A high order finite element model for vibration analysis of cross laminated timber assemblies

The vibration behavior of cross laminated timber (CLT) components in the low frequency range can be predicted with high accuracy by the finite element method. However, the modeling of assembled CLT components has been studied only scarcely. The three-dimensional p-version of the finite element method, which is characterized by hierachical high order shape functions, is well suited to consider coupling and support conditions. Furthermore, a small number of degrees of freedom can be obtained in case of thin-walled structures by using p-elements with high aspect ratios and anisotropic ansatz spaces. In this paper, a model for CLT assemblies made of volumetric high order finite elements is presented. Two representative types of connections are investigated, one with an elastomer between the CLT components and the other without. The model is validated and suitable ranges for the stiffness parameters of the finite elements which represent the junction are identified.     «

The vibration behavior of cross laminated timber (CLT) components in the low frequency range can be predicted with high accuracy by the finite element method. However, the modeling of assembled CLT components has been studied only scarcely. The three-dimensional p-version of the finite element method, which is characterized by hierachical high order shape functions, is well suited to consider coupling and support conditions. Furthermore, a small number of degrees of freedom can be obtained in ca...     »