scholarly journals On the Influence of Parts’ Materials Properties on the Assembly Orientation

2020 ◽  
Vol 3 (1) ◽  
pp. 422-434
Author(s):  
Štefan Václav ◽  
Daynier Rolando Delgado Sobrino ◽  
Ivan Zajačko ◽  
Peter Pokorný
Keyword(s):  
Theoretical Basis ◽  
Mechanical Engineering ◽  
Specific Problem ◽  
Direct Impact ◽  
Assembly Process ◽  
Solid Materials ◽  
Materials Properties ◽  
Flexible Parts

AbstractThe material of a part or component has a decisive impact on the complexity and laboriousness of assembly process. Thus, solid, fragile and flexible parts and components are all handled in a different way. The present paper classifies some of the most common types of materials parts are usually made of, while also analyzing their impact on the assembly process. In mechanical engineering, solid parts are most often used, given that these do not require special measures in known assembly orientation and handling techniques. However, such solid materials pose several challenges as well, and this mainly due to their several specific shapes, which means a specific problem in gripping and especially in their orientation during the assembly process. In this regard, the paper also addresses with one of the most important and assembly-troublesome properties of these solid parts, which the degree of symmetry. The degree of symmetry of solid parts has a direct impact on the complexity and laboriousness of their orientation in assembly. The last part of the paper focuses on the theoretical basis for the calculation of complexity and laboriousness in the assembly of parts.

Study on Mixed Assembly Modeling of Rigid and Flexible Parts for Aerospace Product Virtual Assembly

2010 ◽  
Vol 431-432 ◽  
pp. 9-12 ◽  
Author(s):  
Dan Zhang ◽  
Dun Wen Zuo ◽  
Guang Ming Jiao ◽  
Jian Xie ◽  
Hua Lin Zhou ◽  
...  
Keyword(s):  
Hierarchical Model ◽  
Graph Model ◽  
Virtual Assembly ◽  
Assembly Process ◽  
Assembly Model ◽  
Assembly Modeling ◽  
Cable Harness ◽  
Modeling Process ◽  
Flexible Parts ◽  
And Storage

According to the characteristics of aerospace product, the model representation and storage of the rigid part and cable harness is proposed. The Dendritic Correlative Model of Mixed Assembly of Rigid and Flexible Parts (DCMMA-RFP) is introduced based on the hierarchical model and graph model. The assembly model which realizes the lightweight storage can clearly represent the hierarchy relation and assembly process of aerospace products. The assembly modeling process in the virtual assembly environment is detailed described. Finally the effectiveness of DCMMA-RFP is verified by an example.

Design of Computer Vision and Image Processing Technology Based Car Keys Tooth Identification Detection System

2014 ◽  
Vol 1079-1080 ◽  
pp. 1061-1063 ◽  
Author(s):  
Hong Ying Li
Keyword(s):  
Image Processing ◽  
Computer Vision ◽  
Detection System ◽  
Processing Technology ◽  
Direct Impact ◽  
Assembly Process ◽  
Accurate Identification ◽  
Detection Technology ◽  
Key Aspects ◽  
The Cost

This paper can be used as acar key toothed recognition and detection technology and computer vision, imageprocessing technology combined with interdisciplinary applications. Car lockassembly complicated procedures, identification and car keys tooth detection isone of the key aspects of automotive lock assembly, lock a direct impact on theefficiency of the assembly process. The system can effectively improve theexisting car key tooth detection technology to reduce the cost of car keystooth detection recognition, while also rapid and accurate identification, sothat the entire lock assembly process much more efficient.

Improving Materials Selection in a Mechanical Engineering Capstone Course

2014 ◽  
Vol 1716 ◽  
Author(s):  
Bridget M. Smyser
Keyword(s):  
Mechanical Engineering ◽  
Materials Science ◽  
Selection Process ◽  
Materials Selection ◽  
Capstone Course ◽  
Materials Properties ◽  
High Temperature Alloys ◽  
Physical Prototype ◽  
Systematic Selection ◽  
Capstone Design

ABSTRACTThe Capstone Design course in the Department of Mechanical Engineering at Northeastern University requires students to build a physical prototype by the end of the two semester sequence. Although students have long been required to take an introductory materials science course as part of their curriculum, there was concern that materials selection was a weakness in the design process. Beginning in Fall 2011, the CES Edupack materials selection software was introduced into the Capstone Design class. The current work means to investigate: 1) how to assess designs for effective materials selection 2) whether the new software was actually used by the student teams and 3) whether there was evidence of improved materials selection in the projects that occurred after the new software was introduced. Final capstone design reports from 10 previous terms were examined to look for evidence of systematic materials selection procedures and clear discussion of materials properties as the basis for selecting a material. References to the software were also noted. Results show that 24% of the groups used the CES Edupack software in the first three terms that the software was available. In addition, there was an increase in the number of groups that used a systematic selection process based on research into published materials properties rather than choosing materials based on rough experimentation or convenience. Finally, there has been an increase in the number of projects which consider or incorporate composites, high temperature alloys, and advanced polymers as the software has increased awareness of these options.

scholarly journals Analysis of the motion and stability of the holonomic mechanical system in the arbitrary force field

2021 ◽  
Vol 49 (1) ◽  
pp. 195-205
Author(s):  
Mitra Vesović ◽  
Goran Petrović ◽  
Radoslav Radulović
Keyword(s):  
Force Field ◽  
Mechanical System ◽  
Friction Force ◽  
Mechanical Engineering ◽  
Specific Problem ◽  
Analytical Mechanics ◽  
Stability Of Motion ◽  
Generalized Coordinates ◽  
Theoretical Foundations ◽  
Insight Into

In order to give an insight into the work of the machine before the production and assembly and to obtain good analysis, this paper presents detailed solutions to the specific problem occured in the field of analytical mechanics. In addition to numerical procedures in the paper, a review of the theoretical foundations was made.Various types of analysis are very common in mechanical engineering, due to the possibility of an approximation of complex machines. For the proposed system, Lagrange's equations of the first kind, covariant and contravariant equations, Hamiltons equations and the generalized coordinates, as well as insight in Coulumb friction force are provided.Also, the conditions of static equilibrium are solved numerically and using intersection of the two curves. Finally, stability of motion for the disturbed and undisturbed system was investigated.

The Design and Analysis of the Column of the Small Dual Fork Stacking Robot

2012 ◽  
Vol 591-593 ◽  
pp. 48-51
Author(s):  
Huai Xing Wen ◽  
Qing Fu Zhao
Keyword(s):  
Finite Element ◽  
Theoretical Basis ◽  
The Other ◽  
Direct Impact ◽  
Work Situation ◽  
High Rise ◽  
Finite Element Software ◽  
Overall Performance ◽  
Effective Design ◽  
Ansys Workbench

The stacking robot is the main equipment in the automated high-rise warehouse.It plays an important role in the automated high-rise warehouse. Column is a major component of the stacking robot. Its performance has a direct impact on the overall performance of the stacking robot. In this paper, combining with the actual work situation of the stacking robot, we use finite element software Ansys Workbench to analyze the column of the small dual fork stacking robot in structural mechanics.Based on the analysis,we can find its weakness and improve.It provide a theoretical basis for the actual manufacturing of small dual fork stacking robot. At the same time, it also provides an effective design and analysis methods for the manufacture of the other parts of the small dual fork stacking robot.

scholarly journals Design and development of ultra-light front and rear axle of experimental vehicle

2020 ◽  
Vol 10 (1) ◽  
pp. 232-237
Author(s):  
Jan Kral ◽  
Miroslav Palko ◽  
Maroš Palko ◽  
Ludmila Pavlikova
Keyword(s):  
Fuel Consumption ◽  
Mechanical Engineering ◽  
Rear Axle ◽  
Aerodynamic Drag ◽  
Light Front ◽  
International Competition ◽  
Design And Development ◽  
Solid Materials ◽  
Low Weight ◽  
Experimental Vehicle

AbstractShell Eco-marathon is an international competition to develop a vehicle with the lowest fuel consumption. The Faculty of Mechanical Engineering of the Technical University in Košice has been involved in this competition for 25 years, during which it developed 8 vehicles. For vehicles are important not only low fuel consumption but also high safety. In addition to the low aerodynamic drag of the vehicle, the low weight of the vehicle is important to achieve low fuel consumption. This is achieved by using ultra-light and solid materials in all parts of the vehicle. The latest generation vehicle uses a self-supporting body, which has increased requirements for front and rear stiffness, as discussed in this article.

Dynamics Analysis of Positioning Platform in LED Packaging Equipment

2014 ◽  
Vol 494-495 ◽  
pp. 743-746
Author(s):  
Yong Shan Xiao ◽  
Jun Xia Jiang ◽  
Zhen Yu Zhao
Keyword(s):  
Theoretical Basis ◽  
Dynamics Simulation ◽  
Dynamics Analysis ◽  
Assembly Process ◽  
Machine Performance ◽  
Operation Speed ◽  
Practical Guidance ◽  
The Stability ◽  
Assembly Precision ◽  
Speed And Accuracy

With the continuous development of LED industry, speed and accuracy requirements of LED packaging equipment is more and more high. To further improve the operation speed, it is very important to improve the stability of the positioning platform. Based on MSC.ADAMS(Automatic Dynamic Analysis of Mechanical Systems),the dynamics simulation model of the positioning platform in LED packaging equipment is established, and the effects of the assembly precision is researched on the machine performance. The method provides the theoretical basis and practical guidance for LED assembly process, and thereby can improve the operation speed and stability of the packaging equipment.

Demagnetization Experience in Shipbuilding. Application to Different Industries

NDT World ◽  
2015 ◽  
Vol 18 (3) ◽  
pp. 21-24
Author(s):  
Сорокина ◽  
Nataliya Sorokina ◽  
Закомолдин ◽  
Igor Zakomoldin ◽  
Богачева ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Theoretical Basis ◽  
Mechanical Engineering ◽  
Large Scale ◽  
Residual Magnetization ◽  
Industrial Equipment ◽  
Large Scale Structures ◽  
General Terms ◽  
Scale Structures ◽  
Effective Use

The article proves the necessity for a demagnetization process in mechanical engineering, nondestructive testing, welding. Analysis of demagnetization methods of offshore facilities in shipbuilding, proven experimentally, gives examples of their effective use in other areas of technology. The article gives in general terms a theoretical basis of demagnetization and highlights the need to achieve a stable demagnetized state for large-scale structures. Taking into account the demagnetization experience in shipbuilding, the authors offer a simplified version of a stationary stand designed to reduce a level of products’ residual magnetization. It is shown that the use of demagnetization in various fields of technology has the prospect of improving the quality and efficiency of industrial equipment.

scholarly journals Teacher’s Conflict Tolerance in a Multicultural Educational Environment

2020 ◽  
Vol 6 (11) ◽  
pp. 390-395
Author(s):  
S. Burlakov ◽  
A. Khlebnikov
Keyword(s):  
Conflict Resolution ◽  
General Education ◽  
Theoretical Basis ◽  
Educational Environment ◽  
Direct Impact ◽  
Teaching Activities ◽  
Constructive Conflict ◽  
Education Organization ◽  
The Individual ◽  
Specific Manifestation

The article outlines the trends of creating a conflict-Free educational environment. The aim of the work is to provide a theoretical basis for constructive resolution of pedagogical conflicts, which allows teachers to increase the level of conflict tolerance in the education of schoolchildren. Constant changes in the General education system have a direct impact on the teacher’s teaching activities. Constant stress, the effect of psychological burnout, increased emotional load, lead to contradictions and conflicts among teachers. Today, the problem of conflict resolution is more urgent than ever. Management and constructive conflict resolution is in demand in the multicultural pedagogical space of a General education organization. Conflict tolerance of the teacher is a specific manifestation of psychological stability of the individual. A conflict-resistant teacher is characterized by the ability to effectively prevent, manage and resolve conflicts that have arisen in the course of pedagogical activity.

scholarly journals Determination of Thermal Diffusivity of Austenitic Steel Using Pulsed Infrared Thermography

2014 ◽  
Vol 59 (3) ◽  
pp. 893-897 ◽  
Author(s):  
K. Kochanowski ◽  
W. Oliferuk ◽  
Z. Płochocki ◽  
A. Adamowicz
Keyword(s):  
Thermal Diffusivity ◽  
Austenitic Steel ◽  
Infrared Thermography ◽  
Theoretical Basis ◽  
Room Temperature ◽  
Experimental Results ◽  
Solid Materials ◽  
Simple Method ◽  
Pulsed Infrared Thermography

Abstract The simple method of determining thermal diffusivity of solid materials at room temperature using the pulsed infrared thermography (IRT) is proposed. The theoretical basis of the method and experimental results are presented. The study was conducted on austenitic steel 316L. Theobtained results show that the thermal diffusivity value of the tested steel determined by means of pulsed infrared thermography is very approximate to the values given in the literature, obtained by using more complicated methods. The differences between these values are 0.5%.

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