Z. Bittnar

Microplane models: computational aspects and proposed parallel algorithm

This paper discusses microplane models from the computational point of view. The basic introduction to microplane based models will be given. The computational aspects of these models will be discussed in details and an efficient parallel algorithm for explicit time integration will be proposed. The efficiency of the algorithm will be presented.

Hybrid optimization approach to design of reinforced concrete frames

This paper presents discrete optimization of reinforced concrete structures based on an efficient combination of deterministic and stochastic optimization strategies. The deterministic optimization algorithm is used for the detailing of a reinforced concrete cross-section for a given combination of internal forces. The stochastic optimization algorithm, based on the Augmented Simulated Annealing, is used for the optimization of a whole structure in terms of basic structural characteristics like types of materials, dimensions of elements or profiles of steel bars. The implicit parallelization of genetic algorithm is implemented to reduce the overall computational time. Obtained preliminary results outline the direction of future research.