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Mechanical Behaviour of Small Load Bearing Structures Fabricated by 3D Printing 3D打印制造的小型承重结构的力学性能
Q4 Engineering Pub Date : 2019-01-01 DOI: 10.18485/aeletters.2019.4.3.2
Nikola Palić, V. Slavkovic, Ž. Jovanović, F. Živić, N. Grujovic
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引用次数: 6
Deformation Response of Dual Phase Steel in Static and Dynamic Conditions 静态和动态条件下双相钢的变形响应
Q4 Engineering Pub Date : 2019-01-01 DOI: 10.18485/AELETTERS.2019.4.2.1
M. S. Kumar, E. Schmidová
In this work, strength and plastic deformation effect of the dual phase steel are analysed in the static and dynamic conditions. Since the dual phase steel is extensively used in the outer body parts of the automotive vehicles, their dynamic strength and plastic strain energy absorption during the crash are essential. Dynamic strength of the dual phase steel is examined using the pendulum impact hammer tester machine. Spread of the plastic strain during the crash is an important factor for the energy absorption to passive safety, which is examined using the local hardness measurement using the Vickers hardness and local indentation yield strength is calculated using the cylindrical indenter and obtained force-depth results are analysed using the Hencky theory for the plane strain indentation. Further, tested samples are observed using the scanning electron microscopy for the fracture response after the static and dynamic tests. ARTICLE HISTORY Received: 03.04.2019. Accepted: 31.05.2019. Available: 30.06.2019.
本文分析了双相钢在静态和动态条件下的强度和塑性变形效应。由于双相钢广泛应用于汽车车身外件,其动态强度和碰撞时的塑性应变能吸收是至关重要的。采用摆锤冲击试验机对双相钢的动强度进行了试验研究。碰撞过程中塑性应变的扩散是影响被动安全吸能的重要因素,采用维氏硬度法进行了局部硬度测量,采用圆柱压头计算了局部压痕屈服强度,并采用henky理论对平面应变压痕进行了力深分析。此外,使用扫描电子显微镜观察测试样品在静态和动态测试后的断裂响应。收稿日期:03.04.2019。接受:31.05.2019。可用:30.06.2019。
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引用次数: 1
Experimental Determination of Worm Gearing Efficiency 蜗杆传动效率的实验测定
Q4 Engineering Pub Date : 2019-01-01 DOI: 10.18485/aeletters.2019.4.4.2
A. Skulić, Blaža Stojanović, S. Radosavljević, S. Veličković
: This paper deals with the analysis of impact of various factors on power loss and efficiency of worm gearing. Factors that significantly affect the power losses are, principally, types of materials of meshed gears and geometry of worm pair, type and viscosity of lubricating oils, input rotational speed, worm shape, loading, temperature, etc. Results of experimental tests of worm gearing efficiency are also presented in the paper. Tests were conducted according to planned experiment schedule on specialized device AT200, where single-stage worm gearboxes with transmission ratio i=18 has been used. During the test stage, oils of different viscosities (ISOVG 220, ISOVG 460 and ISOVG 680) have been used and their impact on efficiency was monitored. The values of efficiency level are determined at different input rotational speeds (circumferential velocity) and output torques (loads).
本文分析了各种因素对蜗杆传动的功率损失和效率的影响。影响功率损失的主要因素是啮合齿轮的材料类型和蜗杆副的几何形状、润滑油的类型和粘度、输入转速、蜗杆形状、载荷、温度等。文中还介绍了蜗杆传动效率的实验测试结果。试验在AT200专用装置上按照计划的试验进度进行,试验采用传动比为i=18的单级蜗杆齿轮箱。在测试阶段,使用了不同粘度的油(ISOVG 220、ISOVG 460和ISOVG 680),并监测了它们对效率的影响。在不同的输入转速(周向速度)和输出扭矩(负载)下确定效率水平的值。
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引用次数: 1
Research of Water Hydraulic Components and Systems from Aspects of Quality of Life 从生活质量的角度研究水液压元件及系统
Q4 Engineering Pub Date : 2019-01-01 DOI: 10.18485/aeletters.2019.4.3.3
N. Todić, S. Savić, S. Jovanović, Z. Djordjević
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引用次数: 0
Compensation of Influence of Protector Compression Coefficients in Tyre Industry 轮胎工业中保护器压缩系数影响的补偿
Q4 Engineering Pub Date : 2019-01-01 DOI: 10.18485/AELETTERS.2019.4.1.5
Jasmina Radosavljević, Amelija Djordjević, B. Zlatkovic, B. Samardzić
The system for protector cooling (protective rubber strip) in the tyre industry is presented in this paper. The analysis of compensation of protector compression coefficients influence on the protector length change between two neighbor transporters is done. Also, the compensation of protector compression coefficients influence on all transporters velocities is analyzed. Modelling and simulation of transportation system is performed in Matlab/Simulink. ARTICLE HISTORY Received: 25.03.2019. Accepted: 30.03.2019. Available: 31.03.2019.
本文介绍了轮胎工业中的保护器冷却系统(保护胶条)。分析了保护器压缩系数的补偿对相邻输运子之间保护器长度变化的影响。分析了保护器压缩系数补偿对各传输速度的影响。在Matlab/Simulink中对运输系统进行建模和仿真。收稿日期:25.03.2019。接受:30.03.2019。可用:31.03.2019。
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引用次数: 3
An Integrated Approach for Design and Manufacture of Plastic Products 塑料制品设计与制造的一体化方法
Q4 Engineering Pub Date : 2019-01-01 DOI: 10.18485/aeletters.2019.4.1.1
Ivan Matin, D. Vukelić, M. Hadzistevic, B. Strbac, D. Lukić
The aim of this paper is to present an integrated design procedure for plastic part development and manufacture. Reverse engineering (RE), reengineering (ReE) and mold design have been incorporated to infuse agile characteristics in the proposed design and development process. The integration of RE and ReE presented in this paper accelerate the design process and provide information necessary for complete injection molding process of plastic parts. The purpose is to create a new object geometrically similar to the existing object. The new object must have better mechanical properties and more favorable geometry from the standpoint of mold ability. This paper also, describes a methodology for quality geometry check of the manufactured part that is need for verified the used integrated CAD/CAE technologies. ARTICLE HISTORY Received: 16.01.2019. Accepted: 01.03.2019. Available: 31.03.2019.
本文的目的是为塑料零件的开发和制造提供一个集成的设计程序。将逆向工程(RE)、再工程(ReE)和模具设计结合起来,在提出的设计和开发过程中注入敏捷特性。本文提出的稀土和稀土的集成加速了设计过程,并为塑料零件的完整注射成型工艺提供了必要的信息。目的是创建一个在几何上与现有对象相似的新对象。从模具能力的角度来看,新材料必须具有更好的力学性能和更有利的几何形状。本文还介绍了一种用于验证所使用的CAD/CAE集成技术的制造零件质量几何检查的方法。收稿日期:16.01.2019。接受:01.03.2019。可用:31.03.2019。
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引用次数: 1
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Applied Engineering Letters
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