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In order to study the dynamic behavior of stiffened cylindrical shells with composite material sandwiched by co-cured damping films under the clamped boundary condition, the specimens of stiffened cylindrical shell with composite material sandwiched by co-cured damping films were prepared, and the dynamic modal test platform was set up. The fundamental frequency, damping ratio and modal shapes of stiffened cylindrical shell specimens were solved, and the accuracy of finite element model was verified. The influence of geometric parameters on structural vibration characteristics was further discussed by the numerical simulation method. The results show that, the fundamental frequency, damping ratio and modal shape of the structure will change abruptly when the height of stiffeners changes, and there is a suitable height value before the abrupt change to make the whole structure consider both damping and stiffness requirements; when the thickness of composite materials is constant, the fundamental frequency of the whole structure decreases gradually and the damping ratio increases gradually with the increase of the damping thickness or damping layer number of single layer; for the stiffened cylindrical shell of single layer damping composite materials, the closer the damping layer is to the inner skin, the higher the stiffness is, and vice versa, the damping capacity is better.
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为研究共固化阻尼膜夹嵌复合材料加筋圆柱壳在固支边界下的动力学性能,制备了共固化阻尼膜夹嵌复合材料加筋圆柱壳试件,搭建了动力学模态试验平台,求解了加筋圆柱壳试件的基频、阻尼比和模态振型,并验证了有限元模型的准确性,进一步通过数值模拟方法探讨了几何参数对结构振动特性的影响。结果表明,加强筋高度变化,结构的基频、阻尼比和模态振型会发生突变,且在突变前存在合适的高度值使整体结构同时兼顾阻尼和刚度需求;复合材料厚度一定时,随单层阻尼厚度或阻尼层数增加,整体结构基频逐渐减小,阻尼比逐渐增大;对于单层阻尼复合材料加筋圆柱壳,阻尼层越接近内蒙皮,其刚度越高,反之阻尼能力越好。
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周越松,男,1996年生,山东庆云人,硕士,讲师;主要研究方向为复合材料动力学;E-mail:zhouyuesong127@163.com。
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周越松,男,1996年生,山东庆云人,硕士,讲师;主要研究方向为复合材料动力学;E-mail:zhouyuesong127@163.com。
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3.School of Intelligent Manufacturing, Weifang University of Science and Technology, Weifang 262700, China), AuthorCompanyExt(id=1241400388390277246, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, companyId=1241400388373500029, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.潍坊科技学院 智能制造学院,潍坊 262700)])], figs=[ArticleFig(id=1241400392970457414, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.1, caption=
CDFEC stiffened cylindrical shell specimen, figureFileSmall=YuwKqpuiH3O/H7JdW7LpEw==, figureFileBig=pT4o3jjfJnZ/knr6nqnU2A==, tableContent=null), ArticleFig(id=1241400393041760590, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图1, caption=
CDFEC加筋圆柱壳试件, figureFileSmall=YuwKqpuiH3O/H7JdW7LpEw==, figureFileBig=pT4o3jjfJnZ/knr6nqnU2A==, tableContent=null), ArticleFig(id=1241400393142423892, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.2, caption=
Modal test platform for CFFEC stiffened cylindrical shell, figureFileSmall=qr98T7ca/aE2q2UGI9jpyw==, figureFileBig=wC2H3C8jFPo8jtNZceGnJQ==, tableContent=null), ArticleFig(id=1241400393222115671, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图2, caption=
CDFEC加筋圆柱壳模态测试平台, figureFileSmall=qr98T7ca/aE2q2UGI9jpyw==, figureFileBig=wC2H3C8jFPo8jtNZceGnJQ==, tableContent=null), ArticleFig(id=1241400393310196059, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.3, caption=
Geometric model of the stiffened cylindrical shell, figureFileSmall=gycYfy2R+XtVL07sqOEk6g==, figureFileBig=B26ELlBYhxjs+ElUdSfiNw==, tableContent=null), ArticleFig(id=1241400393398276452, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图3, caption=
加筋圆柱壳几何模型, figureFileSmall=gycYfy2R+XtVL07sqOEk6g==, figureFileBig=B26ELlBYhxjs+ElUdSfiNw==, tableContent=null), ArticleFig(id=1241400393482162538, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.4, caption=
Finite element model and boundary conditions of the CDFEC stiffened cylindrical shell, figureFileSmall=bMAEZpXxiXGSnQjbURggsQ==, figureFileBig=wRP66YWQlI3EKAT0kHWA3w==, tableContent=null), ArticleFig(id=1241400393561854318, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图4, caption=
CDFEC加筋圆柱壳的有限元模型及边界条件, figureFileSmall=bMAEZpXxiXGSnQjbURggsQ==, figureFileBig=wRP66YWQlI3EKAT0kHWA3w==, tableContent=null), ArticleFig(id=1241400393658323315, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.5, caption=
1st order modal shape, figureFileSmall=AnNozSUIj6Frb4rXNO7Z6Q==, figureFileBig=Z17WpFefzSHSEkyKWENVKw==, tableContent=null), ArticleFig(id=1241400395138912633, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图5, caption=
1阶模态振型, figureFileSmall=AnNozSUIj6Frb4rXNO7Z6Q==, figureFileBig=Z17WpFefzSHSEkyKWENVKw==, tableContent=null), ArticleFig(id=1241400395235381630, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.6, caption=
2nd order modal shape, figureFileSmall=PFSh4B8CnfDVyXdS0Jt08g==, figureFileBig=LkjiMbn1LCuEmKQ5v9MfeA==, tableContent=null), ArticleFig(id=1241400395331850629, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图6, caption=
2阶模态振型, figureFileSmall=PFSh4B8CnfDVyXdS0Jt08g==, figureFileBig=LkjiMbn1LCuEmKQ5v9MfeA==, tableContent=null), ArticleFig(id=1241400395415736714, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.7, caption=
3rd order modal shape, figureFileSmall=dovpc5WovCMD5NQRVMWgdw==, figureFileBig=VMFFYGuth8nbo67mVV3QDQ==, tableContent=null), ArticleFig(id=1241400395524788625, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图7, caption=
3阶模态振型, figureFileSmall=dovpc5WovCMD5NQRVMWgdw==, figureFileBig=VMFFYGuth8nbo67mVV3QDQ==, tableContent=null), ArticleFig(id=1241400395621257624, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.8, caption=
Physical significance of geometric parameters of CDFEC stiffened cylindrical shell, figureFileSmall=XHc1sn+d4Bqo0armc/AjkQ==, figureFileBig=ckyz0LVh2lThy38rcb/9Hg==, tableContent=null), ArticleFig(id=1241400395730309531, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图8, caption=
CDFEC加筋圆柱壳几何参数的物理意义, figureFileSmall=XHc1sn+d4Bqo0armc/AjkQ==, figureFileBig=ckyz0LVh2lThy38rcb/9Hg==, tableContent=null), ArticleFig(id=1241400395826778529, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.9, caption=
Effect of the axial rib height on the 1st-order natural frequency, figureFileSmall=bNvPuEfcm7QTlj3Dhkz5Mw==, figureFileBig=7JG9iCpXFpojAHrPsm8tQg==, tableContent=null), ArticleFig(id=1241400395910664613, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图9, caption=
轴向筋高度对1阶固有频率的影响, figureFileSmall=bNvPuEfcm7QTlj3Dhkz5Mw==, figureFileBig=7JG9iCpXFpojAHrPsm8tQg==, tableContent=null), ArticleFig(id=1241400396015522218, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.10, caption=
Effect of the axial rib height on the 1st-order modal loss factor, figureFileSmall=DF/fGfgvMQyZyrFJydc+Kg==, figureFileBig=gLptqSuWWYa4lFV+TSvm1g==, tableContent=null), ArticleFig(id=1241400396099408303, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图10, caption=
轴向筋高度对1阶模态损耗因子的影响, figureFileSmall=DF/fGfgvMQyZyrFJydc+Kg==, figureFileBig=gLptqSuWWYa4lFV+TSvm1g==, tableContent=null), ArticleFig(id=1241400396183294388, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.11, caption=
Effect of the axial rib width on the 1st-order natural frequency, figureFileSmall=AQb+OkNk41lQnqrMsP4G6w==, figureFileBig=ncdC3YFsDxCpFT6PilMm6A==, tableContent=null), ArticleFig(id=1241400396275569080, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图11, caption=
轴向筋宽度对1阶固有频率的影响, figureFileSmall=AQb+OkNk41lQnqrMsP4G6w==, figureFileBig=ncdC3YFsDxCpFT6PilMm6A==, tableContent=null), ArticleFig(id=1241400396346872253, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.12, caption=
Effect of the axial rib width on the 1st-order modal loss factor, figureFileSmall=IY5+wvjW5QLGDn/eivy+UQ==, figureFileBig=5ZsnRA4W2zqghm5SgNZJ8w==, tableContent=null), ArticleFig(id=1241400396405592514, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图12, caption=
轴向筋宽度对1阶模态损耗因子的影响, figureFileSmall=IY5+wvjW5QLGDn/eivy+UQ==, figureFileBig=5ZsnRA4W2zqghm5SgNZJ8w==, tableContent=null), ArticleFig(id=1241400396489478599, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig. 13, caption=
Effect of the circumferential rib height on the 1st-order natural frequency, figureFileSmall=alh0x596xrFgDE4/nqtHuA==, figureFileBig=9Gc8EnSZfCLoX7By6V8LcQ==, tableContent=null), ArticleFig(id=1241400396648862155, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图13, caption=
周向筋高度对1阶固有频率的影响, figureFileSmall=alh0x596xrFgDE4/nqtHuA==, figureFileBig=9Gc8EnSZfCLoX7By6V8LcQ==, tableContent=null), ArticleFig(id=1241400396753719758, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.14, caption=
Effect of the circumferential rib height on the 1st-order modal loss factor, figureFileSmall=nAObydK3iHwPfOeOzZGSPQ==, figureFileBig=a7hwufZyYLioyWLtq40C+A==, tableContent=null), ArticleFig(id=1241400396845994452, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图14, caption=
周向筋高度对1阶模态损耗因子的影响, figureFileSmall=nAObydK3iHwPfOeOzZGSPQ==, figureFileBig=a7hwufZyYLioyWLtq40C+A==, tableContent=null), ArticleFig(id=1241400396959240665, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.15, caption=
Mode shapes, figureFileSmall=UqR6dZbePY/18M99CPYNIA==, figureFileBig=lE/gfG470U+HaorYt8jTxQ==, tableContent=null), ArticleFig(id=1241400397043126750, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图15, caption=
模态振型, figureFileSmall=UqR6dZbePY/18M99CPYNIA==, figureFileBig=lE/gfG470U+HaorYt8jTxQ==, tableContent=null), ArticleFig(id=1241400397131207137, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig. 16, caption=
Effect of the circumferential rib width on the 1st-order natural frequency, figureFileSmall=RG0a/hCnoIx5gsHlCgFzOQ==, figureFileBig=S+OXqmF0wprOo8eAoJTwNQ==, tableContent=null), ArticleFig(id=1241400397210898919, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图16, caption=
周向筋宽度对1阶固有频率的影响, figureFileSmall=RG0a/hCnoIx5gsHlCgFzOQ==, figureFileBig=S+OXqmF0wprOo8eAoJTwNQ==, tableContent=null), ArticleFig(id=1241400397290590698, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.17, caption=
Effect of the circumferential rib width on the 1st-order modal loss factor, figureFileSmall=qt41AQW1rZduA390x3FiLQ==, figureFileBig=/p5YsuBR1USkYAigzbJOnA==, tableContent=null), ArticleFig(id=1241400397395448305, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图17, caption=
周向筋宽度对1阶模态损耗因子的影响, figureFileSmall=qt41AQW1rZduA390x3FiLQ==, figureFileBig=/p5YsuBR1USkYAigzbJOnA==, tableContent=null), ArticleFig(id=1241400397487722998, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.18, caption=
Effect of d3 on the 1st-order natural frequency, figureFileSmall=8hb0AEOD7y4wqhCVJjxBOg==, figureFileBig=cmBMUxylVZhYkXqLui/DdQ==, tableContent=null), ArticleFig(id=1241400397596774910, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图18, caption=
d3对1阶固有频率的影响, figureFileSmall=8hb0AEOD7y4wqhCVJjxBOg==, figureFileBig=cmBMUxylVZhYkXqLui/DdQ==, tableContent=null), ArticleFig(id=1241400397705826817, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.19, caption=
Effect of d3 on the 1st-order modal loss factor, figureFileSmall=QTILRGraXvFCyGW8tEIVjQ==, figureFileBig=92GK7tmF3PDhRShaBcCXpg==, tableContent=null), ArticleFig(id=1241400397814878727, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图19, caption=
d3对1阶模态损耗因子的影响, figureFileSmall=QTILRGraXvFCyGW8tEIVjQ==, figureFileBig=92GK7tmF3PDhRShaBcCXpg==, tableContent=null), ArticleFig(id=1241400397907153421, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.20, caption=
Effect of h1 on the 1st-order natural frequency, figureFileSmall=SDl3bE/KQz+F4uP/ZjZyCQ==, figureFileBig=ENB9JURaE69VQ4ktbyasdw==, tableContent=null), ArticleFig(id=1241400397995233812, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图20, caption=
h1对1阶固有频率的影响, figureFileSmall=SDl3bE/KQz+F4uP/ZjZyCQ==, figureFileBig=ENB9JURaE69VQ4ktbyasdw==, tableContent=null), ArticleFig(id=1241400398087508506, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.21, caption=
Effect of h1 on the loss factor, figureFileSmall=/BiyuUqekKiYxxG9MIy3bQ==, figureFileBig=7BTschA976t5QKOC8E0w4A==, tableContent=null), ArticleFig(id=1241400398196560414, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图21, caption=
h1对损耗因子的影响, figureFileSmall=/BiyuUqekKiYxxG9MIy3bQ==, figureFileBig=7BTschA976t5QKOC8E0w4A==, tableContent=null), ArticleFig(id=1241400399660372514, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.22, caption=
Location of the damping layer in the CDFEC stiffened cylindrical shell, figureFileSmall=Q8CoLz9FCDozGrtVXmJb9w==, figureFileBig=c3XbTjv3m5oj4I2h/4NWTg==, tableContent=null), ArticleFig(id=1241400399752647208, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图22, caption=
阻尼层在CDFEC加筋圆柱壳中位置, figureFileSmall=Q8CoLz9FCDozGrtVXmJb9w==, figureFileBig=c3XbTjv3m5oj4I2h/4NWTg==, tableContent=null), ArticleFig(id=1241400399853310509, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.23, caption=
Effect of damping layers on the 1st-order natural frequency, figureFileSmall=fXQSyQ86Ax2TO2C42gjElw==, figureFileBig=DpqijJGFM3DdBeHq/pAeLg==, tableContent=null), ArticleFig(id=1241400399933002291, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图23, caption=
阻尼层数对1阶固有频率的影响, figureFileSmall=fXQSyQ86Ax2TO2C42gjElw==, figureFileBig=DpqijJGFM3DdBeHq/pAeLg==, tableContent=null), ArticleFig(id=1241400400021082677, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.24, caption=
Effect of damping layers on the loss factor, figureFileSmall=b7Bl/Xj53xiGbvJIWy5G2A==, figureFileBig=8WsCW4K8X3lmcH74T+mDmw==, tableContent=null), ArticleFig(id=1241400400096580154, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图24, caption=
阻尼层数对损耗因子的影响, figureFileSmall=b7Bl/Xj53xiGbvJIWy5G2A==, figureFileBig=8WsCW4K8X3lmcH74T+mDmw==, tableContent=null), ArticleFig(id=1241400400184660541, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.25, caption=
Meaning of the distance d1, figureFileSmall=Iy61h6nj2wiPZKW49QVIgQ==, figureFileBig=JxcMUaeFYx/HTNN0wa3ECQ==, tableContent=null), ArticleFig(id=1241400400272740930, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图25, caption=
距离d1的意义, figureFileSmall=Iy61h6nj2wiPZKW49QVIgQ==, figureFileBig=JxcMUaeFYx/HTNN0wa3ECQ==, tableContent=null), ArticleFig(id=1241400400352432706, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.26, caption=
Effect of d1 on the 1st-order natural frequency, figureFileSmall=vy6pqRlJQK2wGfkTYqC2QQ==, figureFileBig=4sDRfpqtdY2B4hopgKUaNQ==, tableContent=null), ArticleFig(id=1241400400427930181, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图26, caption=
d1对1阶固有频率的影响, figureFileSmall=vy6pqRlJQK2wGfkTYqC2QQ==, figureFileBig=4sDRfpqtdY2B4hopgKUaNQ==, tableContent=null), ArticleFig(id=1241400400507621960, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Fig.27, caption=
Effect of d1 on the loss factor, figureFileSmall=Kgw4QHSHvo1WmPL687y9QQ==, figureFileBig=jxpbthwvEkqsJd3cXx2O2Q==, tableContent=null), ArticleFig(id=1241400400574730826, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=图27, caption=
d1对损耗因子的影响, figureFileSmall=Kgw4QHSHvo1WmPL687y9QQ==, figureFileBig=jxpbthwvEkqsJd3cXx2O2Q==, tableContent=null), ArticleFig(id=1241400400641839693, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Tab.1, caption=
Damping material parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | 数值Numerical value |
|---|
| 密度Density ρ/(kg/m3) | 985 |
| 弹性模量Elasticity modulus Ex/MPa | 15.5 |
| 泊松比Poisson ratio ν | 0.498 |
| 损耗因子Loss factor nv | 0.2 |
| 厚度Thickness/mm | 0.1 |
), ArticleFig(id=1241400400750891599, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=表1, caption=
阻尼材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | 数值Numerical value |
|---|
| 密度Density ρ/(kg/m3) | 985 |
| 弹性模量Elasticity modulus Ex/MPa | 15.5 |
| 泊松比Poisson ratio ν | 0.498 |
| 损耗因子Loss factor nv | 0.2 |
| 厚度Thickness/mm | 0.1 |
), ArticleFig(id=1241400400843166290, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Tab.2, caption=
Composite material parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | 数值Numerical value |
|---|
| 密度Density ρ/(kg/m3) | 1 600 |
| 弹性模量Elasticity modulus Ex、Ey、Ez/GPa | 57.1,60.3,8.8 |
| 剪切模量Shear modulus Gxy、Gyz、Gxz/GPa | 5.32,4.47,4.47 |
| 泊松比Poisson ratio νxy、νyz、νxz | 0.052,0.038,0.334 |
| 单层厚度Single layer thickness/mm | 0.25 |
), ArticleFig(id=1241400400998355541, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=表2, caption=
复合材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | 数值Numerical value |
|---|
| 密度Density ρ/(kg/m3) | 1 600 |
| 弹性模量Elasticity modulus Ex、Ey、Ez/GPa | 57.1,60.3,8.8 |
| 剪切模量Shear modulus Gxy、Gyz、Gxz/GPa | 5.32,4.47,4.47 |
| 泊松比Poisson ratio νxy、νyz、νxz | 0.052,0.038,0.334 |
| 单层厚度Single layer thickness/mm | 0.25 |
), ArticleFig(id=1241400401090630233, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Tab.3, caption=
Structural geometric parameters of stiffened cylindrical shells
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| 参数Parameter | 物理数值 Physical value |
|---|
| 壳体高度Shell height/mm | 320 |
| 壳中性层半径Neutral layer radius of the shell/mm | 338.1 |
| 壳体总厚度Total thickness of the shell/mm | 2.1 |
| 内外蒙皮厚度Thickness of inner and outer skin/mm | 1 |
| 阻尼层厚度Damping layer thickness/mm | 0.1 |
| 预浸料缠绕数目Number of pre-preg windings | 8 |
| 预浸料缠绕结构Winding structure of pre-preg | [08/d]s |
| 加强筋长度Length of stiffener/mm | 320 |
| 加强筋高度Height of stiffener/mm | 24 |
| 加强筋宽度Width of stiffener/mm | 20 |
| 加强筋厚度Thickness of stiffener/mm | 2 |
| 预浸料铺层数目Number of layers of pre-preg | 8 |
), ArticleFig(id=1241400401174516316, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=表3, caption=
加筋圆柱壳结构几何参数
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| 参数Parameter | 物理数值 Physical value |
|---|
| 壳体高度Shell height/mm | 320 |
| 壳中性层半径Neutral layer radius of the shell/mm | 338.1 |
| 壳体总厚度Total thickness of the shell/mm | 2.1 |
| 内外蒙皮厚度Thickness of inner and outer skin/mm | 1 |
| 阻尼层厚度Damping layer thickness/mm | 0.1 |
| 预浸料缠绕数目Number of pre-preg windings | 8 |
| 预浸料缠绕结构Winding structure of pre-preg | [08/d]s |
| 加强筋长度Length of stiffener/mm | 320 |
| 加强筋高度Height of stiffener/mm | 24 |
| 加强筋宽度Width of stiffener/mm | 20 |
| 加强筋厚度Thickness of stiffener/mm | 2 |
| 预浸料铺层数目Number of layers of pre-preg | 8 |
), ArticleFig(id=1241400401258402401, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=EN, label=Tab.4, caption=
Comparison of test and simulation results
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| 阶数Order | 无阻尼加筋圆柱壳仿真结果 Simulation results of undamped stiffened cylindrical shell | 加筋圆柱壳仿真结果 Simulation results of stiffened cylindrical shell | 加筋圆柱壳试验结果 Test results of stiffened cylindrical shell | 误差Error/% |
|---|
频率 Frequency/Hz | 损耗因子 Loss factor η/% | 频率 Frequency/Hz | 损耗因子 Loss factor η/% | 频率 Frequency/Hz | 损耗因子 Loss factor η/% | 频率 Frequency | 损耗因子 Loss factor |
|---|
| 1阶1st order | 292.45 | 1.01 | 281.67 | 2.50 | 286.95 | 2.39 | -1.84 | -4.60 |
| 2阶2nd order | 363.26 | 347.17 | 338.91 | 2.44 |
| 3阶3rd order | 468.34 | 407.34 | 442.80 | -8.00 |
), ArticleFig(id=1241400401354871394, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241394835530240261, language=CN, label=表4, caption=
试验与仿真结果对比
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| 阶数Order | 无阻尼加筋圆柱壳仿真结果 Simulation results of undamped stiffened cylindrical shell | 加筋圆柱壳仿真结果 Simulation results of stiffened cylindrical shell | 加筋圆柱壳试验结果 Test results of stiffened cylindrical shell | 误差Error/% |
|---|
频率 Frequency/Hz | 损耗因子 Loss factor η/% | 频率 Frequency/Hz | 损耗因子 Loss factor η/% | 频率 Frequency/Hz | 损耗因子 Loss factor η/% | 频率 Frequency | 损耗因子 Loss factor |
|---|
| 1阶1st order | 292.45 | 1.01 | 281.67 | 2.50 | 286.95 | 2.39 | -1.84 | -4.60 |
| 2阶2nd order | 363.26 | 347.17 | 338.91 | 2.44 |
| 3阶3rd order | 468.34 | 407.34 | 442.80 | -8.00 |
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