Research on the Short-Term Compressive Creep Behavior of the Bamboo Scrimber Based on Different Zener Models

For the gluing process of natural fiber-reinforced composite materials like bamboo scrimber, an obvious creep behavior can be found during the working stage, which must be seriously considered in safety and reliability design. In this paper, the compressive creep performance of the bamboo scrimber, a kind of plywood material, was chosen as the research object. Several groups of compressive creep tests were conducted with various stress levels and samples to record the respective processes of creep strain evolution. Furthermore, different types of models were adopted in studying the compressive viscoelastic behavior of the material. The creep growth is sensitive to the stress level of the creep test, according to the results. Furthermore, the conventional Zener model can work well for simulating the compressive creep strain growth behavior of the bamboo scrimber at high stress levels, but obvious errors can sometimes occur when it is applied to analyze this property under low stress levels. At the same time, using MD (memory-dependent) theory to define the Zener model can pertain to the requirement of accuracy in analyzing the compressive creep property under all load conditions and is more practically useful.