Hayalioglu, MSUlker, M2024-04-242024-04-2419970-948749-52-0https://hdl.handle.net/11468/21961Mouchel Centenary Conference on Innovation in Civil and Structural Engineering -- AUG 19-21, 1997 -- CAMBRIDGE, ENGLANDThis paper demonstrates an optimization algorithm of frames and trusses considering natural frequency constraints. The fundamental natural frequency of a structure is required to be greater than or equal to its prescribed value. The optimality criterion method is used to develop a recursive relationship for the weight minimizing problem. This relationship and a single Lagrange multiplier are derived for member groups in the structure. A lumped mass model is adopted in the free vibration analyses and large non-structural masses are imposed on the structures. A number of design examples are presented to demonstrate the application of the algorithm. Optimum designs of the same structures are obtained for various frequency constraints.eninfo:eu-repo/semantics/closedAccess[No Keyword]Conference Object95100WOS:000071361900013N/A