Different results in composite size optimization and its results file

prcm

Hello,

I'm doing a composite optimization on a model. Did the free-size optimization, edited the ply bundles, the ply manufacturing thicknesses, and the design variables thresholds according to the manufacturing thickness. Included other manufacturing constraints.

The objective of the composite size optimization was to minimize mass with a maximum displacement of 6.38 mm constraint.

The size optimization results converged with no constraint violations, and a maximum displacement of 6.25 mm.

 

With the 7th iteration resulting file did an analysis to check the results and the supposed displacement of 6.25 mm changed to 10.64 mm.

 

I've compared the .out file from the size optimization with the resulting plies created in the .fem file and they are equivalent.

The laminate stacking in the arms and center is symmetric smear in free-size and size optimization and symmetric in the shuffle/analysis. The wheel barrel laminate is not optimized.

What am I doing wrong?

.fem files: https://we.tl/t-lsCU42z3e0

modelo_FEM.png

Adriano_Koga

one question:

 

in your Optimization convergence curve, it is shown ID 917134 for the control node. But when you mention analysis, you're looking at the maximum value at the model, at node 862645.

Are these close to each other?

Looks like in your optimization you're measuring the displacement somewhere else, and not at the maximum.