[1]陈飞,李彦斌,费庆国,等.正交各向异性C/SiC复合材料板的模态密度辨识[J].东南大学学报(自然科学版),2015,45(6):1135-1139.[doi:10.3969/j.issn.1001-0505.2015.06.020]
 Chen Fei,Li Yanbin,Fei Qingguo,et al.Modal density identification of orthotropic C/SiC composite plate[J].Journal of Southeast University (Natural Science Edition),2015,45(6):1135-1139.[doi:10.3969/j.issn.1001-0505.2015.06.020]
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正交各向异性C/SiC复合材料板的模态密度辨识()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第6期
页码:
1135-1139
栏目:
数学、物理学、力学
出版日期:
2015-11-20

文章信息/Info

Title:
Modal density identification of orthotropic C/SiC composite plate
作者:
陈飞李彦斌费庆国董萼良
东南大学土木工程学院, 南京 210096; 东南大学江苏省工程力学分析重点实验室, 南京 210096
Author(s):
Chen Fei Li Yanbin Fei Qingguo Dong Eliang
School of Civil Engineering, Southeast University, Nanjing 210096, China
Jiangsu Key Laboratory of Engineering Mechanics, Southeast University, Nanjing 210096, China
关键词:
模态密度 点导纳法 薄板理论 正交各向异性 C/SiC复合材料
Keywords:
modal density point admittance method thin plate theory orthotropic C/SiC composite
分类号:
TB532
DOI:
10.3969/j.issn.1001-0505.2015.06.020
摘要:
为研究C/SiC复合材料的模态密度获取方法并提高其模态密度辨识精度,以正交各向异性C/SiC复合材料板作为研究对象,在薄板理论基础上推导了正交各向异性复合材料板的模态密度理论计算公式;同时,基于点导纳法对正交各向异性C/SiC复合材料板开展了模态密度试验测试研究,并分析了附加质量对试验测试结果的影响.结果表明,对于给定的正交各向异性C/SiC复合材料板,其模态密度理论计算结果是一个定值;附加质量在中高频段对于C/SiC复合材料板模态密度测试结果影响较大;理论计算值与经过附加质量修正后的试验测试结果在中高频段吻合较好;理论解析计算及试验测试方法在进行C/SiC复合材料板模态密度辨识时具有较高的精确度.
Abstract:
To study the modal density acquisition method of C/SiC composites and improve its modal density identification accuracy, an orthotropic C/SiC composite plate was taken as the research object and the modal density theoretical formula of the orthotropic composite plate was derived based on the thin plate theory. In addition, the point admittance method was used to carry out the experimental study on the modal density of the orthotropic C/SiC composite plate, and the effects of added mass of sensors on the experimental results were analyzed. The results show that for the given orthotropic C/SiC composite plate, the theoretical calculation results of modal density is a determined value. Added mass of sensors has great influence on the experimental results of modal density in the medium-high frequency band for C/SiC composite plates. The theoretical value fits well with the experimental results after the correction of added mass in the medium-high frequency band. The theoretical analysis calculation and experimental testing methods exhibit high accuracy for the modal density identification of C/SiC composite plate.

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备注/Memo

备注/Memo:
收稿日期: 2015-03-02.
作者简介: 陈飞(1990—),男,硕士生;董萼良(联系人),男,副教授,eldong@seu.edu.cn.
基金项目: 教育部新世纪优秀人才支持计划资助项目(NCET-11-0086)、国家自然科学基金资助项目(11402052,11572086)、江苏省普通高校研究生科研创新计划资助项目(CXZZ13-0084).
引用本文: 陈飞,李彦斌,费庆国,等.正交各向异性C/SiC复合材料板的模态密度辨识[J].东南大学学报:自然科学版,2015,45(6):1135-1139. [doi:10.3969/j.issn.1001-0505.2015.06.020]
更新日期/Last Update: 2015-11-20