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Finite Element Analysis for Marine Structures

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  1. The Course

    Meet the Instructor
  2. Introduction to the Course
  3. Introduction to Elasticity and Resistance of Materials
    Introduction to Elasticity and Resistance of Materials
  4. Basic scantling of ships’ hulls
    Basic scantling of ships' hulls
  5. Introduction to the Finite Element Method (FEM)
    Introduction and history of the Finite Element Method (FEM)
  6. Basic concepts and element types
  7. Linear static problems in Finite Element Analysis (FEA): Discretization of the solution and shape functions
  8. Linear static problems in Finite Element Analysis (FEA): Strains, stresses and nodal forces
  9. Linear static problems in Finite Element Analysis (FEA): Stiffness matrix, boundary conditions, loading, and solution of the system
  10. Overview of a FEA code
  11. Introduction to a FEA software
    Software download, installation and validation
  12. General Preferences and GUI
  13. CAD: tools
  14. CAD: layers
  15. Geometry
    Geometry: import
  16. Geometry: repair
  17. Local axes
    Local axes: definition
  18. Local axes: applications
  19. Beams and shells
    Models with beams and shells
  20. Complete FE simple model: constraints
  21. Complete FE simple model: materials
  22. Complete FE simple model: loads
  23. Meshing of FEA models
    Meshing preferences, assigning different element types and changing elements' order
  24. Assigning element sizes and divisions: unstructured and structured meshes
  25. Analysis and post-processing of results
    Launching a simulation
  26. Post-processing procedures
  27. Case study
    Problem statement. CAD definition and preparation
  28. Boundary conditions and materials
  29. Loads
  30. Meshing
  31. Post process and reporting of results
  32. Regulations
    FEM Regulations
  33. Final Assignment
    Final Assignment
  34. Course Materials
    Course Materials (coming soon)
  35. Course Survey
    Course Evaluation Survey (coming soon)
  36. Summary
    Wrap-up

Hello everyone!

Now it’s time to briefly recap what we have been learning during the course.

If you recall, we reviewed the basic concepts of resistance and elasticity of materials applied to the specifics of structural analysis and which mechanical properties are relevant to our analysis.

We learned how to do a basic scantling of a ship with the ship beam model and the basic structural elements of a ship’s hull.

We also gained insight into the fundamentals of the finite element method. We dug into how finite element code is structured, how the data is input, how it is processed and the matrices are assembled, and how the results are processed after solving the system.

In the practical lessons, we learned how to install, validate, and start working with a finite element software. We also learned how to import CAD files and 3D models in different formats and how to prepare, repair, and clean those models to meet the topological requirements so that they could be meshed for finite element analysis.

We devoted a lesson to local axes to learn their importance and how they could be used, for example, for composite materials and for applying loads in different axes to apply different types of boundary conditions.

Also, we went through a beam and shell model, learning how to import, apply boundary conditions, apply loads, and assign materials. And we did some rough meshing and obtained some results.

Then, we went into more detail about the specifics of meshing. We learned how to choose the type of elements, the order of the element, and the type of mesh (unstructured or structured), and how we could combine that to refine the mesh and obtain the requested results.

We learned a bit about the different solvers used in the finite element softwares, and we calculated and obtained results. We went through a post-processing system, learned how to choose different results, how to visualize deformations, how to visualize different types of structures, and how to isolate different results to decide if the mesh needed to be refined in certain parts of the structure.

We did this refinement, and we obtained stable solutions that are finally the ones we can give as correct and include in our reports.

Remember that we did all this in a final model, a very large model of a complete planning motor boat, which will be in your final project where you will apply all the knowledge and be able to put it into a report.

I hope you enjoyed this course as much as I enjoyed teaching it!

I’m looking forward to meeting you in the next course!