SUMMARYThe paper is concerned with the solution of non-linear wave distribution in structural fibre members subjected to dynamic kinematic forcing. The development of reliable and efficient techniques for numerical handling of wave distribution based on the application of combined finite-element and transfer matrix approaches is emphasized. Illustrative numerical solutions are presented.
SUMMARYAn active control of the load-bearing capacity of slender bridges is treated in the present paper. Interactive conditions in ultimate response are considered. A numerical treatment of the occurring/appearing non-linear problems is made using the updated Lagrangian formulation of motion. Each step of the iteration approaches the solution of linear problem and the feasibility of the parallel processing FETMtechnique with adaptive mesh refinement and substructuring for the analysis of ultimate behaviour of bridges is established. Application to an actual bridge is submitted in order to demonstrate the efficiency of the procedures suggested.
SUMMARYBionics and fractal configurations mapping the schemes from the nature and adopted in present structural engineering are dealt with in present paper. Theoretical and numerical assessments of such configurations are based on the wave approaches running in neural network models corresponding with the genetic algorithms also appearing in nature. Generalized ultimate behaviour of such configurations and structures is analysed. Some structural applications based on such principles are presented.
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