Important announcement

Dear visitor,

Please note that this OpenCourseWare platform will be replaced at the end of 2026 by a new platform (under the same url ocw.tudelft.nl).

Courses and their contents that are currently available the platform will partly be migrated. URL’s for this content will change and content might be unavailable for some time. In addition, some courses will not be available anymore.

If you are linking to specific courses on this platform (for instance for your students), please take timely measures to avoid problems with access. Possible actions are:

  • Download the materials to your local platform (laptop, server)
  • For educators only (including TU Delft lecturers): Contact us at ocw@tudelft.nl and inform us what course you are using in what context (institute, program, period of use, number of students). We will research (in collaboration with the authors of the course) and decide if we will migrate the course, and if yes, can supply you with a new url.

Thank you.

Classical Laminate Theory (CLT)

In this subject, Dr. C. Kassapoglou continues the discussion about Classical Laminated Plate theory.

Last time he ended with in-plane laminate behavior, this time the out-of-plane behavior for the case of pure bending and membrane-bending coupling behavior are discussed. He tells how to obtain the equivalent stress-strain relations for a laminate bycombining everything. He then shows what the stiffness matrix should look like for symmetric and balanced laminates and how the elastic constants for a laminates can be obtained.

In the second part of the lecture Dr. C. Kassapoglou talks about the first ply failure criteria and failure prediction in general, followed by the description of ply failure modes. He finishes the course introduction with a review of  the most commonly used failure criteria and their relation to experimental results. The final segment covers real world composite structures examples.
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