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ictpmcs: 2nd international conference on thermal process modelling and computer simulation

The proceedings contain 93 papers. The topics discussed include: simulation of thermal processes: solutions studied in the automotive industry;oxide reduction and diffusion in Fe-Cr alloy honeycombs;motion of diffusional transformation fronts in multi-component systems;on the physical and mathematical interpretation of the isokinetic hypothesis;modelling of precipitation of carbides during tempering of martensite;modelling of retained austentite in carburized layers;modelling of phase transformations and hardening of carbonitrided steels;objective modeling of some elastoplastic materials with phase changes;and numerical simulation of welding stresses and distortions under consideration of temporal and local changes of strain rate.

关键词： process control

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Simulating Brick Production Through Discrete Event simulation as a Zero-Waste Initiative for Sustainability 2nd

Simulating Brick Production Through Discrete Event Simulatio...

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2nd international conference on Sustainability: Developments and Innovations, ICSDI 2024

作者： Abdul Majid, Mazlina Ahmad, Noormazlinah Abdullah, Aziman M. Noor, Mohazan Abdullah Sani, Syahnizam Faculty of Computing University Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia Faculty of Chemical & Process Engineering Technology University Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia Faculty of Computing University Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia FPG Oleochemicals Sdn Bhd Kuantan Port Industrial Area Pahang Kuantan26080 Malaysia Computer and IT Center Universiti Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia

ISBN: (纸本)9789819783472

The European Union defines waste as any object that is discarded, intended to be discarded, or required to be discarded, even though it might still have potential use. The quantity of waste generated is escalating daily, posing a significant concern globally. There is no single solution to curtail or prevent this escalation;however, sustainable practices such as reusing and recycling offer the most viable approach. Currently, numerous initiatives focus on recycling waste into diverse products, such as bricks. Notably, the chemical waste, known as sludge, from an Oleochemical industry in Malaysia has shown promising potential for recycling into bricks. Thus, this paper aims to simulate brick production based on industry sludge waste for an upscaling strategy utilizing the Discrete Event simulation technique. The Discrete Event simulation (DES) technique was selected due to its suitability for modelling business processes. The simulation process starts by modelling the actual process flow of brick production as a DES model using AnyLogic 6.0. Next, various test scenarios have been simulated to identify bottlenecks and constraints in brick production. The result analysis revealed that the daily consumption of sludge per unit of brick production significantly impacts the process. The quantity of sludge utilized per brick produced was relatively minimal compared to the daily sludge output by the industry. This discovery holds importance in preparing the industry for potential upscaling strategies, facilitating the achievement of the zero-waste target by 2030. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Brickmaking

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Experimental and numerical simulation of thermomechanlcal phenomena during a TIG welding process

Experimental and numerical simulation of thermomechanlcal ph...

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ictpmcs: 2nd international conference on thermal process modelling and computer simulation

作者： Depradeux, L. Jullien, J.-F. URGC Bât. JCA Coulomb INSA 20 avenue Albert Einstein 69621 Villeurbanne Cedex France

In this study, a parallel experimental and numerical simulation of phenomena that take place in the Heat Affected Zone during TIG welding on 316L stainless steel is presented. The aim of this study is to predict by numerical simulation residual stresses and distortions generated by the welding process. For the experiment, a very simple geometry with reduced dimensions is considered: the specimens are disks, made of 316L. The discs are heated in the central zone in order to reproduce thermo-mechanical cycles that take place in the HAZ during a TIG welding process. During and after thermal cycle, a large quantity of measurement is provided, and allows to compare the results of different numerical models used in the simulations. The comparative thermal and mechanical analysis allows to assess the general ability of the numerical models to describe the structural behavior. The importance of the heat input rate and material characteristics is also investigated. © EDP Sciences.

关键词： Welding

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Requirements for process redesign tools

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international JOURNAL OF computer APPLICATIONS IN TECHNOLOGY 1998年第6期11卷 409-417页

作者： Pandya, KV Nelis, S Univ Strathclyde Dept Design Manufacture & Engn Managment Glasgow G1 1XJ Lanark Scotland

Changing to a process based system offers many benefits, including increased competitiveness and reduced lead times [1]. An examination of the different types of software method available and the differences between them was undertaken. This paper gives the readers with an awareness of a need for Business process Reengineering (BPR), an overview of the various tools for implementing process redesign, available on the market today. Each method has its strengths and weaknesses, and therefore it is considered that no one software package as yet covers all the aspects of process redesign satisfactorily. The paper also identifies the characteristics of an ideal software package for process redesign. This tool concentrates on process identification, modelling and simulation.

关键词： BPR Kaizen modelling tools process modelling reengineering

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modelling the ferrite/carbide &rarr austenite transformation of hypoeutectoid and hypereutectoid steels

Modelling the ferrite/carbide &rarr austenite transformation...

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ictpmcs: 2nd international conference on thermal process modelling and computer simulation

作者： Surm, H. Kessler, O. Hunkel, M. Hoffmann, F. Mayr, P. Stiftung Institut für Werkstofftechnik Bremen Germany

In the project "Distortion compatible heating during heat treatment" of the Collaborative Research Center 570 "Distortion Engineering" the mechanisms of distortion development during heating are analyzed. The factors of the austenitizing process influencing distortion during heat treatment are investigated by experiments as well as by computer simulation. To predict distortion during heating with computer simulation, the ferrite + carbide into austenite transformation has to be modeled accurately. A model, based on the Johnson-Mehl-Avrami equation, was developed to describe the transformation of hypoeutectoid and hypereutectoid steels during continuous heating with constant heating rate. © EDP Sciences.

关键词： Austenitic transformations

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computer predictions of thermo-mechanlcal behavior and residual stresses in spray coating process

Computer predictions of thermo-mechanlcal behavior and resid...

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ictpmcs: 2nd international conference on thermal process modelling and computer simulation

作者： Ju, D.-Y. Ji, V. Gassot, H. Department of Materials Science and Engineering Saitama Institute of Technology Fusaiji 1690 Okabe Saitama 369-02 Japan LM3 ENSAM 15 boulevard de l'Hôpital 75013 Paris France Institut de Physique Nucléaire d'Orsay 91406 Orsay France

This paper presents a numerical method in order to forecast the thermo-mechanical behavior and the residual stresses in the thermal spray coating process by using high velocity oxygen fuel (HVOF). A set of coupled equations of the heat conduction and stress/strain and solidification based on the metallothermo-mechanical theory is introduced into the simulation of thermal spraying. Here, an inelastic constitutive equation with capacity to represent relation of stress/strain during rapid solidification is employed. The numerical modelling based on the finite element method is proposed to solve the heat conduction associated with solidification in the sprayed layer and residual stresses on the interface between multi-layer materials, especially. In this paper, the simulated results of the temperature field, solidified domain and residual stresses in the sprayed layer including interfacial combinations between substrate and spray layer are presented, and the validity of the calculated results is discussed in comparison with the measured results obtained by X-ray diffraction. © EDP Sciences.

关键词： Sprayed coatings

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modelling of retained austenite in carburized layers

Modelling of retained austenite in carburized layers

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ictpmcs: 2nd international conference on thermal process modelling and computer simulation

作者： Przylȩcka, M. Gȩstwa, W. Totten, G.E. Poznań University of Technology Poznań Poland G.E.Totten and Associates LLC Seattle WA United States

In this paper, modelling of the phase composition of the carburized case produced on steel alloys containing chromium, manganese and nickel will be discussed. In particular, the effect of steel composition on the amount of retained austenite and carbide structure will be discussed. These microstrucures were selected because they exhibit the greatest influence on the correlation between structure and properties of hardened carburized case. The thermal process largely influences the formation of carbides quantity of residual austenite in structure of hardened carburized elements. Properties evaluated include: hardness, micro-hardness, and impact resistance. The model can be applied to carburized 20H (20Cr4), 15HN (17CrNi6-6) and 16HG (16MNCr5) steel although data for 20H (20Cr4) steel is provided here. © EDP Sciences.

关键词： Austenite

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modelling of precipitation of carbides during tempering of martensite

Modelling of precipitation of carbides during tempering of m...

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2nd international conference on thermal process modelling and computer simulation

作者： Wang, Y Denis, S Appolaire, B Archambault, P Ecole Mines UHP INPL CNRS LSG2MUMR 7584 F-54042 Nancy France

No abstract available

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Numerical simulation of inertia friction welding process of GH4169 alloy

Numerical simulation of inertia friction welding process of ...

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ictpmcs: 2nd international conference on thermal process modelling and computer simulation

作者： Zhang, Liwen Liu, Chengdong Qi, Shaoan Yu, Yongsi Zhu, Wenhui Qu, Shen Wang, Jinghe Dalian University of Technology Materials Engineering Department China

Friction welding is a solid state welding technology with good quality and high automation. It has been widely used in many industry fields especially in automobile and aerospace industry. Because of the characters of less process parameters and high automation, inertia friction welding is popular in many fields. In this paper, a 2-D thermo-mechanical FEM model was developed to simulate inertia welding process. In this model, the temperature dependency of the thermal and mechanical properties of material was considered. The finite-element software *** was used to calculate the temperature field, stress field and strain field during inertia friction welding process. The transient temperature field and the deformation of GH4169 superalloy during inertia friction welding process were predicted. The temperature filed during inertia friction welding process was measured by means of thermocouples. The calculated temperature filed is in good agreement with the experimental result. © EDP Sciences.

关键词： Alloying elements

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Dynamic Modeling of a PEM Fuel Cell Stack thermal System

Dynamic Modeling of a PEM Fuel Cell Stack Thermal System

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2nd IEEE international conference on Advanced computer Control

作者： Deng, Li Deng, Xian-Rui Ma, Ning Wei, Ping Tangshan Teachers Coll Dept Comp Sci Tangshan Peoples R China China Univ Petr Dept Automat Control Beijing Peoples R China

ISBN: (纸本)9781424458479

A dynamic model for the thermal system of a PEM fuel cell stack is proposed in this paper. It is based on the theory of heat transfer and mass transfer. And it is intended to be used for system analysis and control. The model can not only predict the variables and states in steady case, it can also describe their transient process when the output current varies with load. Besides, it can give insight of the states of different parts of the fuel cell stack. The simulation results show the model is valid and useful.

关键词： PEM fuel cell stack modelling thermal system transient process

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