现代机械工程(英文)最新文献_第4页

The Light Weight Design of Mowing Vehicle Frame with a Combined Method 用组合法进行割草机车架轻量化设计

现代机械工程(英文) Pub Date : 2018-07-17 DOI: 10.4236/MME.2018.83013

Shunming Li, Kun Xu, Jinrui Wang

引用次数: 1

MHD Heat and Mass Transfer of an Oscillatory Flow over a Vertical Permeable Plate in a Porous Medium with Chemical Reaction 具有化学反应的多孔介质中垂直可渗透板上振荡流的MHD传热传质

现代机械工程(英文) Pub Date : 2018-06-12 DOI: 10.4236/MME.2018.83012

M. Zubi

引用次数: 8

The Impact of 3D Printing Technology to the Nigerian Manufacturing GDP 3D打印技术对尼日利亚制造业GDP的影响

现代机械工程(英文) Pub Date : 2018-05-10 DOI: 10.4236/mme.2018.82010

V. Balogun, O. Otanocha, A. O. Ibhadode

引用次数: 4

Determination of Factors and Quality Control of Car Painting Based on FMEA and SPC.V2 基于FMEA和SPC.V2的汽车涂装影响因素的确定及质量控制

现代机械工程(英文) Pub Date : 2018-05-09 DOI: 10.4236/MME.2018.82011

M. Rana, Xinmin Zhang, Sayed Abdul Akher

{"title":"Determination of Factors and Quality Control of Car Painting Based on FMEA and SPC.V2","authors":"M. Rana, Xinmin Zhang, Sayed Abdul Akher","doi":"10.4236/MME.2018.82011","DOIUrl":"https://doi.org/10.4236/MME.2018.82011","url":null,"abstract":"The global automotive industry demands world-class levels of product quality, productivity, and competitiveness as well as continual improvement. To achieve this goal, many vehicle manufacturers companies use quality control tools to improve the quality of the product with zero defects and highly satisfied to the customer. Nowadays, there are a lot of quality tools applied to solve the problem quickly but it’s still the fact to find out good and efficient solving way. The study emphasizes the identification of potential failure which failures may have encountered in the production process and it will lead to car scrap, rework and influence of the internal production and quality target. After the complete study of the manufacturing process and production data-failure causes, failure rate and data etc. FMEA discover the weak processes in the form of higher risk priority number in the manufacturing of the car painting process, which required reducing by identifying and implementing of the defects and this will improve the process quality of the painting surface of the car. To analysis, the improvement of the car surface defects SPC (Statistical Process Control) tools are more efficient where can easily visible the defects trends. SPC chart is chronological graphs of process data that are used in manufactures industries to help understand, control and improve the process and that although based on statistical theory area easy for practitioners to use and interpret. In order to orient goal of zero defects of the car, surface uses the PFMEA technique to prioritize the defects and statistically analyze the roots cause of the defect and control the defects through continues improvements process.","PeriodicalId":69007,"journal":{"name":"现代机械工程(英文)","volume":"08 1","pages":"158-177"},"PeriodicalIF":0.0,"publicationDate":"2018-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47972869","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: 5

An Underactuated Linkage Finger Mechanism for Hand Prostheses 一种用于假肢的欠驱动联动手指机构

现代机械工程(英文) Pub Date : 2018-05-09 DOI: 10.4236/MME.2018.82009

H. Herath, R. A. R. C. Gopura, T. Lalitharatne

{"title":"An Underactuated Linkage Finger Mechanism for Hand Prostheses","authors":"H. Herath, R. A. R. C. Gopura, T. Lalitharatne","doi":"10.4236/MME.2018.82009","DOIUrl":"https://doi.org/10.4236/MME.2018.82009","url":null,"abstract":"The underactuated fingers used in numerous robotic systems are evaluated by grasping force, configuration space, actuation method, precision of operation, compactness and weight. In consideration of all such factors a novel linkage based underactuated finger with a self-adaptive actuation mechanism is proposed to be used in prosthetics hands, where the finger can accomplish flexion and extension. Notably, the proposed mechanism can be characterized as a combination of parallel and series links. The mobility of the system has been analyzed according to the Chebychev-Grubler-Kutzbach criterion for a planar mechanism. With the intention of verifying the effectiveness of the mechanism, kinematics analysis has been carried out, by means of the geometric representation and Denavit-Hartenberg (D-H) parameter approach. The presented two-step analysis followed by a numerical study, eliminates the limitations of the D-H conversion method to analyze the robotics systems with both series and parallel links. In addition, the trajectories and configuration space of the proposed finger mechanism have been determined by the motion simulations. A prototype of the proposed finger mechanism has been fabricated using 3D printing and it has been experimentally tested to validate its functionality. The kinematic analysis, motion simulations, experimental investigations and finite element analysis have demonstrated the effectiveness of the proposed mechanism to gain the expected motions.","PeriodicalId":69007,"journal":{"name":"现代机械工程(英文)","volume":"08 1","pages":"121-139"},"PeriodicalIF":0.0,"publicationDate":"2018-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45161475","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: 5

Low Cycle Fatigue Life Estimation and Tracking for Industrial Gas Turbine Blades Using Fatigue Factor Approach 基于疲劳系数法的工业燃气轮机叶片低周疲劳寿命估计与跟踪

现代机械工程(英文) Pub Date : 2018-05-09 DOI: 10.4236/mme.2018.82008

E. G. Saturday, T. Isaiah

引用次数: 1

Bending Analysis of a Filament-Wound Composite Tube 纤维缠绕复合材料管的弯曲分析

现代机械工程(英文) Pub Date : 2018-02-28 DOI: 10.4236/MME.2018.81005

G. Szabó, K. Varadi, D. Felhős

引用次数: 7

Tribological Properties and Machining Performance of Vegetable Oil Based Metal Working Fluids—A Review 植物油基金属加工液的摩擦学性能和加工性能综述

现代机械工程(英文) Pub Date : 2018-01-16 DOI: 10.4236/MME.2018.81004

T. P. Jeevan, S. R. Jayaram

{"title":"Tribological Properties and Machining Performance of Vegetable Oil Based Metal Working Fluids—A Review","authors":"T. P. Jeevan, S. R. Jayaram","doi":"10.4236/MME.2018.81004","DOIUrl":"https://doi.org/10.4236/MME.2018.81004","url":null,"abstract":"Lubricants are playing an important role in world industrial and economic development, mainly by reducing friction and wear in mechanical contacts. The outlook for eco-friendly MWFs for the next decade is 15% of global volume share. Due to ever increasing demand for environmentally acceptable products suitable for use as MWFs, vegetable oil-based MWFs are drawing the attention of researchers across the globe. Owing to the desirable properties of vegetable oils as cutting fluids, vegetable oil-based cutting fluids play an important role in conserving the environment by means of sustainability. This paper focuses on various vegetable oil being developed to promote biodegradable MWFs across the world. The performance of vegetable oils with respect to cutting and thrust force, tool wear, temperature, surface roughness in turning, drilling, milling and grinding a wide variety of materials are studied and reported. The review also throws light on the tribological behavior of vegetable oils that influence the lubricity in Metal working process. The review reveals that vegetable oils offer an alternative, eco-friendly and sustainable MFWs for the future of manufacturing.","PeriodicalId":69007,"journal":{"name":"现代机械工程(英文)","volume":"08 1","pages":"42-65"},"PeriodicalIF":0.0,"publicationDate":"2018-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45912277","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: 26

Thermal-Mechanical Coupled FE Analysis for Rotary Shaft Seals 旋转轴密封的热力耦合有限元分析

现代机械工程(英文) Pub Date : 2018-01-16 DOI: 10.4236/MME.2018.81007

G. Szabó, K. Varadi

{"title":"Thermal-Mechanical Coupled FE Analysis for Rotary Shaft Seals","authors":"G. Szabó, K. Varadi","doi":"10.4236/MME.2018.81007","DOIUrl":"https://doi.org/10.4236/MME.2018.81007","url":null,"abstract":"The aim of this paper is to model the steady-state condition of a rotary shaft seal (RSS) system. For this, an iterative thermal-mechanical algorithm was developed based on incremental finite element analyzes. The behavior of the seal’s rubber material was taken into account by a large-strain viscoelastic, so called generalized Maxwell model, based on Dynamic Mechanical Thermal Analyses (DMTA) and tensile measurements. The pre-loaded garter spring was modelled with a bilinear material model and the shaft was assumed to be linear elastic. The density, coefficient of thermal expansion and the thermal conductance of the materials were taken into consideration during simulation. The friction between the rotary shaft seal and the shaft was simplified and modelled as a constant parameter. The iterative algorithm was evaluated at two different times, right after assembly and 1 h after assembly, so that rubber material’s stress relaxation effects are also incorporated. The results show good correlation with the literature data, which state that the permissible temperature for NBR70 (nitrile butadiene rubber) material contacting with ~80 mm shaft diameter, rotating at 2600/min is 100°C. The results show 107°C and 104°C for the two iterations. The effect of friction induced temperature, changes the width of the contact area between the seal and the shaft, and significantly reduces the contact pressure.","PeriodicalId":69007,"journal":{"name":"现代机械工程(英文)","volume":"8 1","pages":"95-110"},"PeriodicalIF":0.0,"publicationDate":"2018-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48505120","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

Design and Optimization of Comb Drive Accelerator for High Frequency Oscillation 高频振荡梳状驱动加速器的设计与优化

现代机械工程(英文) Pub Date : 2018-01-16 DOI: 10.4236/MME.2018.81001

Zichen Zhang

引用次数: 1