Research on the Numerical Simulation of the Properties of Bamboo Bundle Glulam

Abstract

The properties of bamboo bundles Glulam are directly related to the thickness and binding properties of bamboo bundles. In this paper, a three dimension finite element model of bamboo bundles Glulam is established. The model used Hashin criterion and continuous damage mechanics to analyze the failure and damage evolution of bamboo bundles, cohesive zone model to analyze the failure in adhesive layer between bundles. The stress changes in different layers of bamboo bundles at different time under displacement load were studied. Fiber tensile failure of bamboo bundles mainly occurs in two 0° bamboo bundles layers. The stress peak value of 0° bamboo bundles layer reaches 160MPa.There is no tensile failure in the 90° bamboo bundles layer. Cracking occurs in all three adhesive layers, and the first and third adhesive layer occurs before the second layer. The model established is helpful for the design and application of bamboo glulam.