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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. Before starting
  4. Introduction to Elasticity and Resistance of Materials
    Introduction to Elasticity and Resistance of Materials
    1 Quiz
  5. Basic scantling of ships’ hulls
    Basic scantling of ships' hulls
    1 Quiz
  6. Introduction to the Finite Element Method (FEM)
    Introduction and history of the Finite Element Method (FEM)
  7. Basic concepts and element types
  8. Linear static problems in Finite Element Analysis (FEA): Discretization of the solution and shape functions
  9. Linear static problems in Finite Element Analysis (FEA): Strains, stresses and nodal forces
  10. Linear static problems in Finite Element Analysis (FEA): Stiffness matrix, boundary conditions, loading, and solution of the system
  11. Overview of a FEA code
  12. Optional Activity 1
  13. Introduction to a FEA software
    Software download, installation and validation
  14. General Preferences and GUI
  15. CAD: tools
  16. CAD: layers
  17. Optional Activity 2
  18. Geometry
    Geometry: import
  19. Geometry: repair
  20. Optional Activity 3
  21. Local axes
    Local axes: definition
  22. Local axes: applications
  23. Optional Activity 4
  24. Beams and shells
    Models with beams and shells
  25. Complete FE simple model: constraints
  26. Complete FE simple model: materials
  27. Complete FE simple model: loads
  28. Optional Activity 5
  29. Meshing of FEA models
    Meshing preferences, assigning different element types and changing elements' order
  30. Assigning element sizes and divisions: unstructured and structured meshes
  31. Optional Activity 6
  32. Analysis and post-processing of results
    Launching a simulation
  33. Post-processing procedures
  34. Optional Activity 7
  35. Case study
    Problem statement. CAD definition and preparation
  36. Boundary conditions and materials
  37. Loads
  38. Meshing
  39. Post-process and reporting of results
  40. Regulations
    FEM Regulations
  41. Final Assignment
    Final Assignment
  42. Course Materials
    Course Materials
  43. Bonus: Laminated composites in FEA
    Composite materials theories in FEA
  44. Creation and assignment of laminated materials in FEA
  45. Post-processing structures with laminated materials
  46. Course Survey
    Course Evaluation Survey
    1 Quiz
  47. 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!