Use of the multilevel approach in the design of the spatial structures from short-fibrers reinofoced composites

The paper presents a technique for designing spatial loaded aerospace structures made of short-reinforced composite materials. The power circuit of design was obtained using topological optimization. An account of technological constraints imposed by the product manufacture by molding was done. The designing of injection molding equipment and the design refinement using parametric optimization is presented. The verification calculation of the stress-strain state was carried out in ANSYS Workbench coupled with Digimat CAE to take into account the anisotropy of the material properties in each grid element.