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兴安落叶松成熟材单一年轮顺纹力学模型(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2015年01期
Page:
177-180
Column:
研究简报
publishdate:
2015-01-30

Article Info:/Info

Title:
Modeling the longitudinal mechanical properties of a single annual ring of Larix gmelinii mature wood
Article ID:
1000-2006(2015)01-0177-04
Author(s):
GUO Yingjie ZHAO Rongjun ZHONG Yong REN Haiqing*
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
Keywords:
Larix gmelinii mature wood annual ring modulus of elastic longitudinal tensile strength mechanical model
Classification number :
S781.2
DOI:
10.3969/j.issn.1000-2006.2015.01.032
Document Code:
A
Abstract:
To establish the mechanical modes of Larix gmelinii mature single annual ring(MSAR), including longitudinal modulus of elastic(MOE)and tensile failure load(LTF), classic Laminate theory was involved as the theoretical basic and MSAR was composition of earlywood(EW)and latewood(LW). Besides, in order to verify the both models, the mechanical properties of EW and LW were tested. The results showed that the relative errors of MOE model were concentrated fewer than 20%, while they were dispersed under 60% in LTF model. It concluded that it was possible to build Larix gmelinii MSAR mechanical models, of which base units were EW and LW. To improve the accuracy of LTF model, it was necessary to enhance test accuracy of specimen geometry. Moreover, to obtain more reliable mechanical properties of EW and LW mechanical parameters from MSAR, it requires further study on test methods for EW and LW.

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Last Update: 2015-01-31