2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)最新文献_第9页

Study on Three-Dimensional Viscous Flow of An Aero Centrifugal Pump Impeller Based on Unstructured Hexahedron Grid 基于非结构六面体网格的航空离心泵叶轮三维粘性流动研究

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467700

Xianwei Liu, Huacong Li, Xinxing Shi, Jiangfeng Fu

引用次数: 0

Microwave Absorbing Heat Flow Simulation System for Vacuum Thermal Test of Large Microwave Antenna 大型微波天线真空热试验微波吸收热流仿真系统

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467643

Yuwei Sun, Xiaoning Liu, B. Lin

引用次数: 0

A Numerical Modeling Study of The Effects of Various Joint Boundary Conditions on Stiffness Behavior of 6DOF Platform’s Top Plate 不同结合部边界条件对六自由度平台顶板刚度影响的数值模拟研究

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467631

Umar Nawaz Bhatti, Sikandar Khan, Sajid Ali, Mamon M. Horoub

{"title":"A Numerical Modeling Study of The Effects of Various Joint Boundary Conditions on Stiffness Behavior of 6DOF Platform’s Top Plate","authors":"Umar Nawaz Bhatti, Sikandar Khan, Sajid Ali, Mamon M. Horoub","doi":"10.1109/ICMAE.2018.8467631","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467631","url":null,"abstract":"Simulation driven designs are used for the efficient development of high precision devices such as parallel manipulators/platforms. Accurate prediction of these simulations depends upon the fact that how closely actual conditions are incorporated in the analysis. Stiffness is a key property for parallel platforms as it dictates the positional accuracy of the system. Overall stiffness of the platforms is not only driven by the stiffness of the links but also by contact stiffness of joints. Heavily loaded platforms present a special case as these are more prone to system failure if not designed properly. In this work, the stiffness behavior of 6-DOF platform’s top plate subjected to various boundary conditions at joints have been analyzed. Different boundary conditions i.e. volume at joints, surface at joints and line at joints, has been used to depict real joint behavior. The stiffness of platform is analyzed for each of these cases independently and comparison of simulation results for every condition is presented both for static as well as dynamic conditions. This comparison presents a useful outcome for better prediction of static stiffness behavior and dynamic response thus aiding in more accurate design of such applications.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131515904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Variable Compression Component Interpolation Method for Turbine Engine 涡轮发动机可变压缩分量插值方法

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467653

Cheng Ren, Yu-chun Chen, Linyuan Jia, Chao Zhou

引用次数: 0

A Novel Methodology to Estimate Solid Propellant Temperature Before Ignition 一种估算固体推进剂点火前温度的新方法

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/icmae.2018.8467671

V. Coskun, Emre Kutukceken, Mustafa Ozcatalbas, B. Acar

{"title":"A Novel Methodology to Estimate Solid Propellant Temperature Before Ignition","authors":"V. Coskun, Emre Kutukceken, Mustafa Ozcatalbas, B. Acar","doi":"10.1109/icmae.2018.8467671","DOIUrl":"https://doi.org/10.1109/icmae.2018.8467671","url":null,"abstract":"The initial temperature of the solid propellant affects the burning rate of the propellant and performance of the solid rocket engine (SRE). This situation alters the range of the projectile. Thus, before ignition of a SRE the initial temperature of the propellant should be known in order to have accurate range calibrations. Developing a theoretical model to determine the temperature of the propellant would be ordeal. Numerical methods such as finite element (FE) method can be used, but it would be impractical in the field due to relatively long run times and necessity for a solver. In this study, a novel methodology is presented to estimate the temperature of the propellant within a very short time before the ignition. System identification method has been used to derive a mathematical model between the volume averaged temperature of the solid propellant, and ambient temperature and solar radiation. Ambient temperature and solar radiation, which depend on time and location, are the main factors influencing the temperature of the propellant, after the SRE has been taken out of a depot. The derived model has been validated by comparing the results with those obtained from the FE analyses.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116940997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parametric Study of the Compressive Buckling Load of Composite Panels with I-shape Stiffeners 加筋工字复合材料板屈曲压缩载荷的参数化研究

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467689

Yuequan Wang, Shuhua Zhu

{"title":"Parametric Study of the Compressive Buckling Load of Composite Panels with I-shape Stiffeners","authors":"Yuequan Wang, Shuhua Zhu","doi":"10.1109/ICMAE.2018.8467689","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467689","url":null,"abstract":"The effects of I-shape stiffeners parameters were studied on the buckling behaviors of stiffened composite panels under uniform uniaxial compressing loads. The experiments were carried out to obtain the critical buckling loads of I-shape stiffeners stiffened composite panels. A finite element model (FEM) was developed and validated by the experiments. The developed FEM was further used to study the effect of the key stiffener dimensions on the buckling loads and buckling modes of stiffened composite panels, including the width of upper and lower flange, as well as the height of the I-shape stiffeners. The analysis results showed that the width of the lower flange of I-shape stiffeners was the dominant parameter for the buckling resistance of stiffened composite panels comparing to the width of the upper flange and the height of I-shape stiffeners. The stiffened composite panels buckled locally on the skin among stiffeners with the proper design of stiffeners. Otherwise, the buckling loads of the stiffened composite panels decreased due to the global buckling of the stiffened panel when the width of the bottom edge and the height of the I-shape stiffener were excessively large. The developed FEM can be further used to optimize the geometry of I-shape stiffeners in order to obtain the maximum buckling resistance of stiffened composite panel.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123802283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapidly Sampling-Based Trajectory Planning for Spacecraft Proximity 基于快速采样的航天器接近轨迹规划

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467675

Ding Zhou, Zhenhua Yu, Yanquan Zhang, Shunli Li

引用次数: 0

Effect of Manufacturing Tolerances and Assembly Errors on the Characteristics of Small Scale Slider Crank Mechanisms 制造公差和装配误差对小型滑块曲柄机构特性的影响

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467661

M. Damir, E. Rashed, A. Elkhatib

{"title":"Effect of Manufacturing Tolerances and Assembly Errors on the Characteristics of Small Scale Slider Crank Mechanisms","authors":"M. Damir, E. Rashed, A. Elkhatib","doi":"10.1109/ICMAE.2018.8467661","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467661","url":null,"abstract":"Small scale slider crank mechanisms are used in many sophisticated applications, where the accuracy and precision of the mechanisms function are their main performance criteria. The input-output of the mechanism are the main criteria to define its characteristics and hence its capabilities to achieve specific application requirements. The tolerance analysis for the mechanism components are a key element for studying and improving mechanism characteristics and its transmission quality. In this paper kinematics contact approach models for small scale slider crank mechanism are presented. The models consider the mechanism characteristic range, sensitivity and input-output relations. The effect of mechanism manufacturing and assembly errors such as; components tolerances, revolute joints clearances and assembly deviations were investigated. The investigations are applied for the inline and offset types mechanisms. The study elaborates the effect of these errors on the mechanism characteristic, position errors and uncertainty. The effect of revolute joints clearances and offset on the mechanism hysteresis errors, position uncertainty, and dead zones are presented. The results of the proposed contact models are compared with those applying Ting rotatability method. The study is further condensed to define the most appropriate design parameters and manufacturing tolerance according to the permissible system errors.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114568566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

One New Method for Identification of Distributed Dynamic Load Based on Modal Coordinate Transformation 基于模态坐标变换的分布式动荷载识别新方法

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467627

Huangfei Kong, Jinhui Jiang, Ke Wang

引用次数: 1

A Game-Based Guidance Law Against Higher-Speed Maneuvering Penetrator Using Model Predictive Method 基于模型预测方法的针对高速机动穿甲弹的博弈制导律

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467620

Xiaofei Chang, Bo Sun, Jie Yan, W. Fu

引用次数: 0