| Subject name (in Hungarian, in English) | Basics of thermomechanics | |||
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Fundamentals of thermomechanics
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| Neptun code | BMEGEMMBXTE | |||
| Type | study unit with contact hours | |||
| Course types and number of hours (weekly / semester) | course type: | lecture (theory) | exercise | laboratory excercise |
| number of hours (weekly): | 1 | 0 | 1 | |
| nature (connected / stand-alone): | - | - | coupled | |
| Type of assessments (quality evaluation) | mid-term grade | |||
| ECTS | 3 | |||
| Subject coordinator | name: | Dr. Hénap Gábor | ||
| post: | adjunct | |||
| contact: | henapg@mm.bme.hu | |||
| Host organization | Department of Applied Mechanics | |||
| http://www.mm.bme.hu | ||||
| Course homepage | http://www.mm.bme.hu/targyak/?BMEGEMMBXTE | |||
| Course language | hungarian, english | |||
| Primary curriculum type | mandatory elective | |||
| Direct prerequisites | Strong prerequisite | BMEGEMMBXVE | ||
| Weak prerequisite | ||||
| Parallel prerequisite | ||||
| Milestone prerequisite | at least obtained 0 ECTS | |||
| Excluding condition | none | |||
Aim
The aim of the course is to introduce the students to the following concepts and methods of thermomechanics: Temperature dependence of elastic material properties. Basic equations of temomechanics. Determination of thermal stresses in drawn / pressed bars. Determination of thermal stresses in a bent support with a bar and plane model. Thick-walled pipe loaded with thermal and external / internal pressure. Solid shaft, fast rotating disc, shrink bond thermal stress analysis. Modeling and thermomechanical investigation of microelectromechanical devices (MEMS).
Learning outcomes
Competences that can be acquired by completing the course
Knowledge
Knows the commonly used conceptual system of thermomechanics; Knows the basic equations of thermal elasticity, the quantities in them and their definition; Understands methods for calculating thermal stresses when using rod models; Understands methods for calculating thermal stresses when using plane and axisymmetric models; Understands methods for calculating thermal stresses when using spatial models; Understands the methods of calculating thermal stresses in the case of rotating disk and shrink bonding; Informed about the numerical means of performing a thermal stress calculation; He is aware of the basic mathematical foundations of finite element thermomechanical analysis; He is aware of the possibilities of analytical and numerical treatment of thermomechanical problems; Determines the parameters of the model that is most appropriate for dealing with a given problem.
Ability
Able to describe elements of real mechanical structures exposed to thermal loads with simple thermally flexible models; Able to apply the basic equations of thermal elasticity, solve them for simpler models; Manages numerical software for thermal voltage calculation; Use the finite element method for stationary thermal stress calculation with rod model; Use the finite element method to calculate stationary thermal stress in a plane model; Use the finite element method to calculate a stationary thermal stress with a spatial model; Interpret the thermal boundary conditions of the model in the form most appropriate to the real system; Interpret the mechanical boundary conditions of the model in the form most appropriate to the real system; Capable of testing and inspecting the strength of pressure-bearing, thick-walled vessels, taking into account thermal effects; It differentiates between each plane model in terms of applicability.
Attitude
Collaborates with the instructor and fellow students in expanding knowledge, receptive to teamwork; It expands its knowledge by continuously acquiring knowledge, supplementing the parts of the material described in the lessons; Seeks to know and use the tools needed to solve the thermomechanical problem; In all cases, it strives for a clear, accurate and error-free solution; Open to the use of information technology and computing tools in task solutions.
Independence and responsibility
Independently evaluates the sizing problems that arise in terms of creating a sufficiently accurate model; According to the available professional resources and his / her own knowledge, he / she independently performs the tasks related to the topic of thermal elasticity with simple models; Accepts well-founded critical remarks for its development; In some situations, as part of a team, you work with your fellow students to solve tasks; It compares solution methods relevant to the task.
Teaching methodology
The theoretical part of the education takes the form of a lecture in 1 hour per week. Outline of the lectures is available in the form of a note uploaded to the subject's website. During the presentation, it is possible to make a note based on the material written on the board or given orally. The understanding of the written material and explanations is aided by projected samples and animations. The 1 weekly laboratory practice consists of solving independent tasks, which help to apply the acquired knowledge in practice in accordance with the theoretical material. We provide regular consultations during the semester.
Support materials
Textbook
JL: Nowinski: Theory of thermoelasticity with applications. Sijthoff & Noordhoff Int. Publ., 1978, ISBN 978-94-009-9931-2. 2021.
A. Boley, JH Weiner: Theory of thermal stresses. John Wiley & Sons, New York, 1960., ISBN 978-0486695792. 2021.
Lecture notes
Online material
Validity of the course description
| Start of validity: | 2021. August 1. |
| End of validity: | 2026. June 30. |
General rules
3.2 Learning outcomes are assessed on the basis of mid-year written performance measurements (partial and summary assessment of academic performance). Summarizing academic performance evaluation: a complex, written way of evaluating the competence-type competence elements of the subject and knowledge in the form of an indoor dissertation, the dissertation focuses on the application of the acquired knowledge, thus focusing on problem recognition and solution, ie practical (computational) tasks need to be solved, on the other hand, it requires the necessary lexical knowledge to be taken into account in performance appraisal. In addition, the dissertation may contain theoretical questions. Partial performance assessment (homework): a complex way of evaluating the knowledge, ability, attitude, as well as independence and responsibility type competence elements of the subject, the form of which is the individual homework.
Assessment methods
Detailed description of mid-term assessments
| Mid-term assessment No. 1 | ||
| Type: | summative assessment | |
| Number: | 2 | |
| Purpose, description: | The complex, written method of assessment of the subject and knowledge, ability-type competence elements in the form of in-house dissertations focuses on the acquired knowledge and its application, so in addition to theoretical questions, practical (calculation) tasks must be solved during performance evaluation. determined by the lecturer of the subject, the available working time is 45-45 minutes; | |
| Mid-term assessment No. 2 | ||
| Type: | formative assessment, simple | |
| Number: | 1 | |
| Purpose, description: | The complex way of evaluating the competence elements of subject knowledge, ability, attitude, as well as independence and responsibility, the form of which is the homework prepared individually or in groups, the content of the homework, the requirements, the deadline for submission -define it. The complex way of evaluating the competence elements of subject knowledge, ability, attitude, as well as independence and responsibility, the form of which is the homework prepared individually or in groups, the content of the homework, the requirements, the deadline for submission -define it. | |
Detailed description of assessments performed during the examination period
The subject does not include assessment during the examination period.
The weight of mid-term assessments in signing or in final grading
| ID | Proportion |
|---|---|
| Mid-term assessment No. 1 | 80 % |
| Mid-term assessment No. 2 | 20 % |
The weight of partial exams in grade
There is no exam belongs to the subject.
Determination of the grade
| Grade | ECTS | The grade expressed in percents |
|---|---|---|
| very good (5) | Excellent [A] | above 90 % |
| very good (5) | Very Good [B] | 85 % - 90 % |
| good (4) | Good [C] | 70 % - 85 % |
| satisfactory (3) | Satisfactory [D] | 55 % - 70 % |
| sufficient (2) | Pass [E] | 40 % - 55 % |
| insufficient (1) | Fail [F] | below 40 % |
The lower limit specified for each grade already belongs to that grade.
Attendance and participation requirements
Must be present at at least 70% (rounded down) of lectures.
At least 70% of laboratory practices (rounded down) must be actively attended.
Special rules for improving, retaken and replacement
The special rules for improving, retaken and replacement shall be interpreted and applied in conjunction with the general rules of the CoS (TVSZ).
| Need mid-term assessment to invidually complete? | ||
| yes | ||
| Can the submitted and accepted partial performance assessments be resubmitted until the end of the replacement period in order to achieve better results? | ||
| NO | ||
| The way of retaking or improving a summary assessment for the first time: | ||
| each summative assessment can be retaken or improved | ||
| Is the retaking-improving of a summary assessment allowed, and if so, than which form: | ||
| retake or grade-improving exam possible for each assesment separately | ||
| Taking into account the previous result in case of improvement, retaken-improvement: | ||
| new result overrides previous result | ||
| The way of retaking or improving a partial assessment for the first time: | ||
| partial assesment(s) in this group can be improved or repeated once up to the end of the repeat period | ||
| Completion of unfinished laboratory exercises: | ||
| missed laboratory practices must be performed in the teaching term at pre-arranged appointment | ||
| Repetition of laboratory exercises that performed incorrectly (eg.: mistake in documentation) | ||
| incorrectly performed laboratory practice (e.g. Incomplete/incorrect report) can be corrected by repeating the practice | ||
Study work required to complete the course
| Activity | hours / semester |
|---|---|
| participation in contact classes | 28 |
| preparation for laboratory practices | 14 |
| preparation for summary assessments | 32 |
| elaboration of a partial assessment task | 4 |
| additional time required to complete the subject | 14 |
| altogether | 92 |
Validity of subject requirements
| Start of validity: | 2021. August 1. |
| End of validity: | 2026. June 30. |
Primary course
The primary (main) course of the subject in which it is advertised and to which the competencies are related:
Mechanical engineering
Link to the purpose and (special) compensations of the Regulation KKK
This course aims to improve the following competencies defined in the Regulation KKK:
Knowledge
- Student is familiar with the general and specific mathematical, scientific and social principles, rules, contexts and procedures needed to operate in the field of engineering.
Ability
- Student has the ability to apply the general and specific mathematical, scientific and social principles, rules, relationships and procedures acquired in solving problems in the field of engineering.
Attitude
- Student is open and receptive to learning, embracing and authentically communicating professional, technological development and innovation in engineering.
Independence and responsibility
- Student shares her acquired knowledge and experience through formal, non-formal and informal information transfer with those in her field.
Prerequisites for completing the course
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Knowledge type competencies
(a set of prior knowledge, the existence of which is not obligatory, but greatly facilitates the successful completion of the subject) |
none |
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Ability type competencies
(a set of prior abilities and skills, the existence of which is not obligatory, but greatly contributes to the successful completion of the subject) |
none |