代做MAE 157 - Lightweight Structures Winter 2024代做Python语言
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Winter 2024
Course outline
1. Review of basic mechanics of materials: stress and strain, boundary value problem in elastostatics.
2. Review of basic structural mechanics: axial loading, torsion and bending of beams.
3. Bending, shear, and torsion of thin-walled beams.
4. Structural idealization.
5. Wing spars and box beams.
6. Fuselages, Wings, Fuselage frames and wing ribs.
7. Intro to the Finite Element Method
Textbook/Lecture Notes
No books are required for the course. Hand-written lecture notes will be provided.
Course Policies
Attendance
• Class attendance is highly encouraged, as low class attendance will affect your performance and ultimately your grade.
Tests
• There will be one midterm and one final exam. The date for the midterm will depend on how quickly we develop the contents in class, and will be communicated at least one week in advance. The target is early to mid February. The date and time for the final will be as established by the Registrar’s Office.
• Tests are closed book and notes. One letter-size page (filled on both sides) summary of relevant equa- tions and formulas (no solutions) is allowed during tests.
• Each test will cover material taught from the first day of class until the test date. You will be notified at least one week in advance if any of the test dates will change.
• Make-up tests will be scheduled only if a valid excuse for missing the test is given. Valid excuses are limited to health issues documented by a doctor’s note, or death in your immediate family. Oversleeping, or simply being late are not considered as admissible reasons. Missed tests will count as zero towards the final grade.
Homework
• Homework must be turned in on the due date, as specified in Canvas. Late homework will not be accepted.
• All work submitted must be done by you, and any help you get from your study group must be acknowledged.
• Mandatory homework and test format: The homework you turn in is a good measure of the quality of your work and the effort you put into a course. Make every effort to present your work in the best possible
manner:
1. PRINT your name clearly on the TOP RIGHT-HAND corner of each and every page. STAPLE all sheets together.
2. Be careful about neatness and being organized. Neatness counts, it is a sound approach to engineering.
3. Clearly indicate your final results.
4. Do not forget to keep track of UNITS during your calculations.
(a) It is a convenient way to uncover math errors.
(b) Please indicate units for your final answers: a final answer without units is not an answer. 5. Show your work and describe your solution process:
(a) Provide a sketch of the problem with all relevant information.
(b) Write relevant equations and discuss your approach to solving them.
(c) Respect notational conventions.
(d) Comment on the physical nature and significance of your answers.
• Points will be deducted if the format described above is not followed.
Grading
• The course is intended to be a gradual process and as such, both homework assignments, midterm, and final exam are very important. Their relative weight is:
Homework 30%
Midterm 30%
Final 40%
• Final grades will follow a grading scale and will not be curved:
Weighted average Final Grade
>85% A
70%-85% B
60%-69% C
50%-59% D
<50% F
• Note: +, regular, and - grades are evenly distributed within the corresponding bracket,e.g., A+ for > 95%, A between 90 and 95%, and A- between 85 and 90%.
• Questions regarding grades: please ask within one week after the homework/test is returned to you. Please do not ask for a grade increase at the end of the quarter!
Course Materials and Announcements
• Course material, homework and announcements will be posted on Canvas. It is your responsibility to check the course page regularly.