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首页> 外文期刊>ICES Journal of Marine Science >Quantifying mesh resistance to opening of netting panels: experimental method, regression models, and parameter estimation strategies
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Quantifying mesh resistance to opening of netting panels: experimental method, regression models, and parameter estimation strategies

机译:量化网对开孔面板的阻力:实验方法,回归模型和参数估计策略

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The increased mesh resistance to opening of netting panels manufactured with thick and stiff twines has a notable impact in the structural response and selective performance of the fishing gears. The only available method to quantify the mesh resistance to opening of netting panels was described in Sala et al. (in Experimental method for quantifying resistance to the opening of netting panels. ICES Journal of Marine Science, 64: 1573-1578, 2007b). We present an alternative method with a similar methodology: we attempt to estimate the mechanical and geometrical properties of a netting material that best fits the experimental measurements of a netting panel. We introduce three major contributions: (i) a considerably simpler uniaxial experimental set-up, which stretches a netting sample in the normal direction of the meshes while leaving free its deformation in the transverse direction; (ii) more accurate theoretical models for mesh resistance to opening; and (iii) new strategies to estimate the parameters of the models. We present the results of the analysis of polyethylene, compacted polyethylene, single-twine, and double-twine netting. Some of the assessed combinations of estimation strategies and theoretical models have an excellent goodness of fit with experimental data. The method proved to be a simple yet accurate way to quantify the mesh resistance to opening of netting panels.
机译:用厚而硬的麻线制造的网片打开时增加的网孔阻力对钓鱼用具的结构响应和选择性性能产生了显着影响。 Sala等人描述了唯一可用的方法来量化筛网对筛网打开的阻力。 (在量化对网板开口的阻力的实验方法中。ICES海洋科学杂志,64:1573-1578,2007b)。我们提出了一种具有类似方法的替代方法:我们尝试估算最适合网板实验尺寸的网材料的机械和几何性能。我们介绍了三个主要的贡献:(i)一种相当简单的单轴实验装置,它可以在网格的法线方向上拉伸网状样品,而在横向上不变形。 (ii)更准确的网格抗开孔理论模型; (iii)估计模型参数的新策略。我们介绍了聚乙烯,压实聚乙烯,单股和双股网的分析结果。评估策略和理论模型的某些评估组合具有很好的与实验数据拟合的优势。事实证明,该方法是一种简单而准确的方法,可以量化筛网对网状面板打开的阻力。

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