A component-based method for the optimization of stiffener layout on large cylindrical rib-stiffened shell structures

In the present work, an optimization method is proposed in order to produce innovative stiffening layouts for large stiffened cylindrical shell structures, as they appear aerospace industry. A component-based logic applied on a ground mesh of structural elements (shells and beams), which was inspired by techniques explicit topology solid (plane or tridimensional massive models). Geometric components, representing layout stiffeners (i.e. location, shape size), are projected onto mesh, resulting controlled sets active beam elements. These constitute representation stiffeners’ model, then used evaluate objective constraint functions problem well their semi-analytical sensitivities. By applying compliance minimization problems, we show efficiency accuracy its capability handle typical structure, such space-launcher part: presence access hatch.