Journal of Mechanical Engineering and Automation最新文献_第2页

Numerical Simulation of the Kinematic Behavior of a Twist Beam Suspension Using Finite Element Method 扭转梁悬架运动特性的有限元数值模拟

Journal of Mechanical Engineering and Automation Pub Date : 2012-12-01 DOI: 10.5923/J.JMEA.20120206.05

M. Silveira, L. Vasconcelos, A. Christoforo

{"title":"Numerical Simulation of the Kinematic Behavior of a Twist Beam Suspension Using Finite Element Method","authors":"M. Silveira, L. Vasconcelos, A. Christoforo","doi":"10.5923/J.JMEA.20120206.05","DOIUrl":"https://doi.org/10.5923/J.JMEA.20120206.05","url":null,"abstract":"The use of numerical simu lations in the design of automotive components has contributed to reducing the design time, decreasing the prototypes costs and increasing reliability of the final product. In addition, the search for solutions of lo w cost and satisfactory performance is essential for the success of the product in the world market. Twist-beam suspensions are an examp le of this co mpetit ive environ ment. This solution presents a very satisfactory performance when applied to light vehicles and has an excellent relationship between cost / benefit in the automotive market. It is estimated that more than 90% of light vehicles manufactured in emergent countries use this type of suspension at the rear. Despite its acceptance in the automotive market there are few studies related to the twist -beam suspension, perhaps because of its simplicity and low cost design and ease of manufa cturing. Un like other types of suspension, the twist-beam has a flexib le torsion beam connecting the swing arms. The evaluation of the deformation of this flexib le element becomes essential to understand their kinemat ic behavior. Thus, the use of software based only on the rigid body dynamics is not suitable to analy ze this type of suspension. The main objective of this work was to evaluate through numerical simu lation based on finite element method, the influence of the torsion beam on the kinematic behavior of a twist-beam suspension. It was evaluated the influence of both the position and orientation of the torsion beam on the suspension, under symmetric and asymmetric loadings.","PeriodicalId":383435,"journal":{"name":"Journal of Mechanical Engineering and Automation","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115243129","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

Experimental Study under Real-World Conditions to Develop Fault Detection for Automated Vehicles 基于现实条件的自动驾驶车辆故障检测实验研究

Journal of Mechanical Engineering and Automation Pub Date : 2012-12-01 DOI: 10.5923/J.JMEA.20120205.02

N. Hashimoto, U. Ozguner, M. Yokozuka, S. Kato, O. Matsumoto, S. Tsugawa

{"title":"Experimental Study under Real-World Conditions to Develop Fault Detection for Automated Vehicles","authors":"N. Hashimoto, U. Ozguner, M. Yokozuka, S. Kato, O. Matsumoto, S. Tsugawa","doi":"10.5923/J.JMEA.20120205.02","DOIUrl":"https://doi.org/10.5923/J.JMEA.20120205.02","url":null,"abstract":"Automated vehicles can contribute to the improvement of transportation through their high capacity, increased safety, low emission and high efficiency. However, unstable conditions of automated mobile systems, which include automated vehicles and mobile robots) can cause serious problems, andthus, automated mobile system requiresto be highly reliable. The objective of this research is to develop on analgorith mfor detection faults (unstable condition) in an automated mobile system and to improve the overall reliability of this system. In this study, we in itially stored and updated a few patterns of data constellations under normal and unstable conditions for fault identification through real-world experiments. Multiple experiments were performed in a public urban area (with course distance per set beingapproximately1.1(km)), where several pedestrians, bicycles, and other robots were also present. The method used for detecting faults utilizes Mahalanobis distance, correlat ion coefficient, and linearization in order to enhance the accuracy of detecting faults;further, because real-world experimental conditions vary frequently,it is essential for the proposed method to be robust undervarious conditions. The main feature of this study is that it involves the use of experimental results obtained under real-world conditions, to develop a fault detection algorithm and evaluate its validity. In addition, simu lations were performed using the real-world experimental data, wh ich includes newly logged experimental data after the algorithm was developed in order to evaluate the validity of the proposed algorithm. The simulat ion results show that the proposed algorithm detects faults accurately, thus, they prove its validity.","PeriodicalId":383435,"journal":{"name":"Journal of Mechanical Engineering and Automation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133533537","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: 2

Complex Research of Perspective Suspension for Locomotives 机车视角悬架的复杂研究

Journal of Mechanical Engineering and Automation Pub Date : 2012-12-01 DOI: 10.5923/J.JMEA.20120206.04

L. Savin, E. Slivinsky, D. Klimov, S. Radin

引用次数: 0

Novel Gait for an Anthropoid and Its Joint Demeanors while Stepping Up and Down Stairs 类人猿上下楼梯时的新步态及其关节行为

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20110101.02

M. Akhtaruzzaman, A. Shafie

引用次数: 4

Critical Parameters Effecting the Rapid Prototyping Surface Finish 影响快速成型表面光洁度的关键参数

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20110101.03

P. Vijay, P. Danaiah, K. Rajesh

{"title":"Critical Parameters Effecting the Rapid Prototyping Surface Finish","authors":"P. Vijay, P. Danaiah, K. Rajesh","doi":"10.5923/J.JMEA.20110101.03","DOIUrl":"https://doi.org/10.5923/J.JMEA.20110101.03","url":null,"abstract":"A component can be manufactured in several ways. Rapid Prototyping technique is one among the material adding manufacturing process, building up its unique potential in the present scenario. This technique helps manufacture a product from the basic design of the component, thus optimizing the iterative product development process time and creating geometrically complex parts to precise dimensions. In the Rapid Prototyping process, surface finish is critical as it can affect the part accuracy, reduce the post-processing costs and improve the functionality of the parts. This paper presents an ex- perimental design technique for determining the optimal surface finish of a part built by varying Build Orientation, Layer Thickness and keeping other parameters constant using the Fused Deposition Modeling (FDM) process. The design inves- tigates the effect of these parameters on the surface finish. Experiments were conducted using a fractional factorial design with two levels for Layer Thickness and three levels for Build Orientation factor. The results are statistically analyzed to determine the significant factors and their interactions. The significant factors, their interactions and the optimum settings are proposed.","PeriodicalId":383435,"journal":{"name":"Journal of Mechanical Engineering and Automation","volume":"141 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129138018","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: 42

Numerical Model to Study of Contact Force in A Cylindrical Roller Bearing with Technical Mechanical Event Simulation 基于技术力学事件仿真的圆柱滚子轴承接触力数值模型研究

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20110101.01

L. Edwin

引用次数: 25

Relevance of Entreprenuership Curriculum to Engineering Education in Nigeria 创业课程与尼日利亚工程教育的相关性

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20120201.03

I. Garba, Laminu Shettima Kuburi, F. Anafi

{"title":"Relevance of Entreprenuership Curriculum to Engineering Education in Nigeria","authors":"I. Garba, Laminu Shettima Kuburi, F. Anafi","doi":"10.5923/J.JMEA.20120201.03","DOIUrl":"https://doi.org/10.5923/J.JMEA.20120201.03","url":null,"abstract":"Engineering entrepreneur is of great importance to know about him on the basis of individual consideration. These consideration give him ample scope to face his own self by asking the question \"Who I am?\" If he can give meaningful answer to this complex question with exemplary courage and utter personal disregard to being exposed, then it helps him in getting a fair idea about himself. On the whole it helps him to making the right decision in choosing the right path for getting involved for deciding the future course of action. This is nothing but a self-identification process. After having being properly identify his strength, weakness and ability, he can make a decision of his choice. The concept of growth theory seems to be closely related in explaining the theory of entrepreneurship development as well. After the Second World War entrepre- neurship received new meaning for attaining economic development within the shortest possible time. To analyse resources utilization and Proper utilization of human potentiality, special attention to take up new activities and to create self-employment and generation of employment opportunity for better economic gain.","PeriodicalId":383435,"journal":{"name":"Journal of Mechanical Engineering and Automation","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134221101","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: 2

Fabrication of Polymeric Biochips With µ-Fluidic Channel by Injection Molding Technology 微流控通道聚合物生物芯片的注射成型研究

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20120201.04

Gun-Hee Kim, Jeong-Won Lee, Y. Heo, G. Yoon

{"title":"Fabrication of Polymeric Biochips With µ-Fluidic Channel by Injection Molding Technology","authors":"Gun-Hee Kim, Jeong-Won Lee, Y. Heo, G. Yoon","doi":"10.5923/J.JMEA.20120201.04","DOIUrl":"https://doi.org/10.5923/J.JMEA.20120201.04","url":null,"abstract":"The polymeric biochip has been focused as a cheap, rapid and simplified method to replace the existing bio- chemical laboratory works. This biochip is formed miniaturized lab functionalities on a chip with the development of MEMS technology. This has many micro-fluidic channels for the flow of sample and reagents, mixing and detection task. Existing technologies for the biochip fabrication are utilizing various micro pattern forming methods, such as etching, LIGA, and micro-imprinting etc. In this study, an injection molding process with micro mold was applied to the mass pro- duction of polymeric biochip which contains micro-fluidic channel. Micro cutting process was applied to fabricate the core feature for molding micro-fluidic channel. Therefore, a series of micro cutting experiments using micro endmill were per- formed to determine optimum cutting conditions. Besides, the low temperature micro-cutting experiments using micro endmills were performed to improve the quality of micro mold core by reducing the burr and surface roughness. After the verification of low temperature micro-cutting process efficiency, this process was used to fabricate required mold core for micro feature. Finally, test injection molding process using manufactured micro mold and COC polymer were performed, and then the results were investigated.","PeriodicalId":383435,"journal":{"name":"Journal of Mechanical Engineering and Automation","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129657635","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

Effect of Shape Memory Alloy Wires on Natural Frequency of Plates 形状记忆合金线材对板材固有频率的影响

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20120201.05

M. Barzegari, M. Dardel, A. Fathi, M. Pashaei

引用次数: 5

Computer-Aided Modeling and Analysis of an Energy-Saving Refrigerating System 节能制冷系统的计算机辅助建模与分析

Journal of Mechanical Engineering and Automation Pub Date : 2012-08-31 DOI: 10.5923/J.JMEA.20120201.02

Zheng Li

引用次数: 2