| Title |
Maximum Stiffness-Based Size Optimization Design for High-Rise Steel Truss System |
| Authors |
Lee Dong-Kyu ; Shin Soo-Mi ; Park Sung-Soo |
| Keywords |
Size Optimization Design ; High-rise Steel Truss ; Maximum Stiffness ; Volume Constraints ; Optimality Criteria |
| Abstract |
This study presents a structural design optimizing sizes of high-rise steel plane truss members by maximizing stiffness subjected to given volume constraints. The sizing optimum design is evaluated by using a well-known optimality criteria (OC) of gradient-based optimization methods. In typical size optimization methods, truss structures are optimized with respect to minimum weight with constraints on the value of some displacement and on the member stresses. The present method is an inversed size optimization in comparisons with the typical size optimization methods since it maximizes stiffness associated with stresses or displacements subjected to volume constraints related to weight. The inversed approach is another alternative to classical size optimization methods in order to optimize members' sizes in truss structures. Numerical applications of a round shape steel pipe truss structure are studied to verify that the proposed maximum stiffness-based size optimization design is suitable for optimally developing truss members's sizes. |