运用经典层合板理论和一阶剪切变形理论预测了单板定向刨花板复合集装箱底板的有效弹性模量、跨中正应力和挠度,并将预测结果与有限单元法所得的结果进行了比较。 用有限单元法对3种不同厚度木单板复合的集装箱底板的弯曲性能进行了分析。结果表明,理论预测与有限元分析结果基本相符;采用较大厚度比的单板不但可有效提高复合集装箱 底板整体的刚度性能,而且可显著减小结构中的正应力。
Abstract
Classical laminated plate theory(CLPT)and the firstorder shearing deformation theory(FSDT)were used for predicting the effective modulus of elasticity, stress and deflection of the beam in midspan for oriented strand boardveneer composite container flooring(OSBVCCF). They were compared with the results by the finite element method(FEM). FEM also analyzed the bending properties of the container flooring for three different thickness of wood veneer. The results demonstrated that theoretical predictions matched with the results of FEM. The larger thickness ratio of veneer composite container flooring will not only effectively improve the overall performance of stiffness but also reduce the normal stress in the structure significantly.
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参考文献
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基金
收稿日期:2009-10-19修回日期:2010-06-29基金项目:中加合作项目(CCCF20072)作者简介:何长江(1983—),硕士生。*王泉中(通信作者):教授。Email: wqz@njfu.com.cn。 引文格式:何长江,王泉中,许斌.