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Automated processing of free roll decay experimental data

机译:自由滚动衰减实验数据的自动处理

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This work presents an efficient numerical and modular approach to assessing viscous roll damping coefficients from free decay tests. In order to reduce the time consumed during analysis, numerical preprocessing of the data without visual inspection is suggested. The method involves breaking down multiple decay motions recorded in a single time series, numerically determining the beginning and the end of valid decay motion, eliminating the outlying data from the experimental analysis and obtaining the linear and non-linear roll damping coefficients. None of the pre-processing steps depend on each other and they can be used separately in a modular structure. The process is exemplified using decay test samples of a fishing vessel. To use these analysis results in numerical simulations that extend beyond identical conditions with the experiments, a 3D surface approach is examined. The surface also reveals the effect of speed on the coefficients obtained from the sample set. (C) 2015 Elsevier Ltd. All rights reserved.
机译:这项工作提出了一种有效的数值和模块化方法,用于通过自由衰减测试评估粘性滚动阻尼系数。为了减少分析过程中消耗的时间,建议对数据进行数字预处理而无需目视检查。该方法涉及分解单个时间序列中记录的多个衰减运动,通过数值确定有效衰减运动的开始和结束,从实验分析中消除外围数据,并获得线性和非线性侧倾阻尼系数。预处理步骤都不相互依赖,并且它们可以以模块化结构单独使用。该过程以渔船的衰变测试样品为例。为了将这些分析结果用于超出与实验相同条件的数值模拟中,需要检查3D表面方法。该表面还揭示了速度对从样本集获得的系数的影响。 (C)2015 Elsevier Ltd.保留所有权利。

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