Strojniski Vestnik-Journal of Mechanical Engineering最新文献

Dynamic Modelling, Experimental Identification and Computer Simulations of Non-Stationary Vibration in High-Speed Elevators 高速电梯非平稳振动的动力学建模、实验辨识与计算机仿真

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-06-15 DOI: 10.5545/SV-JME.2020.7179

R. Đokić, J. Vladić, M. Kljajin, V. Jovanović, G. Marković, Mirko Karakasic

{"title":"Dynamic Modelling, Experimental Identification and Computer Simulations of Non-Stationary Vibration in High-Speed Elevators","authors":"R. Đokić, J. Vladić, M. Kljajin, V. Jovanović, G. Marković, Mirko Karakasic","doi":"10.5545/SV-JME.2020.7179","DOIUrl":"https://doi.org/10.5545/SV-JME.2020.7179","url":null,"abstract":"Modelling the dynamic behaviour of elevators with high lifting velocities (contemporary elevators in building construction and mine elevators) is a complex task and an important step in the design process and creating conditions for safe and reliable exploitation of these machines. Due to high heights and lifting velocities, the standard procedures for dynamic exploitation are not adequate. The study presents the method of forming a dynamic model to analyse nonstationary vibrations of a rope with time-varying length with nonholonomic boundary conditions in the position where the rope is connected with the cabin (cage) and in the upcoming point of its winding onto the pulley (drum). A unique method was applied to identify the basic parameters of the dynamic model (stiffness and damping) based on experimental measures for a concrete elevator. Due to the verification of this procedure, the experiment was conducted on a mine elevator in RTB Bor, Serbia. Using the obtained computer-experimental results, the simulations of the dynamic behaviour of an empty and loaded cage were shown. In addition, the study shows the specific method as the basis for forming a control program that would enable the decrease in vertical vibrations during an elevator starting and braking mode.","PeriodicalId":49472,"journal":{"name":"Strojniski Vestnik-Journal of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82741143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reliability-Based Design Optimization of Pump Penetration Shell Accounting for Material and Geometric Non-Linearity 考虑材料非线性和几何非线性的泵穿壳可靠性优化设计

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-06-15 DOI: 10.5545/SV-JME.2021.7104A

Gautham Velayudhan, P. Venugopal, Ebron Shaji Gnanasigamony Thankareathenam, M. Selvakumar, Thyla Pudukarai Ramaswamy

{"title":"Reliability-Based Design Optimization of Pump Penetration Shell Accounting for Material and Geometric Non-Linearity","authors":"Gautham Velayudhan, P. Venugopal, Ebron Shaji Gnanasigamony Thankareathenam, M. Selvakumar, Thyla Pudukarai Ramaswamy","doi":"10.5545/SV-JME.2021.7104A","DOIUrl":"https://doi.org/10.5545/SV-JME.2021.7104A","url":null,"abstract":"The roof slab of the nuclear reactor supports all the components and sub-systems. Roof slab needs to resist the seismic loads in accordance with load-carrying criteria. The static stress analysis of the reactor roof slab reveals that high-stress concentration was present in the pump penetration shell (PPS) which supports the primary sodium pump. This paper presents the assessment of collapse load and optimization of pump penetration shell, through the reliability approach, accounting for material nonlinearity, geometrical nonlinearity and randomness in loading. In addition to that, the load-carrying capacity of PPS was determined considering two different materials, viz., IS2062 and A48P2. The design of experiments (DoE) was formulated considering the flange angle and flange thickness as parameters. An empirical model for load function was formulated from the results of the collapse load obtained for various combinations of design parameters. The above function was used to perform the reliability-based geometry optimization of PPS of the roof slab.","PeriodicalId":49472,"journal":{"name":"Strojniski Vestnik-Journal of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88220581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flat Specimen Shape Recognition Based on Full-Field Optical Measurements and Registration Using Mapping Error Minimization Method 基于全视野光学测量的平面试样形状识别与最小映射误差配准

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-05-26 DOI: 10.5545/SV-JME.2021.7111

Andraž Maček, J. Urevc, M. Halilovič

{"title":"Flat Specimen Shape Recognition Based on Full-Field Optical Measurements and Registration Using Mapping Error Minimization Method","authors":"Andraž Maček, J. Urevc, M. Halilovič","doi":"10.5545/SV-JME.2021.7111","DOIUrl":"https://doi.org/10.5545/SV-JME.2021.7111","url":null,"abstract":"In the paper, an alignment methodology of finite element and full-field measurement data of planar specimens is presented. The alignment procedure represents an essential part of modern material response characterisation using heterogeneous strain-field specimens. The methodology addresses both the specimen recognition from a measurement’s image and the alignment procedure and is designed to be applied on a single measurement system. This is essential for its practical application because both processes, shape recognition and alignment, must be performed only after the specimen is fully prepared for the digital image correlation (DIC) measurements (white background and black speckles) and placed into a testing machine. The specimen can be observed with a single camera or with a multicamera system. The robustness of the alignment method is presented on a treatment of a specimen with a metamaterial-like structure and compared with the well-known iterative closest point (ICP) algorithm. The performance of the methodology is also demonstrated on a real DIC application.","PeriodicalId":49472,"journal":{"name":"Strojniski Vestnik-Journal of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88591387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating HVOF喷涂可持续温度依赖碳基复合材料涂层的残留、腐蚀和摩擦学行为

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-04-26 DOI: 10.5545/SV-JME.2021.7101

A. Tyagi, Q. Murtaza, R. S. Walia

引用次数: 6

Studying the Performance of Cutting Carbon Fibre-Reinforced Plastic Using an Abrasive Water Jet Technique 磨料水射流切割碳纤维增强塑料的性能研究

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-04-26 DOI: 10.5545/SV-JME.2021.7141

A. A. Hussien, I. Qasem, P. Kataraki, W. Al-Kouz, Ayub Ahmed Janvekar

引用次数: 3

Optimization of the Internal Roller Burnishing Process for Energy Reduction and Surface Properties 内辊抛光工艺的节能和表面性能优化

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-04-26 DOI: 10.5545/SV-JME.2021.7106

T. Nguyen, Minh-Thai Le

{"title":"Optimization of the Internal Roller Burnishing Process for Energy Reduction and Surface Properties","authors":"T. Nguyen, Minh-Thai Le","doi":"10.5545/SV-JME.2021.7106","DOIUrl":"https://doi.org/10.5545/SV-JME.2021.7106","url":null,"abstract":"Improving the surface quality after burnishing operation has been the subject of various published investigations. Unfortunately, the trade-off analysis between the energy consumption and surface characteristics of the internal burnishing has been not addressed due to the expensive cost and huge efforts required. The objective of the present work is to optimize burnishing factors, including the spindle speed, burnishing feed, depth of penetration, and the number of rollers for minimizing the energy consumed in the burnishing time, as well as surface roughness and maximizing Rockwell hardness. An adaptive neuro-based-fuzzy inference system (ANFIS) was used to develop burnishing objectives in terms of machining parameters. The optimization outcomes were selected using an evolution algorithm, specifically the non-dominated sorting particle swarm optimization (NSPSO). The results of the proposed ANFIS models are significant and can be employed to predict response values in industrial applications. The optimization technique comprising the ANFIS and NOPSO is a powerful approach to model burnishing performances and select optimal parameters as compared to the trial and error method as well as operator experience. Finally, the optimal solution can help to achieve the improvements in the energy consumed by 16.3 %, surface roughness by 24.3 %, and Rockwell hardness by 4.0 %, as compared to the common values","PeriodicalId":49472,"journal":{"name":"Strojniski Vestnik-Journal of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72429444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Design of a Throat-extended FDM Extruder for Multi-axis 3D Printing 多轴3D打印扩喉式FDM挤出机设计

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-04-26 DOI: 10.5545/SV-JME.2021.7124

Hao Liu, Zhoupeng Liu, S. Hao

引用次数: 6

HIL Evaluation of a Novel Real-time Energy Management System for an HEV with a Continuously Variable Transmission 一种新型无级变速器混合动力汽车实时能量管理系统的HIL评价

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-04-26 DOI: 10.5545/SV-JME.2020.7017

A. Taghavipour, A. Alipour

{"title":"HIL Evaluation of a Novel Real-time Energy Management System for an HEV with a Continuously Variable Transmission","authors":"A. Taghavipour, A. Alipour","doi":"10.5545/SV-JME.2020.7017","DOIUrl":"https://doi.org/10.5545/SV-JME.2020.7017","url":null,"abstract":"One of the most important challenges facing automotive engineers is reducing vehicle fuel consumption and improving the drivability index. Modern hybrid electric powertrains play an important role in reducing fuel consumption. Continuously variable transmission (CVT) is an automatic transmission that can change the gear ratio seamlessly using a belt and pulleys. CVT performs with infinite gear ratios. Controlling and determining the optimal gear ratio, especially in a complex hybrid powertrain, is a major challenge. Therefore, a multi-parametric model predictive controller with real-time implementation capability is proposed that can handle the energy management task concurrently with gear shifting strategy in a parallel pre-transmission hybrid electric vehicle. The proposed controller hardware-in-the-loop (HIL) validation procedure on the high-fidelity Autonomie model shows significant improvement in fuel economy while maintaining drivability in three different driving schedules. HIL evaluation guarantees the real-time capability and the proposed controller readiness to be implemented to real-world control hardware.","PeriodicalId":49472,"journal":{"name":"Strojniski Vestnik-Journal of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87140464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Strain-Based Method to Estimate Longitudinal Force for Intelligent Tires by Using a Physics-Based Model 基于物理模型的智能轮胎纵向力应变估计方法

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-04-26 DOI: 10.5545/SV-JME.2020.7068

Zhou Haichao, Huiyun Li, Yang Jian, Chen Qingyun, Guolin Wang, Han Tong, Jieyu Ren, Te Ma

引用次数: 5

Hot Incremental Forming of Biocomposites Developed from Linen Fibres and a Thermoplastic Matrix 亚麻纤维和热塑性基质生物复合材料的热增量成形

IF 1.7 4区工程技术

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2021-03-22 DOI: 10.5545/SV-JME.2020.6936

Sandino Torres, Roberto Ortega, P. Acosta, Edisson Caldeŕon

{"title":"Hot Incremental Forming of Biocomposites Developed from Linen Fibres and a Thermoplastic Matrix","authors":"Sandino Torres, Roberto Ortega, P. Acosta, Edisson Caldeŕon","doi":"10.5545/SV-JME.2020.6936","DOIUrl":"https://doi.org/10.5545/SV-JME.2020.6936","url":null,"abstract":"The use of biodegradable materials has a growing field of application due to environmental concerns, however, scientific research on incremental forming using biomaterials is scarce. Thus, this study focuses on the single point incremental forming (SPIF) process applied to a composite sheet that combines a biodegradable thermoplastic matrix (Solanyl) reinforced with natural fibres (flax). The influence of the process parameters on the final geometry is determined, evaluating the effect of the following factors: step depth, wall angle and temperature reached during the process. Additionally, a heated aqueous medium is incorporated which facilitates the formability of the composite sheets. This method is especially useful for materials that have poor formability at room temperature. The benefits of using controlled heat include the reduction of formation forces applied to the plate, improved accuracy due to the reduction of elastic recovery, and the manipulation of the samples remarkably close to the glass transition temperatures. Through this experimental study with the variables analysed, a maximum shaping depth of 310 mm is obtained. These results confirm that the single point shaping used with bioplastic materials is possible and has positive outcomes for incremental forming.","PeriodicalId":49472,"journal":{"name":"Strojniski Vestnik-Journal of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85627411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10