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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!

My name is Daniel Sá, and I will be your instructor for this Finite Element Analysis for Marine Structures course. I’m a Naval Architect with almost 20 years of experience in numerical simulation.

Why Finite Element Analysis? Finite element analysis has become a must for structural engineering, heat transfer, fluid flow, sea-keeping, and electromagnetics.

This course covers both the theoretical and practical aspects of finite element analysis.

In the theoretical section, we will cover the resistance and elasticity of materials, the beam-ship model and the initial scantling of hull structures, the different types of elements in the hull, and some of the aspects of the finite element theory (transfer functions, the different element types, etc.).

We will also cover how definite element methodology is coded into software: how the data is input, how it is processed, how the different boundary conditions, loads, etc., are assembled in the system matrix, and how that system is solved by means of different types of numerical solvers and how the code is able to output the solutions.

What about the practical lessons? In the practical lessons, you will learn how to install and work with a finite element software and how to import, prepare, repair, and clean 3D models, which we will use to analyze the structure. You will also learn how to apply local axes, interpret and apply boundary conditions correctly, apply loads, assign materials, generate correct meshes, assign sizes, and refine the meshes so that we can find a stable solution. We’ll also review how to calculate, how to post-process results, how to interpret the different results, and how to be able to extract them and use them in a compliant professional report.

The goal of the course is that after completing it, you will be able to analyze and verify with finite elements a marine structure but also any other structure.

For the practical part of the course, we will use a commercial software developed by Compass. You, as students, will receive free educational licenses. All of the concepts we will show in this course can be applied to another generic finite element code or commercial software.

At the end of the course, there will be a final project where you will be able to apply all the knowledge to verify the structure of a planning motorboat. Additionally, during the course, you will see that the different examples apply to a planning motorboat and a bulk carrier.

This course focuses on static and linear analysis. We plan to develop another extension involving nonlinear materials, nonlinear boundary conditions, large movements, and dynamic loads.

Who is this course for? Naval Architects, Marine Engineers, Civil Engineers, Architects, and anyone involved with structural analysis. The course focuses on marine structures, but the concepts can be applied to any other type of structure. It will also benefit students, researchers, Ph. D.s, and professors looking to transfer this knowledge to their students.

I hope you are as excited as I am. I really look forward to meeting you in the course.