Topic outline

  • Assignments

    The course follows Problem-Based-Learning concepts. Each week includes a group assignment which supports the overall analysis of large thin-walled structures. The assignment is complemented by lectures on the topic. Every week on Thursdays, each group has a separate Zoom session with the instructor, where the students can ask any questions related to their project. The lectures and assignments are given for the first 5 weeks of the course, followed by a 6th extra week dedicated for a summary report on course assignments 1-5. The 7th week is for the exam. 

    The assignment reports (max 6 pages of text, total max length of about 10 pages with figures and tables + unlimited appendixes) are returned to the instructor anssi.karttunen@aalto.fi. In general, an assignment report should include: 

     1) Introduction to the weekly assignment with review of relevant literature (books, scientific and technical articles), 

    2) Methods used to solve the assignment including their strengths and limitations, 

    3) Main Results including a critical review of their quality, 

    4) Discussion, related sub-questions and next steps as group and as individuals. Discuss the lessons learned from the assignment and reflect on the lecture slides and some of the articles available on the course page (MyCourses). 

    5) The Roles and time allocation of the group members in table format (lectures, assignment, self study of literature, meetings). 

    A template of the report is given in the For Aalto users section in MyCourses.

    The assignments are:

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    Group assignment 1.

    Given: 7.9.2020

    Due: 14.9.2020, 09:00

    The idea of the first assignment is to introduce you to the modelling of thin-walled structures. You need to create a structural model for a stiffened panel bending problem of your choice using Finite Element software such as FEMAP, Abaqus, Ansys or Comsol (which is available at https://download.aalto.fi/student/). You need solve the panel problem and interpret the results. In the report that follows the outline 1)-5) given above, you need to:

    Describe the model: geometry of the structure, material model, finite elements used (e.g. beams, shells, solids), boundary conditions, loads (e.g. uniform pressure) and other relevant information. 

    Include modifications to the model: for example, mesh size variation to check for numerical accuracy and an opening ("hole") to the panel to alter its physical behavior.

    Give details to the extent that the person reading your report could repeat what you have done. That is to say, on the basis of your report, the instructor should be able to build an FE model and get the same results.

    Hint: In the technical literature (books, articles) you can find many problems for which you can build your own finite element model to solve the problem. The literature problems come with analytical reference solutions with which your finite element model should be in good agreement.

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    Group assignment 2. 

    Given: 14.9.2020

    Due: 21.9.2020 08:00

    See Lecture 3.pdf in the For Aalto users section.

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    Group assignment 3. 

    Given: 21.9.2020

    Due: 30.9.2020 08:00

    See Lecture 5.pdf in the For Aalto users section.

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    Group Assignment 4. 

    Given: 30.9.2020

    Due: 7.10.2020 08:00

    See Lecture 8.pdf in the For Aalto users section.

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    Group Assignment 5. 

    Given: 7.10.2020

    Due: 16.10.2020 08:00

    See Lecture 10.pdf in the For Aalto users section.

     


     

     


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