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根据含水量和节数的芒草×巨芒草茎所选强度参数的值

Values of Selected Strength Parameters of Miscanthus × Giganteus Stalk Depending on Water Content and Internode Number.

作者信息

Francik Sławomir, Knapik Paweł, Łapczyńska-Kordon Bogusława, Francik Renata, Ślipek Zbigniew

机构信息

Department of Mechanical Engineering and Agrophysics, Faculty of Production Engineering and Energetics, University of Agriculture in Krakow, Balicka 120, 30-149 Krakow, Poland.

Department of Bioorganic Chemistry, Chair of Organic Chemistry, Jagiellonian University Medical College, 30-688 Krakow, Poland.

出版信息

Materials (Basel). 2022 Feb 16;15(4):1480. doi: 10.3390/ma15041480.

DOI:10.3390/ma15041480
PMID:35208019
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8876718/
Abstract

So far, there are no results for research on the biomechanical parameters of giant miscanthus stalks taking into account both the influence of moisture content and the internode, from which the samples were taken. Therefore, the aim of the research was to comprehensively investigate the influence of the internode number (NrNod) and water content (MC) on the values of selected biomechanical parameters (modulus of elasticity and maximum stress) determined using various stress tests (three-point bending and compression along the fibers). The research was carried out for dry stalks of different humidities and for different internodes. The results obtained in this study proved that the independent variables of the water content and the internode number cause a statistically significant influence on the values of the examined biomechanical parameters of the miscanthus stem: the modulus of elasticity in compression, the maximum stress in compression, the modulus of elasticity in bending and the maximum stress in bending. The values of the modulus of elasticity (MOE) increase when increasing the NrNod. For individual internodes, MOE values are higher with a higher MC. The values of the maximum stress (σ) also increase when increasing the internode number. For individual internodes, the σ values are lower with a higher MC.

摘要

到目前为止，尚未有关于兼顾水分含量影响以及取样节间的巨型芒草茎秆生物力学参数的研究结果。因此，本研究的目的是全面调查节间数（NrNod）和含水量（MC）对通过各种应力测试（三点弯曲和沿纤维压缩）确定的选定生物力学参数（弹性模量和最大应力）值的影响。对不同湿度的干燥茎秆以及不同节间进行了研究。本研究获得的结果证明，含水量和节间数这两个自变量对芒草茎秆的以下被检测生物力学参数值具有统计学上的显著影响：压缩弹性模量、压缩最大应力、弯曲弹性模量和弯曲最大应力。随着NrNod增加，弹性模量（MOE）值增大。对于单个节间，MC越高，MOE值越高。随着节间数增加，最大应力（σ）值也增大。对于单个节间，MC越高，σ值越低。

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