| LARCH AND WHITE BIRCH GROWTH STRESSES'EXPERIMENTAL INVESTIGATION AND ANALYSIS |
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| 作者姓名： | 吴克安 宋逊 |
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| 摘 要： | INTRODUCTIONDuringtreegrowth,thetrunkgrowthstressesareproduced-Growthstressescanbeconsideredasakindofresidualstresses.Thestresses'existencedecreasetheeffectiveutilizationpercentoftimder,forexample,theycancausefalureoftimberend,andthismakesalotoftimbercutting;theycanmakewoodplatewarpage,and'thusitmustbereworkedinordertoreachthelevelofsellingandusingandsoon.Allofthesemakealotofwasteofwood.Accordingtothereport,inFrance,thelosscausedbygroWthstressesinbeechonlyismorethanonemillionfranceachyea…
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LARCH AND WHITE BIRCH GROWTH STRESSES' EXPERIMENTAL INVESTIGATION AND ANALYSIS |
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| Wu Kean,Song Xun.LARCH AND WHITE BIRCH GROWTH STRESSES'EXPERIMENTAL INVESTIGATION AND ANALYSIS[J].Journal of Forestry Research,1994(1). |
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| Authors: | Wu Kean Song Xun |
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| Institution: | Wu Kean Song Xun (Northeast Forestry University )(Economic Cooperation Committee of Jidong County) |
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| Abstract: | In this paper, the equations of tree growth stresses are given by using thick -walled cylinder theory under the assumption that tree trunk is considered as a homogeneous orthogonal anisotropic cylinder. Through a lot of calculation of the experimental data, some figs. of growth stresses' distributions are given, and growth stresses distributions are analyzed. |
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| Keywords: | Tree Growth stress |
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