Optimal Design of Truss Structures with Frequency Constraints Using Interior Point Trust Region Method

Nowadays, in the industrial environment of simulation-based design, optimization has been widely applied. This article illustrates that how truss structural frequency optimization problems is being solved by interior point trust region method (IPTRM). As a possible way, primal-dual interior point method could optimize the structure by multiple centrality modifications with trust region subproblems. Through these series of correction, the algorithm’s convergence has been improved progressively. Moreover, IPTRM verifies the classical truss structures with the conclusion that it is more reliable and efficiency than any other algorithm when meet the certainly accuracy level, especially, when time is the constraint, IPTRM seems to be the superior solution for large optimization problems.