铝-木复合材料抗弯性能预测与分析

发布时间：2019-01-24 07:41

【摘要】：将铝合金薄板和定向刨花板(OSB)以层叠方式复合得到新型铝-木复合材料(WAC),对不同组坯的铝-木复合材料抗弯性能进行研究,通过三点弯曲加载试验得到铝-木复合材料弯曲破坏形式和抗弯弹性模量,运用经典层合理论建立抗弯弹性模量预测模型,并进行验证。结果表明:将铝合金薄板叠加在最外层的铝-木复合材料结构荷载能力有很大提高,并且纵向弹性模量(MOE)提高了156.55%,横向弹性模量提高了192.79%。考虑胶层影响,在经典层合模型的基础上对铝-木复合材料的弹性模量进行预测,所得预测值和试验值之间相对误差在10%以内。可见经典层合模型可以很好预测铝-木复合材料的弹性模量,铝-木复合材料有着良好的抗弯性能,将铝合金薄板叠加在最外层的结构是最为合理的。
[Abstract]:A new type of Al-wood composite (WAC), was prepared by laminating aluminum alloy sheet and oriented particleboard (OSB) to study the flexural properties of Al-wood composites with different groups of billets. The bending failure mode and flexural modulus of Al-wood composites were obtained by three-point bending test. The prediction model of flexural elastic modulus was established by using classical lamination theory and verified. The results show that the loading capacity of the aluminum alloy sheet superimposed on the outermost aluminum-wood composite structure is greatly improved, and the longitudinal elastic modulus (MOE) and the transverse elastic modulus (MOE) are increased by 156.55 and 192.79 respectively. Considering the influence of rubber layer, the elastic modulus of Al-wood composite is predicted on the basis of classical lamination model. The relative error between the predicted value and the experimental value is less than 10%. It can be seen that the classical lamination model can well predict the elastic modulus of Al-wood composites, and the Al-wood composites have good flexural properties, and it is most reasonable to superposition the aluminum alloy sheet on the outermost structure.
【作者单位】：浙江农林大学工程学院;美国农业部林务局林产品研究所;中国林业科学研究院木材工业研究所国家林业局木材科学与技术重点实验室;
【基金】：国家林业公益性行业科研专项(201104004)
【分类号】：TB333

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