An elastic phenomenological material law of technical textile with a nonlinear shear behaviour

In technical textile engineering, macro-level phenomenological modelling effectively describes the material's highly nonlinear behaviour. However, existing material laws concentrate on the normal stiffness in the orthotropic yarns and simplify the shear effect because of the two orders of magnitude difference between shear and normal stiffness. This article introduces an improved phenomenological model that includes nonlinear shear behaviour, and it determines the material parameters with a previously applied data fitting method for exponential functions. The nonlinear shear behaviour is valid for the elastic state, that is, at the service level of the loads. Time-dependent, cyclic loading or plastic behaviour is not considered.

Automated summary

The article introduces an improved phenomenological model in technical textile engineering that effectively describes the material's highly nonlinear behavior, including nonlinear shear behavior. Material parameters are determined using a data fitting method for exponential functions. The nonlinear shear behavior is valid for the elastic state and does not consider time-dependent, cyclic loading, or plastic behavior.