早园竹的力学性能特点及测试方法研究

通过该项研究结果表明,采用3点弯曲方法与顺纹压剪方法测定的竹材弦面剪切强度所得结果有着良好的拟合性;早园竹的力学性能在三度竹时达到最高峰,四度竹的弹性模量显著下降,抗弯强度和弹性模量略有下降;采用3种方法测试(沿竹青方竹黄和弦向加压)结果表明,3种测试数值结果具有良好的相关性。对早园竹采用不同测试方法所得的力学结果表明,对小径级竹材可以参照单向纤维增强材料的方法测定其力学性能,为小径竹材力学性能测试以及相关标准的制定提供可以借鉴的方法。

Study on characteristics of the mechanical properties & test methods of Phyllostachys praecox

The mechanical properties and test methods of Phyllostachys praecox were studied in this paper. The result showed that the mechanical properties of Ph. praecox were the best when it was 3 years old. The testing results of MOR, MOE and SS from three different methods (pressure direction in out layer, inner layer and tangential) had a good relativity.