Numerical simulation of a temperature field during multi-beads surface welding

Konar, Radoslav; Mičian, Miloš; Málek, Miloslav; Šutka, Jozef; Gucwa, Marek; Winczek, Jerzy

doi:10.17512/jamcm.2021.1.05

Cited by 3 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Verifications of the structure are performed at the most adverse effects of loads on the structure [7]. Welding is used to join many components of the structure [8]. The fatigue calculation for amusement devices assumes 35 000 operating hours without considering the time of boarding and disembarking passengers.…”

Section: Proposed Amusement Ridementioning

confidence: 99%

Analysis of Normative Requirements and Technical Specifications of a Structural Design of the Mechanical Device Operating in the Amusement Industry

Molnár,

Blatnický,

Dižo

et al. 2024

Acta Tech. Jaurinensis

View full text Add to dashboard Cite

In current hectic times, people should be able to slow down and diversify their free time. Therefore, the contribution of the amusement industry should not be negligible but, on the contrary, should be seen as something where whole families can seek respite from ordinary worries and problems. For this reason, the presented paper was written, which represents an intermediate step in the design of an amusement facility suitable for amusement parks that respects the normative requirements. Technical standardization represents a set of rules, characterizations, guidelines, and results of activities necessary for mutual understanding when solving technical problems in production. Adherence to standards is essential when launching a product on the market. The main standard indicating the full functioning of an amusement device is STN EN 13814. Its analysis and the resulting technical specifications of the proposed equipment are the chief objectives of the paper.

show abstract

Section: Proposed Amusement Ridementioning

confidence: 99%

Analysis of Normative Requirements and Technical Specifications of a Structural Design of the Mechanical Device Operating in the Amusement Industry

Molnár,

Blatnický,

Dižo

et al. 2024

Acta Tech. Jaurinensis

View full text Add to dashboard Cite

show abstract

“…Important factors affecting the type of structures formed are the temperature and rate of heating and cooling, as well as the austenitizing temperature, among others. Taking into account the phase transformations can therefore lead to an optimization of the heat treatment process or the welding process of steel elements through an appropriate choice of the temperature change scheme [ 18 , 19 , 20 ]. Thus, diagrams that take these factors into account store strongly nonlinear data, which is a challenge for the users analyzing them or the algorithms using them.…”

Section: Introductionmentioning

confidence: 99%

Algorithm for Determining Time Series of Phase Transformations in the Solid State Using Long-Short-Term Memory Neural Network

Wróbel

Kulawik

2022

Materials

View full text Add to dashboard Cite

In the numerical analysis of manufacturing processes of metal parts, many material properties depending on, for example, the temperature or stress state, must be taken into account. Often these data are dependent on the temperature changes over time. Strongly non-linear material property relationships are usually represented using diagrams. In numerical calculations, these diagrams are analyzed in order to take into account the coupling between the properties. An example of these types of material properties is the dependence of the kinetics of phase transformations in the solid state on the rate and history of temperature change. In literature, these data are visualized Continuous Heating Transformation (CHT) and Continuous Cooling Transformation (CCT) diagrams. Therefore, it can be concluded that time series analysis is important in numerical modeling. This analysis can also be performed using neural networks. This work presents a new approach to storing and analyzing the data contained in the discussed CCT diagrams. The application of Long-Short-Term Memory (LSTM) neural networks and their architecture to determine the correct values of phase fractions depending on the history of temperature change was analyzed. Moreover, an area of research was elements that determine what type of information should be stored by LSTM network coefficients, e.g., whether the network should store information about changes of single phase transformations, or whether it would be better to extract data from differences between several networks with similar architecture. The purpose of the studied network is strongly different from typical applications of artificial neural networks. The main goal of the network was to store information (even by overfitting the network) rather than some form of generalization that allows computation for unknown cases. Therefore, the authors primarily investigated in the ability of the layer-based LSTM network to store nonlinear time series data. The analyses presented in this paper are an extension of the issues presented in the paper entitled “Model of the Austenite Decomposition during Cooling of the Medium Carbon Steel Using LSTM Recurrent Neural Network”.

show abstract

“…Multiphase flows have been substituted by thermal effects of liquid metal transport, melting, solidifying and allotropic changes. Another approach that is applicable to the thermal analysis of GMAW hardfacing is depicted in [7]. The paper describes a simulation approach that is based on SysWeld Finite Element Method (FEM) simulation software.…”

Section: Introductionmentioning

confidence: 99%

Capturing the temperature gradients of GMAW hardfacing processes by employing CFD and FEM simulation procedures

Verdete

Ronțescu²,

Alexandru³

2022

MATEC Web Conf.

View full text Add to dashboard Cite

Hardfacing is carried out whenever a local improvement of the mechanical properties of metallic parts is demanded. In this regard, gas metal arc welding technology is one of the most popular choices. One decisive factor of the welded joint quality is governed by the heat affected zone. The present paper proposes a simulation methodology that can be employed for capturing the temperature gradients in any location of the base metal, when such information is required. The model was developed by using ANSYS Workbench simulation software and is based on coupled CFD and Transient Thermal analysis. In the first stage, a welded sample is subjected to 3D scanning for recreating its constitutive surfaces in a CAD environment. In the next stage, the convective heat transfer occurring due to the velocity of the shielding gas is captured by means of CFD analysis. Experimentally derived temperatures are employed for developing a transient thermal analysis, having defined the exterior heat transfer coefficient. In the last stage, the simulation results are verified in an arbitrary location of the base metal that is located outside the heat affected zone.

show abstract

Numerical simulation of a temperature field during multi-beads surface welding

Cited by 3 publications

References 21 publications

Analysis of Normative Requirements and Technical Specifications of a Structural Design of the Mechanical Device Operating in the Amusement Industry

Analysis of Normative Requirements and Technical Specifications of a Structural Design of the Mechanical Device Operating in the Amusement Industry

Algorithm for Determining Time Series of Phase Transformations in the Solid State Using Long-Short-Term Memory Neural Network

Capturing the temperature gradients of GMAW hardfacing processes by employing CFD and FEM simulation procedures

Contact Info

Product

Resources

About