Determination of buckling loads for wooden beams using the elastic models
Determination of buckling loads for wooden beams using the elastic models
复制标题
使用弹性模型确定木梁的屈曲载荷
DOI：
10.1007/s00419-019-01523-2
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发表时间：
2019
影响因子：
2.8
通讯作者：
P. Beno
中科院分区：
文献类型：
--
作者：
Stanislav Kotšmíd;P. Beno
本文对方木梁的屈曲荷载进行了理论分析和试验研究。对3种不同长度的木梁进行了屈曲试验，根据实测的轴向位移与轴向荷载的关系确定了临界屈曲荷载。采用欧拉-伯努利梁理论和K-S梁理论，推导了梁的临界屈曲载荷的解析解。在推导模型时，考虑了小变形和大变形理论。此外，晶粒取向的影响包括在模型中。结果表明，所选解与实验测得的值相吻合。本文提供了一个数学模型的审查，并给我们的理论和实验之间的比较，随后的建议，为实践。
This paper presents a theoretical and experimental analysis of buckling load of the square wooden beams. The buckling tests were conducted on the wooden beams with three different lengths, and the critical buckling load was determined on the basis of the measured relation between the axial displacement and axial load. Analytical solutions for the critical buckling load of the beams were derived using the Euler–Bernoulli beam theory and Timoshenko beam theory. When deriving the models, both small and large deformation theories were considered. Moreover, the effect of a grain orientation was included in the models. The results show that the selected solution was in agreement with the values measured from the experiment. The paper provides a review of mathematical models and gives us a comparison between the theories and experiments with subsequent recommendations for practice.