Abstract
The solution of the shape optimization problem for simply and multiply-connected orthotropic sections under Saint Venant torsion is obtained by using the Boundary Element Method. The objective function is the area of the section, while the only constraint corresponds to a given torsional stiffness. The nonlinear optimization algorithm is also discussed. These criteria are used to obtain a consistent and automatic boundary redefinition with a minimum number of iterations in the optimization process. Finally, a brief description of the program and several examples are also included.
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