Nonlinear compression behavior research of molded pulp material

The molded pulp material is a popular environmentally friendly material, and many countries are strengthening its application in packaging. This paper aims at the molded pulp material’s mechanical properties. A compression test, which fits the actual work conditions is applied. And then use the standard linear solid (SLS) model to analyze the properties. The results show that the mechanical properties of molded pulp material are significantly different between the surface plane and the side plane, due to the layered distribution of the fibers. In the SLS model curve fitting results, the stiffness of the parallel spring element under edge plane load is significantly greater than that under surface plane load. This indicates long-term stable loads are more suitable for materials designed with loads parallel to the surface, the dynamic vibration energy needs to be designed on the material’s surface.