bluuebunny/crossref_metadata_2025_split huggingface dataset:
Testing functional features of V-belt transmissions
Authors: Krawiec P , Pajtášová M , Meler F , Warguła Ł 
Published: April 2020

Abstract
The development of belt transmissions with wedge belts and new materials used to produce belts inspire designers and people who deal with the exploitation of belt drives to carry research on the possibilities of increasing the load and durability of the belts. It is necessary to know the actual mechanical and rheological characteristics of the belts in the range of their durability features and to comply with the conditions of proper transmission work. It is possible to find in literature many information referring to classic, single rubber belts. In case of polyurethane heat-sealed belts obtaining such information is not easy. It has been a starting point to carry out experimental research in order to determine the material characteristics of belt PU 75 A (red colour). The article presents experimental research results on creeping, cyclical squeezing and stretching of the belt; also the subjection of a side-slip and transmission efficiency in the torque function for PU 75 A belt was determined. The research results will be used to create a transmission model in Abaqus Explicit programme.
Analysis of the size of shredded particles in a multi-disc grinder
Authors: Śmigielski G , Tyszczuk K , Mroziński A 
Published: April 2020

Abstract
The result of a shredding process should be a product of specific dimensions obtained with the consumption of the minimum amount of energy per unit of weight. There are several parameters that affect the efficiency and quality of the shredding process (including temperature and rotational speed). The article presents the station of a multi-disk grinder whose design is based on a computer with a control and measurement application developed in the LabVIEW environment, a CMOS camera, and a multi-functional DAQ device. The station makes it possible to look for optimum settings of the control system in order to obtain an appropriate particle size. The size of the shredded particles is justified by the requirements of the downstream process: extrusion in the case of plastics and digestibility in the case of biological materials.
Complex designing of granulation units with application of computer and software modeling: case “Vortex granulator”
Authors: Artyukhov A , Artyukhova N , Krmela J , Krmelová V 
Published: April 2020

Abstract
The article is devoted to the description of the complex method to design granulation unit, which is based on the joint use of the computer modeling results on the simulation models and software modeling based on author’s software products. The description of the software package Granulation Unit© to carrying out the structural and technological calculations for the granulation unit is given. The role of computer and software modeling in the general design algorithm of the granulation unit is shown. The optimization criteria are selected and an algorithm of design optimization for granulation unit is described using the example of the “Vortex Granulator” case. A general method of granulation unit designing “turnkey” with the use of automated design elements is presented. The results of automated calculations form the base to design an industrial granulation unit for the porous ammonium nitrate production. On the example of a specific product of the granulation unit (porous ammonium nitrate), the author’s software product is presented to determine the quality of the porous surface in the granule. This approach in modeling allows to create the automated systems for the optimization calculation of granulation equipment.
Analysis of angular deflection of bearing node in machine with toothed transport belt
Authors: Berdychowski M , Malujda I , Wałęsa K , Fierek A 
Published: April 2020

Abstract
The available CAE solutions are a significant assistance when carrying out engineering works. They facilitate conceptual design, design and carrying out strength calculations. These tools are very popular because of the simplicity of use and the ability to obtain quite accurate distributions of structural stress and strain. Unfortunately, when designing shafts the rotation angle values on supports are equally important. The present article draws attention to the essential problem of the misalignment of roller bearing assemblies caused, among others, by exceeded allowable angles of rotation. The article furthermore presents the results of the analysis which aimed to determine the influence of selected geometrical characteristics of the shaft as well as the bearing span on the value of the shaft angle of rotation at the supports.
Possibilities of modelling the bolts in program ANSYS
Authors: Bocko J , Lengvarský P , Huňady R 
Published: April 2020

Abstract
In this paper, the techniques of modelling bolts in program ANSYS are investigated. Several types of the bolt models are proposed and compared. The finite element models with solid bolt with and without thread, and no-solid model. The pretension effect is applied for all types of bolts. Different types of connections and finite elements are used for modelling. In addition, the assembled mechanical structure is loaded by pretension effect and the field of stress and displacement of points around holes for bolts are investigated. Moreover, the stresses in the bolts computed by three-dimensional finite elements are investigated.
Preliminary research of strength of glued connections of plastic elements
Authors: Fierek A , Malujda I , Wilczyński D , Wałęsa K 
Published: April 2020

Abstract
This paper presents the preliminary research of peel test of the adhesive bonding for materials using on parts of seating for public transport vehicles. Researches are focused on cooperation with the industry and their validity is conditioned by the need to automate the process of adhesive coat application. For the purpose of the experiment, two of the three materials composing the seat were selected: polyamide PA6 and polyurethane foam. Tensile strength tests were performed on polyurethane foam treated as the weakest component. At the further stage of the work, two adhesives were selected to for bond strength test. The first one was the adhesive used in the production of seats, the second one was selected on the basis of literature review. In both cases, adhesive was applied by spraying. Thus the bond strength was tested with the peel test as per EN 28510. The type of failure was also determined and the results are compared. Based on the obtained results, specific conclusions have been drawn to guide further research.
Analysis of shaft selection in terms of stiffness and mass
Authors: Fierek A , Malujda I , Wilczyński D , Wałęsa K 
Published: April 2020

Abstract
The currently available computer aided design tools significantly accelerate the design process. They enable creation of 3D structures and elements and allow checking their strength or other properties with the use of the different analytical and simulation modules. Selection of appropriate elements in terms of strength and cost is important for any engineering project. The above-mentioned tools for designing and performing analyses were used to select an appropriate shaft to drive the toothed belt. Analyses were needed to verify the designed shaft length and mounting method. The tested shaft was 1200 mm long, supported at one end. Shafts with different geometries, i.e. solid and hollow with different diameters were selected, taking into the consideration the design assumptions. The weight and rigidity of the system were considered relevant and were investigated. The paper presents the input parameters of the analysis and the simulation outputs. These are compared with the results of analytical calculations. The research outputs include the conclusion that while offering a higher rigidity, hollow shafts involve mounting design challenges.
Preliminary analysis of the sensitivity of the algebraic dry ice agglomeration model using multi-channel dies to change their geometrical parameters
Authors: Górecki J 
Published: April 2020

Abstract
The article presents the results of a preliminary analysis of the algebraic sensitivity of the model describing the change in the limit values of densification stress in the process of dry ice agglomeration using multi-channel dies in the piston technique. In the available literature, it was noted that the limit value of compaction stresses significantly exceeds the effective value. This justifies the sense of undertaking work on the development of a multi-channel die that allows the reduction of the value of the indicated stress, which will reduce the consumption of electricity necessary for the production of dry ice pellets. The sensitivity analysis performed is related to the attempt to determine the significance of the impact of individual geometric parameters of the multi-channel die on the value of the limit stress. The results will significantly contribute to the development of a work program related to the optimization of geometrical parameters of the tools used to implement the indicated process.
Construction design and structural analyse of transfer system
Authors: Jakubovičová L , Kopas P , Handrik M , Vaško M , Grega R , Šulka P 
Published: April 2020

Abstract
Modern transfer system device is used in industrial automatization and it ensures a smooth transfer of material along the tracks. The transfer system model was created in CAD system. Finite-element and modal analysis was created in Ansys Workbench software. The system consists of aluminium profiles from Bosh Rexroth firm, and it contains electric, pneumatic and control elements.
Design problems of axisymmetric connections in the aspect of machine engineering drawings
Authors: Kołodziej A , Dudziak M , Talaśka K 
Published: April 2020

Abstract
Axisymmetric connections are often employed in machine building. They can be used as static and movable connections. The final geometric form of elements comprising the axisymmetric connection is heavily dependent on the guidelines provided in the engineering drawing as well as the metrological process carried out as part of manufacturing. The denotation to maintain correct deviation within the framework of selected shape faults appears to be inaccurate. Companies manufacturing such components may control their measuring strategy to avoid a large number of rejected items. In the paper the influence of selected shape faults on coupling parameters within the axisymmetric connection as well as the effect of selected measurement strategy on the results of measurement of specific dimensions are presented. Furthermore, in the paper the guidelines for correct notation in the technical documentation to avoid ambiguity in interpretation have been defined.
Simulation of the impact bar top layer tensile test applying the Finite Elements Method
Authors: Marasová D , Ambriško Ľ , Caban Ľ , Semrád K 
Published: April 2020

Abstract
Impact bars represent the main structural components of impact idlers which are used to absorb the impact of the transported material at chutes in belt conveyance systems. An impact bar is a composite comprising three basic structural parts. The top part consists of a polyethylene or polyurethane layer; the middle part is flexible rubber absorbing the dynamic impacts of the falling material; and the lower part is formed from the steel carrying profile. Mathematical modelling of the belt conveyance elements is one of the methods of obtaining relevant results regarding their dynamic load when being impacted by the falling material. The tensile test simulation, performed applying the Finite Element Method, was performed using the Abaqus 6.14 software. On the basis of the true laboratory experimental test, the tension diagram was created and subsequently used as the input for the mathematical model. For the purpose of examination of the plastic behaviour in the Abaqus environment, the logarithmic strain was used and the plastic load zone was demarcated. The elastic zone of relative deformation was determined by the modulus of elasticity. The present article contains the graphical interpretation of the separation of reversible and permanent relative deformations, model geometry, defined material characteristics and boundary conditions, as well as analysis results. The outcome is a high degree of concordance of the results of the laboratory experimental test and the results of the FEM analysis in terms of relative elongation at the breaking point and stress at the breaking point of the tested specimen of the impact bar top layer. The max. difference in the plastic deformation doesn’t exceed 10 %.
Sensitivity study of spindle assembly used for thermal displacement reduction
Authors: Marek V , Hudec Z 
Published: April 2020

Abstract
The article is focused on the thermal behaviour of a spindle of a milling centre. This is a typical problem of high precision machines, which produce heat as a negative implication of production activity. Thermal loading influents productivity and precision of milling centre. Thermal transfer simulations, computed fluid dynamic solutions and finite element methods in general are vital sources of information about behaviour of machine parts influenced by heat loading. Reduction of thermal displacement is a crucial task. The sensitivity study, based on a complex case study, is able to identify features with significant influence on overall deformation. Complex case consists of detail subcase analysis. Identified parts require modifications to decrease of deformations. Results are compared with new productive computation method based on macro-models. Combination of these methods defines productive methodology which leads to fast prediction and accurate simulation.
Evaluate of time delays influence on effectiveness of nonlinear saturation controller. Part II: Numerical results
Authors: Mitura A , Rusinek R 
Published: April 2020

Abstract
In this paper selected results of numerical calculations are presented. For the beam model with delayed saturation controller the values of two indicators were determined. Firstly, the effect of time delays on the beam vibration level is determined. Next, numerical calculations describing an impact of delays on the kind of beam motion are performed. Quantitative and qualitative analysis of saturation controller effectiveness is also done.
Analysis and structuring diagnostic large volume data of technical condition of complex equipment in transport
Authors: Vychuzhanin V V , Rudnichenko N R , Sagova Z , Smieszek M , Cherniavskyi V V , Golovan A I , Volodarets M V 
Published: April 2020

Abstract
The paper presents the results of the classification analysis model for structuring of processed large volumes of heterogeneous diagnostic data about the technical state of complex equipment in transport development and research. Concept for the description and structuring of big data is proposed based on the formation of a metadata scheme using logical breakdown of all technical diagnostic data on the output variable - the technical condition of complex technical equipment in transport. A functional assessment of the technical condition complex technical system’s elements in transport is developed based on the application of methods for assessing structural and functional risks of failures. The article presents the results of assessing the accuracy of the input data sets classification using created decision trees models to effectively structuring and presenting the data in order to ensure that the procedures for their further analysis are performed. As a result of using the developed simulation model of structuring and presenting large heterogeneous diagnostic data volumes about the state of complex technical equipment in transport the time costs were reduced and the efficiency of analytical operations to study data for solving diagnostic problems and predicting complex system’s technical condition was improved.
Generating the cloud of points from the phase images
Authors: Stalmach O , Stalmachova K , Barnik F , Pobijak J 
Published: April 2020

Abstract
This article deals with the generating the cloud of points from the phase images. These phase images are similar to phase images which are generated during non-destructive testing using an infrared camera. In the first step the model of sample with the defects is created in the CAD software. Next the lock-in method is applied to the results from the numerical thermal FEM analysis and the phase images are created in the software MATLAB. Phase image representing the 2D image of the material at a certain depth under the surface of the model. From these phase images the coordinates of the cloud of points are generated in the MATLAB.
Simulation of rifled tubes drawing process
Authors: Šuťák D , Zajac J , Hatala M , Botko F , Čižmár P , Bittner A , Beták P 
Published: April 2020

Abstract
Presented paper is focused on knowledge in the field of tube drawing process. The introduction consists of summarizing the current state of the art. In the material and methods section, it is a characteristic of the usability of rifled tubes for heat exchangers, which serve to better heat exchange between the medium and the tube. The following section describes the implementation of the experiment. This section shows the principle of pipe drawing using a grooved mandrel and a die. The result section is showing resulting a simulation of strength analyzes and the recorded values during the pulling tests. In conclusion, the aim of this paper is briefly explained, as well as the need to take into account the leading part of the mandrel, which may result in incorrect geometry and cavitation. In conclusion, the issue is mentioned, which is beneficial for science and research in the field of cold drawing of tubes. It is also about knowledge with internally shaped surface in energetic equipment.
Analysis of threaded connections under impact load
Authors: Talaśka K , Wojtkowiak D 
Published: April 2020

Abstract
Threaded connections are widely employed in machine construction as fasteners, most often under static loads, but can also occasionally come under impulse or impact load. The latter type of load is particularly dangerous for this type of components. The paper presents MES analysis of a threaded connection under impulse load. The analysis takes into account thread geometry and axial force load. The material for the connection elements was modeled as elastic material. The work presents 2D models usable for determining the stress on components under static load together with 3D models utilized for determining the state of stress in components under dynamic loads (impact, impulse).
The application of the Finite Element Method analysis in the process of designing the punching die for belt perforation
Authors: Wojtkowiak D , Talaśka K , Fierek A 
Published: April 2020

Abstract
The Finite Element Method (FEM) analysis has improved the process of designing modern machines, especially when the effective construction solution has to be found. In the paper authors have presented the application of this type of analysis based on the example of the construction of the punching die for belt perforation. For these machines the cooperation of the piercing punch and the die is crucial. Because of this, the analysis of the flexural rigidity of the head block and the punch plate provides useful information, which can be used to maintain proper alignment between the punch and the die during the perforation process. It may have a positive effect on the tool wear and the punching performance. Additionally, by using the topology optimization the mass of the punching die can be greatly reduced while maintaining enough rigidity. This effect is desired in automated machines for belt perforation, in which the punching die has to move with high velocities in order to create a designed pattern on the perforated belt with satisfying efficiency. In the presented research authors focused on determining the influence of the constructional parameters of the punching die on the deflection of the head-punch block. The obtained results and the presented methodology of performing the FEM analysis of such machines will help to improve their design process and find the effective construction solution.
Development and design of new mechanical forging presses
Authors: Zahalka M , Raz K 
Published: April 2020

Abstract
This article deals with the design of a new crank forging press. Forging press has to respond to higher number of customer requirements. Most of them can be divided into two categories – technological requirements and economic requirements. Technological requirements include forging of new materials which are less formable and forging of larger parts. Economic requirements are focused on dimension stability and the minimizing of the additional machining. The design of new machine must respond adequately to all requirements. Some requirements are in conflict. Several design changes are presented in the article. These changes are analyzed and their benefits described. Main design changes are focused on workspace, bearings and cranks. Virtual simulation of behaviour during forging process was used for the evaluation.
Vehicle collision simulation based on non-classic tire traces
Authors: Śledziński M , Lewandowski A 
Published: April 2020

Abstract
In traffic conditions, vehicle collisions often result in tire traces on the road, vehicles and humans. Tire traces on the road can have diverse characteristics. A non-classic form of such traces is the subject of the present analysis. The selected non-typical trace form is characterized by a segmental course with diverse geometric features. The goal of this work is a full analysis of the trace generation mechanism using modern simulation tools. In the paper, the influence of selected vehicle parameters and road surface characteristics on the trace form have been analyzed. Research results indicate the usefulness of PC-Crash software for analyzing road accidents, also in regards to non-typical tire traces.
Research on the compaction process of loose materials with use of helix technology
Authors: Berdychowski M , Wilczyński D , Wałęsa K , Górecki J 
Published: April 2020

Abstract
In present times, there is an emphasis on facilitating energy generation from renewable sources. The energy generated in this manner is considered green with low environmental impact. One of the sources of renewable energy is biomass. The term biomass refers to all kinds of natural (organic) materials like sawdust, which can be processed to generate energy. In practice, the majority of the biomass is processed before it can be utilized. This process usually entails compaction to form pellet or briquette. It calls for utilizing briquetting machines with sufficient efficiency. The article presents the results of experimental research on the process of sawdust compaction in a screw briquetting machine. During compaction, the values of moment on the screw were recorded. These data will be used in the design of more efficient briquetting machines.