Tearing propagation of stratospheric airship envelope based on the link model

For high strength fiber airship envelope, a mesostructure model based on link model was built to explore its tearing propagation behavior by considering the friction and adhesion between the warp and weft yarn bundles. Tests with different length, location and angle incision crack specimens were carried out to observe the tearing propagation behavior which resulted in the tear propagation data under tensile tearing instruments. Combined with the mesosopic model and tests data, tearing propagation of the envelope material was simulated via Matlab to verify the model validity and obtain the max tearing values, which are in consistency with the tests, verifying the validity of the model and providing a new method to analyze the envelope tearing propagation behavior and predict the corresponding tearing values.