Ju Liu

My research focuses on constitutive modeling and computational mechanics of soft materials undergoing large deformation. In particular, we develop theoretical and computational frameworks for finite-strain inelasticity based on generalized strain measures. By revisiting classical kinematic assumptions in inelasticity, our work explores alternative formulations inspired by the Green–Naghdi framework and Hill’s concept of generalized strains, enabling flexible separation of elastic and viscous mechanisms without relying on intermediate configurations.

Another aspect of my work concerns the construction and calibration of models with improved predictive capability. By introducing generalized Landau invariants and micromechanically motivated strain measures, I establish a modeling framework that unifies several classical model families and provides a micro-to-macro interpretation of nonlinear elasticity. Together with a multi-stage calibration strategy, this approach enables robust parameter identification and accurate prediction of multiaxial material responses from limited experimental data.