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MECHANICAL RELEVANCE OF STRUCTURAL FEATURES OFWOOD AT DIFFERENT OBSERVATION SCALES: INVESTIGATIONS BASED ON MULTISTEP HOMOGENIZATION

机译：不同观察尺度木材结构特征的机械相关性：基于多步均匀化的研究

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Softwood appears as a solid-type composite material at a length scale of some micrometers, while it resembles an assembly of plate-like elements arranged in a honeycomb fashion at the length scale of some hundreds of micrometers. In this paper, we elucidate the main load carrying mechanisms resulting from these different structural features by means of a micromechanical model, based on tissue-independent stiffness properties of cellulose, lignin, and water. The model comprises three homogenization steps, two applying continuum micromechanics and one the unit cell method. The resulting (orlhotropic) stiffness estimates deviate, on average, by less than 10 %from corresponding experimental results for a variety of softwood species.

机译：软木显示为一个固体型复合材料，其长度为一些微米，而它类似于板状元件的组件，其在蜂窝方式中以几百微米的长度刻度布置成蜂窝方式。在本文中，基于微机械模型，阐明了由这些不同结构特征产生的主要负载承载机制，基于微机械模型，基于纤维素，木质素和水的组织无关的刚度特性。该模型包括三个均质化步骤，两个施加连续微机械和单位细胞方法。由此产生的（OrlothiC）刚度估计平均偏离了各种软木物种的相应实验结果的小于10％。

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《International Symposium on Wood Machining》|2007年||共4页
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Karin Hofstetter; Christian Hellmich; Josef Eberhardsteiner;
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中图分类木材加工工业、家具制造工业;
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MECHANICAL RELEVANCE OF STRUCTURAL FEATURES OFWOOD AT DIFFERENT OBSERVATION SCALES: INVESTIGATIONS BASED ON MULTISTEP HOMOGENIZATION

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