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Lib Stress

2019-2021

The project is aimed at analysing the thermal behaviour and structure response of lithium ion cells during charge and discharge cycles. Deformation induced by insertion of the lithium in the electrodes under constraints and high temperatures can generate stresses, which will lead to crack or microfracture of the electrode materials. The advanced smoothed finite element, which is more accurate than standard finite element method for solving thermoelastic problems, will be employed to gain insight about the temperature and stress distributions of cells during charge and discharge cycles. The fracture of electrode material will be simulated using the phase field model, which is different from discrete fracture and continuum damage models and ideal for dealing with branch crack and multiple crack problems.

(2018-2020)