Mathematical Simulation of Welding Processes

Major: Welding Technologies and Equipment
Code of subject: 7.131.05.M.013
Credits: 5.00
Department: Department of Oil and Gas Engineering and Welding
Lecturer: Ph.D., associate professor Dzyubyk A.R.
Semester: 2 семестр
Mode of study: денна
Мета вивчення дисципліни: The purpose of the course is to study and master the basics of mathematical modeling of thermal and thermomechanical processes during welding, calculation, experimental and calculation-experimental methods of determining temperature fields, stresses and deformations caused by welding processes.
Завдання: general competences: - the ability to learn, to perceive the acquired knowledge in the subject area and to integrate it with the already existing ones (SK 1); - the ability to produce new ideas, to show creativity, the ability to system thinking; the ability to search and analyze information from various sources (SK 4); - the ability to search and analyze information from various sources (LC 5); - The ability to conduct research at the appropriate level, to have research skills that are manifested in the ability to form new products in the chosen field, to choose the appropriate directions and appropriate methods for their implementation, taking into account the available resources (ZK 7); - the ability to conduct research at the appropriate level, to have research skills that are manifested in the ability to form new products in the chosen field, to choose appropriate directions and appropriate methods for their implementation, taking into account the available resources (ZK 6); - knowledge and understanding of the subject area and understanding of the profession (ZK 7); professional competences: - the ability to constantly supplement basic knowledge of fundamental sciences to the extent necessary for mastering modern general professional and professionally oriented disciplines (FC 2); - the ability to acquire and supplement basic knowledge about the content of the main regulatory and legal documents, reference materials, current standards and technical conditions, instructions and other regulatory documents in the field of mechanical engineering (FC 3); - the ability to carry out scientific research, evaluate the obtained results, check their adequacy, perform mathematical modeling of processes, tools, systems of welding and machine-building production using modern experimental technologies of scientific research, create theoretical models for researching the quality of products, technological processes , means, systems of machine-building production, use methods of analysis, synthesis and optimization of technological preparation of machine-building production, implement algorithmic and software support (FC 8); - the ability to solve problems of the mechanics of deformable bodies with cracks under the action of specified loads and temperature fields for real structural elements (FCS 1.3).
Learning outcomes: RN 1. Patterns of wear and destruction of parts; basics of mathematical modeling of failure processes of parts and machines; features of modern technological methods of increasing the durability and ensuring the reliability of products (ZN 6). RN 2. Methods and methods of mathematical modeling of processes in technological systems, welding and restoration processes, functioning of tools, equipment and equipment in the manufacture of products in mechanical engineering, construction of mathematical models, their analysis, evaluation and application to optimize technological support of production processes in the manufacture of products in mechanical engineering (ZN 10). RN 3. Make a justified choice of optimal parameters, make calculations when designing technological equipment for welding production and related processes at enterprises of various directions (UM 8). PH 4 Synthesize models for research and optimization of product manufacturing technology, welding process design and technological equipment; to carry out by means of programming the selection of optimal parameters of technological processes of manufacturing and assembly, repair and restoration by welding of structures, structures, products; apply multifunctional CAD/CAM/CAE software products (UM 9). RN 5 Communication skills, including oral and written communication in Ukrainian and foreign languages (English) in business communication and presentation in professional publications (KOM 1) RN 6 The ability to use various methods, in particular modern information technologies, for effective communication at the professional and social levels of KOM 2) RN 7 Ability to adapt to new situations and make appropriate decisions; to be aware of the need for lifelong learning in order to deepen acquired and acquire new professional knowledge (AiV 1).
Required prior and related subjects: - Production project management - Fracture mechanics of steel structures - Engineering surface
Summary of the subject: Mathematical and computational models of welding. The working body. Sources of heat. Mathematical model of action instant heat sources, continuous sources, mobile sources of constant power when heated with fast and powerful heat sources. Mathematical modeling of processes when welding dissimilar metals. Mathematical modeling of processes in the case of plasma cutting. Mathematical modeling of processes in the case of friction welding. Mathematical modeling of processes in the case of heating gas burner and local heat treatment of welded joints in the case of many passing welding. Mathematical modeling of processes in the case of welding - soldering. Mathematical modeling of processes in the case gas-heated, in the case of the processes associated with phase transitions. Simulation of residual stresses in thin plates with straight and circular seams. Mathematical modeling using settlement-experimental method for determining residual welding stresses. Formulation of inverse problems and methods of their solution.
Опис: 1. Mathematical and calculation models for welding. Working bodies. Heat sources. Mathematical models of the action of instantaneous heat sources, continuous sources, moving sources of constant power, when heated by powerful fast-moving heat sources. 2. Mathematical modeling of processes in the case of welding dissimilar metals. 3. Mathematical modeling of processes in the case of plasma cutting of metals. 4. Mathematical modeling of processes in the case of friction welding. 5. Mathematical modeling of processes in the case of heating with a gas burner and local heat treatment of welded joints in the case of multi-pass welding. 6. Mathematical modeling of processes in the case of welding - soldering. 7. Mathematical modeling of processes in the case of gas-thermal sputtering and in the case of processes associated with phase transitions. 8. Modeling of residual stresses in thin plates with straight and circular butt joints. Mathematical modeling using the calculation-experimental method of determining residual welding stresses. Formulation of inverse problems and methods of their solution.
Assessment methods and criteria: 1. Defense of individual points of the control work in oral form by interviewing the theoretical material on the topic of the work and the method of conducting calculations. 2. Conducting the current express - control by means of a virtual learning environment or tests, oral survey, assessment of activity and submitted proposals.
Критерії оцінювання результатів навчання: Current express control (70%) of control work (30%)
Порядок та критерії виставляння балів та оцінок: 100–88 points – (“excellent”) is awarded for a high level of knowledge (some inaccuracies are allowed) of the educational material of the component contained in the main and additional recommended literary sources, the ability to analyze the phenomena being studied in their interrelationship and development, clearly, succinctly, logically, consistently answer the questions, the ability to apply theoretical provisions when solving practical problems; 87–71 points – (“good”) is awarded for a generally correct understanding of the educational material of the component, including calculations, reasoned answers to the questions posed, which, however, contain certain (insignificant) shortcomings, for the ability to apply theoretical provisions when solving practical tasks; 70 – 50 points – (“satisfactory”) awarded for weak knowledge of the component’s educational material, inaccurate or poorly reasoned answers, with a violation of the sequence of presentation, for weak application of theoretical provisions when solving practical problems; 49-26 points - ("not certified" with the possibility of retaking the semester control) is awarded for ignorance of a significant part of the educational material of the component, significant errors in answering questions, inability to apply theoretical provisions when solving practical problems; 25-00 points - ("unsatisfactory" with mandatory re-study) is awarded for ignorance of a significant part of the educational material of the component, significant errors in answering questions, inability to navigate when solving practical problems, ignorance of the main fundamental provisions.
Recommended books: 1. Kiryan V. I., V. A. Osadchuk, M. M. Nikolishin Fracture mechanics of welded joints of metal structures: lions : Spolom, 2007. — 320 p. 2. Strutinsky V. B. Mathematical modeling of processes and systems mechanics: Textbook — Zhitomir: ZHITI, 2001. — 612 p. 3. Kushnir R. M., Nikolishin M. M., Osadchuk V. A. Elastic and elastic-plastic ultimate state of shells with defects: lions:-tvo "SPOLOM", 2003. — 320 p. 4. Kuzmenko A. G. the Methods of calculations and tests for wear and reliability: Khmelnitsky: BLUNT, 2002. – 151p. 5. A. V. Vasylyk, Dragomiretsciy J. M., Kril J. A. Thermal analysis in welding. – Ivano-Frankivsk : Fakel, 2004. – 209 p.
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