南京林业大学学报（自然科学版）Issue(5)：20-24,5.DOI:10.3969/j.issn.1000-2006.2014.05.005
兴安落叶松成熟材指接材抗拉破坏载荷力学模型
Modeling longitudinal tensile failure load of Larix gmelinii mature wood finger-jointed lumber
摘要
Abstract
To establish and verify the longitudinal tensile failure load ( LTF) mechanical model of Larix gmelinii mature finger-jointed wood, the properties of earlywood( EW) and latewood( LW) were involved. In addition, it considered den-sity as the major factor influencing Larix gmelinii mature wood mechanical properties. The verification results of the model showed that it was possible to build mechanical model of LTF based on different properties of EW and LW. The model of finger-jointed LTF was suitable for Larix gmelinii mature wood, which was verified by the specimen with the node geometric parameters including 27.5 mm of the length, 7.5 mm of the bottom, 2.25 mm of the top, and the angle of 95° between slope and bottom. However, it couldn�t predict the LTF of Larix gmelinii juvenile wood. In order to promote the model, it required more verification of various finger-joint figures.关键词
指接材/顺纹抗拉破坏载荷/力学模型/兴安落叶松成熟材Key words
finger-joint lumber/longitudinal tensile failure load/mechanical model/Larix gmelinii mature wood分类
农业科技引用本文复制引用
郭莹洁,赵荣军,钟永,任海青..兴安落叶松成熟材指接材抗拉破坏载荷力学模型[J].南京林业大学学报（自然科学版）,2014,(5):20-24,5.基金项目
国家林业公益性行业科研专项项目 （）
