Topology optimization with linearized buckling criteria in 250 lines of Matlab

We present a 250-line Matlab code for topology optimization linearized buckling criteria. The is conceived to handle stiffness, volume and load factors (BLFs) either as the objective function or constraints. use Kreisselmeier-Steinhauser aggregation in order reduce multiple objectives (viz. constraints) single, differentiable one. Then, problem sequentially approximated by using MMA-like expansions an OC-like scheme tailored update variables. inspection of stress stiffness matrix leads vectorized implementation its efficient construction sensitivity analysis BLFs. This, coupled with efficiency improvements already presented Ferrari Sigmund (Struct Multidiscip Optim 62:2211–2228, 2020a), cuts all computational bottlenecks associated setting up allows problems interesting size be solved on laptop. flexibility are demonstrated over few structural design examples some ideas given possible extensions.