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抗弯强度和抗弯弹性模量是藤材重要的力学性能指标,对藤材的合理利用及产品开发具有重要作用。本文对我国两种主要材用商品藤—单叶省藤(Calamus simplicifolius)和黄藤(Daemonorops margarita)藤材的抗弯弹性模量(MOE)、抗弯强度(MOR)及其变异进行研究,结果表明:1)两种藤材抗弯性能的株间差异不明显,但在株内生长高度方向上的差异极其显著;2)藤材抗弯性能与其生长年份密切相关,离基部越远,生长高度越大,即生长年份越小,藤材的MOE和MOR越小;藤材梢部的抗弯强度仅为基部的1/2;3)单叶省藤材的MOE和MOR与生长高度的多项式相关因子分别达到了0.96和0.98,黄藤材的MOE和MOR与生长高度的多项式相关因子分别达到了0.98和0.99;4)单叶省藤的破坏强度和破坏应变都比黄藤材大,其韧性系数高达黄藤材近4倍。单叶省藤材可作多种用途,而黄藤材则宜整藤利用。
Flexural strength and flexural modulus of elasticity is an important mechanical properties of rattan material, the rational use of rattan and product development has an important role. In this paper, the flexural modulus of elasticity (MOE), flexural strength (MOR) and their variation of the two main materials, Calamus simplicifolius and Daemonorops margarita, were studied. The results showed that: 1) There was no significant difference in the flexural properties between two rattan materials, but the difference in the height of the plant was extremely significant; 2) The flexural behavior of rattan was closely related to its growing year, The higher the growth height is, the smaller the growing year is, the smaller the MOE and MOR of rattan are; the flexural strength of rattan is only 1/2 of the base of the rattan; 3) The correlation coefficient of polynomial reached 0.96 and 0.98 respectively, and the polynomial correlation coefficients of MOE and MOR and growth height of yellow cane reached 0.98 and 0.99, respectively; 4) The damage intensity and failure strain of cane , Its toughness coefficient up to nearly 4 times the yellow cane. Single leaf rattan can be used for a variety of purposes, while the yellow rattan is appropriate to use whole rattan.