FE modelling of light weight wooden assemblies – Parameter study and comparison between analyses and experiments
FE modelling of light weight wooden assemblies – Parameter study and comparison between analyses and experiments
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轻质木质组件的有限元建模 – 参数研究以及分析与实验之间的比较
DOI：
10.1016/j.engstruct.2014.04.028
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发表时间：
2014
影响因子：
5.5
通讯作者：
T. Ekevid
中科院分区：
文献类型：
--
作者：
Å. Bolmsvik;Andreas Linderholt;A. Brandt;T. Ekevid
本研究采用有限元分析的方法，对先前实验研究过的模型结构进行了分析。目的是对全尺寸木结构的试验和分析结果进行关联和标定，并对两者的固有振型和加速度水平进行比较。在文献中发现，用于轻质木结构的材料性能存在很大的分散性。因此，在这项研究中，进行了参数评估，以显示不同的性能如何影响结构的动力性能。结果表明，木梁材料的性能对轻木结构有限元模型的性能影响最大，对两种类型的节点进行了建模和评估：采用系杆连接来模拟螺纹连接，用弹簧/仪表盘单元来表示地板和墙体之间的弹性连接。用于模拟连接处弹性体的弹簧和仪表盘在轴承方向上工作良好，但需要改进以获得正确的旋转刚度、剪切运动和摩擦。复杂的木结构中仍有许多未知参数有待调查。然而，本文提供的结果增加了用于复杂木结构有限元建模的数据。
A finite element (FE) analysis of a model representing a mock-up structure previously investigated experimentally is investigated in this study. The aim is to make a correlation and calibration between test and analysis of the full scale wooden structure; both eigenmodes and acceleration levels are compared. Large scatter is found in material properties used for light weight wooden structures in literature. In this study, a parameter evaluation is therefore made to show how different properties influence the dynamic behaviour of the structure. It is shown that the wood beam material properties influence the behaviour of the light weight wooden structure FE model most.Two types of junctions are modelled and evaluated; a tied connection is used to simulate screwed junctions and spring/dashpot elements are used to represent elastomer junctions between the floor and the walls. The springs and dashpots used to model the elastomer in the junction work well in the bearing direction but need to be improved to obtain correct rotational stiffness, shear motion and friction. There are still many unknown parameters in a complex wooden structure that remain to be investigated. However, the results presented in this paper add data to be used for FE modelling of a complex wooden structure.