检索结果-南通市图书馆

vibration performance discrete optimization of a gear system featuring confluence transmission used in marine gearbox

引用

International Journal of Modeling, Simulation, and Scientific Computing 2017年第1期8卷 165-178页

作者： Zeyin He Tao Deng Xiangyang Xu School of Mechantronics and Vehicle EngineeringChongqing Jiaotong University Chongqing 400074P.R.China State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400030P.R.China

A dynamic model of gear transmission system which includes time-varying meshing stiffness,meshing damp and transmission error is ***,the analytical solution of the vibration response would be obtained by solving the dynamic model based on the harmonic balance *** on this basis,a dynamic performance discrete optimization model of transmission sub-system would be constructed,which sets objective function up from vibration acceleration and the total mass of transmission sub-system,treats the module,number of teeth and helix angle as design variables,and takes gear strength and assembly relationship as ***,the optimal solution of design variables could be obtained through the multivariable mixed discrete optimization program which based on the branch-bound *** results show that the vibration acceleration and the total mass of transmission sub-system reduce by 34.6%and 6.8%,respectively.

关键词： Gear transmission system dynamic model vibration performance discrete optimization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Prediction of lute acoustic quality based on soundboard vibration performance using multiple choice model

引用

Journal of Forestry Research 2017年第4期28卷 855-861页

作者： Yang Yang Zhenbo Liu Yixing Liu Key Laboratory of Bio-based Material Science and Technology of National Ministry of Education Northeast Forestry UniversityHarbinHeilongjiangPeople’s Republic of China

The vibrational performance of wood materials critical affects the acoustic quality of a lute. The purpose of this research was to apply a multiple choice model to predict the quality of musical instruments based on data on lute soundboard vibrational properties of Paulownia wood. In the lute production, lute material selection mainly depends on the subjective evaluation of technicians, which is not only inefficient, but inaccurate. In this study, nine lutes were fabricated. Using the multiple selection model, the lute tone quality was predicted by the soundboard wood vibration data. Compared with the actual value, the dependent value predicted by the count of observations with the maximum probability had 22 erroneous judgments. The model precision is 87.78%. The results confirmed that the prediction model can be used as a guideline for the selection of the soundboard wood in musical instrument plants.

关键词： Multiple choice model Musical instrument quality Normal distribution vibration performance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

COMPARISON OF vibration performance OF A SANDWICH CLAMPED-CLAMPED BEAM WITH MAGNETS VERSUS CONVENTIONAL CONSTRAINED DAMPING TREATMENTS

引用

Acta Mechanica Solida Sinica 2004年第2期17卷 121-130页

作者： ZhengHuiming HeZeng LiMing ZhaoGaoyu DepartmentofMechanics HuazhongUniversityofScienceandTechnologyWuhan430074China

This paper investigates how the magnetic constrained layer damping (MCLD) treat- ment suppresses the displacement and acceleration resonant peak of a clamped-clamped beam. Because MCLD treatment reduces input work and gives more dissipation energy, the vibration from external excitation can be e?ectively *** vibration reduction e?ects of MCLD and other conventional constrained damping treatments are also evaluated. In many cases, using MCLD treatments can yield smaller displacement and acceleration resonant peak especially in mode 1 compared to the other treatments without greatly changing the natural frequencies of the base beam.

关键词： magnets clamped-clamped beam vibration performance constrained damping treatment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

vibration Modal Analysis of Compressor Blade based on ANSYS

引用

International Journal of Plant Engineering and Management 2017年第2期22卷 65-72页

作者： ZHENG Guang-hua LI Jia-lin TIAN Xue LEI Zi-han School of Power and Energy Northwestern Polytechnical University

Compressor is an important part of aero engine. In the environment of high temperature and high pressure,compressor blade will suffer from several physical and chemical processes,such as centrifugal force,aerodynamic force vibration and oxidation. These processes will lead compressor blade to fatigue fracture,and at the same time,make negative effects on the engine’ s overall performance. Based on the software ANSYS15. 0,we made strength analysis and modal analysis of compressor blade in this paper. As a result,we got its natural frequencies,relevant modal parameters and vibration mode cloud pictures. After analyzing the influence that centrifugal force made on modal parameters,we predicted the expected damage of the blade. Eventually the analysis results will provide the basis for overall performance evaluation,structural crack detection,fatigue life estimation and strength calculation of aircraft engine compressor.

关键词： compressor blade centrifugal load the modal analysis natural frequency vibration performance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：