Title : Mesoscopic mechanisms and macroscopic behavior of internal erosion in sandy soil. Zhejiang University, China. Defense on March 2021.
Supervisor: Li-Zhong WANG, Collaborator: Zhen-Yu YIN.

Title : Two-yield Surface Progressive Hardening Elastoplastic Model and Accumulative Deformation Law for Offshore Wind Turbine Pile. Hunan University, China. Defense on June 2021.
Supervisor: Ren-Peng CHEN, Co-supervisor: Zhen-Yu YIN.

Title : CFD-DEM Simulation Of Seepage Erosion In Sandy Soil And Application Analysis Of Water Leakage In Shield Tunnel. Tongji University, China. Defense on August 2021.
Supervisor: Jiangu Qian, Co-supervisor: Xiaoqian Gu, Zhen-Yu Yin.

Title : Study of soil behaviour subjected to an internal erosion process. University of Nantes, France. Defense on October 2019.
Supervisor: Didier MAROT, Co-supervisor: Zhen-Yu YIN.

Title : A constitutive model for natural clays: from laboratory testing to modelling of offshore monopiles. Received double degree between University of Liège (France) and Ecole Centrale de Nantes (France). Defense on September 2019. Supervisor: Panagiotis Kotronis, Co-supervisors: Frédéric Collin, Zhen-Yu YIN.

Title : Size Effect and Anisotropy in Transversely Isotropic Rocks. The Hong Kong Polytechnic University, Hong Kong, China. Defense on July 2019.
Supervisor: Zhen-Yu YIN.

Title : Numerical analyses of the multi-physics problem of sinkholes in the vicinity of a dike or a linear geo-structure. Ecole Centrale de Nantes, France. Defense on July 2019.
Supervisor: Pierre-Yves HICHER, Co-supervisors: Zhen-Yu YIN, Farid LAOUAFA.

Title : Numerical investigation of caisson foundation in sand under combined monotonic loadings for offshore wind turbines. Ecole Centrale de Nantes, France. Defense on December 2018.
Supervisor: Panagiotis KOTRONIS, Co-supervisor: Zhen-Yu YIN.

Title : Numerical study of strain localization in geotechnical structures under the framework of micro-polar theory. Ecole Centrale de Nantes, France. Defense on March 2018.
Supervisor: Zhen-Yu YIN, Co-supervisor: Pierre-Yves HICHER.

Title : Multi-scale modeling of granular soils: from grain scale to geotechnical structures. Ecole Centrale de Nantes, France. Defense on December 2017.
Supervisor: Zhen-Yu YIN, Co-supervisor: Pierre-Yves HICHER.

Title : Mechanical modelling of sand considering simple shear condition and its application to pile foundation. Ecole Centrale de Nantes, France. Defense on December 2017.
Supervisor: Pierre-Yves HICHER,, Co-supervisor: Christophe DANO, Collaborator: Zhen-Yu YIN.

Title : Study on the creep behaviour of clay under complex triaxial loading in relation to the microstructure. University of Lorraine, France. Defense on December 2017.
Supervisor: Mahdia Hattab, Co-supervisor: Zhen-Yu YIN.

Title : Multi-scale modelling of granular materials in application to geotechnical engineering problems. University of Grenoble Alpes, France. Defense on October 2017.
Supervisor: François NICOT, Co-supervisor: Zhen-Yu YIN.

Title : Parameter identification and model selection of soil models using genetic algorithm. Ecole Centrale de Nantes, France. Defense on September 2016.
Supervisor: Zhen-Yu YIN, Co-supervisor: Shuilong SHEN.

Title : Experimental study on the mechanical behavior of a stiff clay subjected to monotonic and cyclic loading. Ecole Centrale de Nantes, France. Defense on July 2014.
Supervisor: Pierre-Yves HICHER, Co-supervisor: Christophe DANO, Collaborator: Zhen-Yu YIN.

Title : Time-dependent behaviour and uniqueness of its key parameters for soft clays. Received double degree between Ecole Centrale de Nantes (France) and Shanghai Jiao Tong University (China). Defense on July 2014. Supervisor: Zhen-Yu YIN, Co-supervisor: Xiaohe XIA.

Title : Modelling the influence of the particle size distribution on the critical state mechanical behaviour of granular materials. Received double degree between Ecole Centrale de Nantes (France) and Shanghai Jiao Tong University (China). Defense on July 2014. Supervisor: Zhen-Yu YIN, Co-supervisor: Xiaohe XIA.