The compressive strength perpendicular to the grain is one of those wood properties that are important for structural design but are difficult to tackle due to its semi-plastic behaviour. It depends on deformation, the specimen type and loading condition. For long no common definition for the standard compressive strength was agreed. A comprehensive survey of research work is given given by Augustin and Schickhofer [1], Kollmann [2], Gehri [3], Madsen [4] and Blass and Gorlacher [5]. Some of the empirical models proposed were by Madsen [4], Blass and Gorlacher [5] and Riberholt [6]. A physical model was presented by Van der Put [7] in 1988, based on plasticity theory. He showed the ability and accuracy of his model by evaluation of old test data. This papers compares this physical model with the empirical model by Blass and Gorlacher [5], which currently is proposed for adoption in Eurocode 5. The test data used for the evaluation is not only the results by Van der Put quoted from [7] but new data recently became available is added to lend ore credibility to the analyse. It is concluded that the empirical model is conservative and less reliable compared to the physical model by Van der Put.
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机译：垂直于木纹的抗压强度是木材的一种特性，对结构设计很重要，但由于其半塑性特性而难以解决。它取决于变形，样本类型和加载条件。长期以来，没有商定标准抗压强度的通用定义。 Augustin和Schickhofer [1]，Kollmann [2]，Gehri [3]，Madsen [4]以及Blass和Gorlacher [5]对研究工作进行了全面的调查。 Madsen [4]，Blass和Gorlacher [5]和Riberholt [6]提出了一些经验模型。基于可塑性理论，Van der Put [7]在1988年提出了一个物理模型。他通过评估旧测试数据来展示其模型的能力和准确性。本文将这种物理模型与Blass和Gorlacher [5]的经验模型进行了比较，后者目前在欧洲规范5中提出采用。用于评估的测试数据不仅是[7]中引用的Van der Put的结果，而且添加了最近可用的新数据，以提高分析的矿石可信度。结论是，与范德普特的物理模型相比，经验模型是保守的，可靠性较差。
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