@article{CAMES, author = {Stefan Jendo and Witold Paczkowski and Ewa Silicka}, title = { Discrete multicriteria reliability-based optimization of spatial trusses}, journal = {Computer Assisted Methods in Engineering and Science}, volume = {14}, number = {3}, year = {2022}, keywords = {}, abstract = {The paper presents problem of discrete multicriteria optimization of two-layer regular orthogonal spatial trusses. Three criteria of evaluation are taken into account, namely: minimum of weight, maximum of reliability and maximum of stiffness of the structure. To simplify the problem, decomposition techniques are applied. The decision variables are cross-sections of the truss members. The best possible cross section is selected for each bar from a discrete catalogue. Other decision variables (coordinated variables) describe also the geometry of the structure. The multicriteria reliability-based algorithm allows for evaluating the objective functions values and then finding sets of nondominated evaluations and solutions. Reliability of the structure is expressed by the Hasofer-Lind reliability index β.}, issn = {2956-5839}, pages = {485--496}, url = {https://cames.ippt.gov.pl/index.php/cames/article/view/818} }