A numerical method is presented for initial prestress design of various cable dome structures with multiple independent prestressed modes. A new and robust approach for the purpose of obtaining a unique feasible prestressed mode is proposed by systematically increasing or decreasing the number of member groups and/or directly assigning some linear relations on the force densities between some specific groups until the unique feasible prestressed mode is found. On the other hand, these manually assigned linear relations can allow designers more control over the prestress design. Evaluation of the stability for the structure is also considered. Numerical examples are presented to demonstrate the efficiency and robustness in obtaining a unique feasible prestressed mode for various cable domes.
Bibliographical noteFunding Information:
This research was supported by National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology through NRF2010-0019373 and NRF2011-0018360 , and by Korea Ministry of Knowledge Economy under the National HRD support program for convergence information technology supervised by National IT Industry Promotion Agency through NIPA-2010-C6150-1001-0013 .
All Science Journal Classification (ASJC) codes
- Computer Graphics and Computer-Aided Design
- Applied Mathematics