Direction-oriented stress-constrained topology optimization of orthotropic materials

Efficient optimization of topology and raster angle has shown unprecedented enhancements in the mechanical properties 3D printed materials. Topology helps reduce waste raw material fabrication parts, thus decreasing production costs associated with manufacturing lighter structures. Fiber orientation plays an important role increasing stiffness a structure. This paper develops tests new method for handling stress constraints fiber orthotropic The are coupled objective function that maximizes stiffness. is accomplished by using modified solid isotropic penalization moving asymptotes as mathematical optimizer. Each element fictitious density main design variables. To number computational cost, clustering strategy employed which highest stresses principal coordinates grouped separately into two clusters adjusted P-norm. A detailed description formulation sensitivity analysis discussed. While we present 2D structures numerical examples section, can also be used structures, generic. Our results show this produce efficient suitable printing while thresholding stresses.