Study on the Constitutive Relation of Compound Package Material Made of Plant Straw Texture

Firstly, the shape function under compared density is fitted based on the experimental data of plant straw texture compound material. Secondly, the compress constitutive relation is established considering material density, strain ratio and the parameters of the model are successful to identify. The correctness of model is proved by contrasting of calculated and experimental data. This research has provided important theory reference for the cushioning material package design, calculation of finite element and further study on cushioning property of plant straw texture material