Article highlights This work describes a methodology for calibrating and simulating micro-sandwich materials, using an anisotropic elasto-plastic constitutive model.A stress-state dependent damage and failure model is calibrated Cradles for out-of-plane shear and transverse tensile tests.Experimental T-peels tests are used as a validation case.
A great dispersion is found in the force response of the micro-sandwich material, with the highest and lowest force value differing by a factor of approximately 2.Statistical methods are used to analyze the experimental data, and the mean and standard deviation are computed.The numerical models of the T-peel test are able to recreate the response of the experimental data within one standard deviation.
It is concluded that statistically based constitutive and damage/failure models should be developed for a full description of the micro-sandwich Plant Proteins material studied in the present work.