soil. Comparison with previous studies shows that TMCA method is applicable in updating material properties and predicting penetration resistance. Then the TMCA method is applied to soils with self 'eight and different shear strength profiles. Results show that proposed TMCA method is capable of modeling the large deformation problem of pudcan penetration in non homogeneous clay.

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