Title: Time integration algorithm of velocity frequency-weighted root mean square for ship comfort index

Authors: Yan Jin; Liao Jian-Bin; Li Han-Lin; Yu Hong-Liang

Addresses: School of Marine Engineering, Jimei University, Xiamen, Fujian, China; Fujian Engineering Research Centre of Marine Engine Detecting and Remanufacturing, Xiamen, Fujian, China ' School of Marine Engineering, Jimei University, Xiamen, Fujian, China; Fujian Engineering Research Centre of Marine Engine Detecting and Remanufacturing, Xiamen, Fujian, China ' School of Marine Engineering, Jimei University, Xiamen, Fujian, China; Fujian Engineering Research Centre of Marine Engine Detecting and Remanufacturing, Xiamen, Fujian, China ' School of Marine Engineering, Jimei University, Xiamen, Fujian, China; Fujian Engineering Research Centre of Marine Engine Detecting and Remanufacturing, Xiamen, Fujian, China

Abstract: The imposition of excessive ship vibration induces corresponding motions and forces within the human body, possibly causing discomfort and degraded levels of comfort and health. The ISO criterion is designed to limit potential vibration to improve the crew comfort. Frequency weighting values are used to evaluate whole-body vibration in accordance with ISO standard. This study describes the frequency method used to compute the frequency weighted velocity values by using acceleration time signals. Firstly, the relationship between velocity and acceleration is deduced in detail, and then a time domain integrated method is proposed to calculate the frequency weighted velocity RMS, finally, the validity of the method is assessed on a real sea test experiment and compared with frequency domain method.

Keywords: ship habitability evaluation; vibration assessment; time domain integration.

DOI: 10.1504/IJCAT.2023.134078

International Journal of Computer Applications in Technology, 2023 Vol.73 No.1, pp.13 - 23

Received: 30 Nov 2022
Accepted: 19 Feb 2023
Published online: 10 Oct 2023 *

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