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Structural optimization using the Newton modified barrier method
The Newton modified barrier method, based on rigorous mathematical derivation, was used to solve three structural optimization test problems. The varying number of size variables for the three problems was used to study the effect of the number of variables on the number of iterations needed to achieve similar levels of convergence. This dependence was shown to be weak for the NMBM (Newton Modified Barrier Method), similar to this well-known characteristic of the basic OC (optimality criteria) methods. The same problems were solved by the ASTROS program with MicroDot as the optimizer, and also by an OC-based program. The NMBM is shown to have superior convergence properties, reducing the objective function at a much faster and more uniform rate, thus indicating superior robustness. This fast converging robust approach has promising potential for solving structural sizing problems with large numbers of variables within the emerging multidisciplinary optimization (MDO) problem setting.
Structural optimization using the Newton modified barrier method
The Newton modified barrier method, based on rigorous mathematical derivation, was used to solve three structural optimization test problems. The varying number of size variables for the three problems was used to study the effect of the number of variables on the number of iterations needed to achieve similar levels of convergence. This dependence was shown to be weak for the NMBM (Newton Modified Barrier Method), similar to this well-known characteristic of the basic OC (optimality criteria) methods. The same problems were solved by the ASTROS program with MicroDot as the optimizer, and also by an OC-based program. The NMBM is shown to have superior convergence properties, reducing the objective function at a much faster and more uniform rate, thus indicating superior robustness. This fast converging robust approach has promising potential for solving structural sizing problems with large numbers of variables within the emerging multidisciplinary optimization (MDO) problem setting.
Structural optimization using the Newton modified barrier method
Optimierung von Fachwerkträgern mit Hilfe der Newton- und der modifizierten Barrieren-Methode
Khot, N.S. (Autor:in) / Polyak, R.A. (Autor:in) / Schneur, R. (Autor:in) / Berke, L. (Autor:in)
Structural Optimization ; 10 ; 209-216
1995
8 Seiten, 7 Bilder, 16 Quellen
Aufsatz (Zeitschrift)
Englisch
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