18 Jan

Plate Buckling Study, Irregular-shaped plate, Details

Chang Liu origami robots

Goal: Computational design of foldable robot system

-- Computational design of foldable robot bodies, under mechanical specifications (e.g. loading condition)
---- Computational design of building plates in foldable robot bodies
------ Computational design of polygon (irregular-shapped plates) under transverse load and under lateral load

What's New?

Computational design of polygon (irregular-shapped plates) under transverse load (Out-of-plane load)

  • Since the last research group meeting, here are quick summaries of what have been done:

    • (1) Algorithm completely implemented.
    • (2) Displacement, stresss, strains, moments, reaction forces and etc have been implemented.
    • (3) Simple validations using existing analytical solutions.
    • (4) Calculation speed increased by 95% percent.

  • There are a few more things to be done:

    • (1) Validation using FEA tool.
    • (2) Debugging if any.
Computational design of polygon (irregular-shapped plates) under lateral load (In-plane load)

  • Here are quick summaries of what have been done, so far:

    • (1) (A lot of) Back ground research.
    • (2) Fully write-up of the algorithm can be found here.
    • (3) Algorithm partially implemented, while still need debugging.

  • Current problems:

    • (1) Current mapping seems to work only for maximum 4 deges polygon.
    • (2) Mapping from (x, y) domain into (\(\zeta\), \(\eta\)) has not been done and validated yet. Which may lead to the next problem.
    • (3) In-plane deformation not working as expected. Now using rectangular plates with simply-supported boundary conditions as an example to debug the code.

  • There are a few more things to be done:

    • (1) Expand alrorithm to more general cases (this will keep me busy for another week at least).
    • (2) Validation using FEA tool.
    • (3) Debugging if any.

Some New Knowlegde (for me)

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