Ruixuan Hu , Xinhu Zhang , Dongyang Chen , Yangrenyan Li , Yu Jia , Yajun Shi , Guang Pan
{"title":"T700碳纤维复合材料圆柱壳振动特性的实验与分析研究","authors":"Ruixuan Hu , Xinhu Zhang , Dongyang Chen , Yangrenyan Li , Yu Jia , Yajun Shi , Guang Pan","doi":"10.1016/j.apor.2025.104758","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, the free vibration characteristics of carbon fiber reinforced composite cylindrical shells are investigated through both experimental and finite element methods. Modal tests were conducted on a carbon fiber reinforced composite shell, and a corresponding finite element model was developed to calculate its modal characteristics. The calculate results were com-pared with the experimental results to verify the accuracy of the finite element model characteristics. The validated finite element model was used to conduct comprehensive parametric studies of both thin shells (<em>h</em>/<em>R</em>≤0.05) and thick shell (<em>h</em>/<em>R</em>≥0.1) shells, and the systematic comparative analysis was carried out. The effects of the number of layers, ply angle, stacking sequence, boundary conditions, length-radius ratio, and thickness-radius ratio on the vibration characteristics were systematically analyzed. Research findings indicate that: (1) The natural frequency of the shell demonstrates greater sensitivity to ply angles than to stacking sequences. (2) The [<em>θ</em>/−<em>θ</em>]<sub>2</sub> stacking sequence demonstrates more pronounced sensitivity to ply angle variations compared to the [90/<em>θ</em>/−<em>θ</em>/90] stacking sequence. (3) Thick shells demonstrate more pronounced sensitivity to ply angle variations compared to thin shells. (4) Both ply angle variations and thickness-radius ratio changes significantly influence the fundamental frequency. This work provides novel and experimentally verified insights into the dynamics of thick composite material shells and lays the foundation for their structural design.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"163 ","pages":"Article 104758"},"PeriodicalIF":4.4000,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental and analytical investigation of vibration characteristics in T700 carbon fiber composite cylindrical shells\",\"authors\":\"Ruixuan Hu , Xinhu Zhang , Dongyang Chen , Yangrenyan Li , Yu Jia , Yajun Shi , Guang Pan\",\"doi\":\"10.1016/j.apor.2025.104758\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, the free vibration characteristics of carbon fiber reinforced composite cylindrical shells are investigated through both experimental and finite element methods. Modal tests were conducted on a carbon fiber reinforced composite shell, and a corresponding finite element model was developed to calculate its modal characteristics. The calculate results were com-pared with the experimental results to verify the accuracy of the finite element model characteristics. The validated finite element model was used to conduct comprehensive parametric studies of both thin shells (<em>h</em>/<em>R</em>≤0.05) and thick shell (<em>h</em>/<em>R</em>≥0.1) shells, and the systematic comparative analysis was carried out. The effects of the number of layers, ply angle, stacking sequence, boundary conditions, length-radius ratio, and thickness-radius ratio on the vibration characteristics were systematically analyzed. Research findings indicate that: (1) The natural frequency of the shell demonstrates greater sensitivity to ply angles than to stacking sequences. (2) The [<em>θ</em>/−<em>θ</em>]<sub>2</sub> stacking sequence demonstrates more pronounced sensitivity to ply angle variations compared to the [90/<em>θ</em>/−<em>θ</em>/90] stacking sequence. (3) Thick shells demonstrate more pronounced sensitivity to ply angle variations compared to thin shells. (4) Both ply angle variations and thickness-radius ratio changes significantly influence the fundamental frequency. This work provides novel and experimentally verified insights into the dynamics of thick composite material shells and lays the foundation for their structural design.</div></div>\",\"PeriodicalId\":8261,\"journal\":{\"name\":\"Applied Ocean Research\",\"volume\":\"163 \",\"pages\":\"Article 104758\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2025-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Ocean Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S014111872500344X\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, OCEAN\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Ocean Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S014111872500344X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, OCEAN","Score":null,"Total":0}
Experimental and analytical investigation of vibration characteristics in T700 carbon fiber composite cylindrical shells
In this study, the free vibration characteristics of carbon fiber reinforced composite cylindrical shells are investigated through both experimental and finite element methods. Modal tests were conducted on a carbon fiber reinforced composite shell, and a corresponding finite element model was developed to calculate its modal characteristics. The calculate results were com-pared with the experimental results to verify the accuracy of the finite element model characteristics. The validated finite element model was used to conduct comprehensive parametric studies of both thin shells (h/R≤0.05) and thick shell (h/R≥0.1) shells, and the systematic comparative analysis was carried out. The effects of the number of layers, ply angle, stacking sequence, boundary conditions, length-radius ratio, and thickness-radius ratio on the vibration characteristics were systematically analyzed. Research findings indicate that: (1) The natural frequency of the shell demonstrates greater sensitivity to ply angles than to stacking sequences. (2) The [θ/−θ]2 stacking sequence demonstrates more pronounced sensitivity to ply angle variations compared to the [90/θ/−θ/90] stacking sequence. (3) Thick shells demonstrate more pronounced sensitivity to ply angle variations compared to thin shells. (4) Both ply angle variations and thickness-radius ratio changes significantly influence the fundamental frequency. This work provides novel and experimentally verified insights into the dynamics of thick composite material shells and lays the foundation for their structural design.
期刊介绍:
The aim of Applied Ocean Research is to encourage the submission of papers that advance the state of knowledge in a range of topics relevant to ocean engineering.