Abstract The assessment of mesh resistance to opening is a key factor when coming to fishing gear design to study or optimize the fishing selectivity process. Different authors proposed methodologies to achieve twine flexural rigidity identification and mesh opening angle at rest. Their experimental protocols could rely on complex installations and instrumentation, and identification needs dedicated models or software with possible important set up time. Sometimes, different flexural rigidity and rest angle values for a given netting type were proposed depending on identification or experimental conditions, leading to difficulties to choose a value for implementation in netting structures simulation software. The new methodology proposed in this article is based on a simplified experimental protocol taking plasticity into account and an identification method derived from an end user dedicated software, to determine mechanical and dimensional characteristics of common netting materials. Identified flexural rigidity and rest angle values fall inside the interval provided by authors using similar methods. Identified parameters have been used to predict the geometry of two T90 netting cylinders with errors lower than 3%.

中文翻译：

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基于弹簧质量法的渔网抗弯刚度模型的开发及其元启发式参数优化的逆识别

摘要 网眼抗张开性的评估是渔具设计研究或优化捕捞选择性过程的关键因素。不同的作者提出了实现麻线抗弯刚度识别和静止网格张开角的方法。他们的实验协议可能依赖于复杂的安装和仪器，识别需要专用的模型或软件，可能需要重要的设置时间。有时，根据识别或实验条件，对给定的网类型提出了不同的抗弯刚度和静止角值，导致难以选择在网结构仿真软件中实现的值。本文中提出的新方法基于考虑可塑性的简化实验方案和源自最终用户专用软件的识别方法，以确定常见网状材料的机械和尺寸特性。确定的弯曲刚度和静止角值落在作者使用类似方法提供的区间内。已识别参数已用于预测两个 T90 网状圆柱体的几何形状，误差低于 3%。