Profiled sheets - the optimum vs the oft used

摘要

Shape, as a primary design variable, warrants consideration in structural optimization. The mode of the transmission of force is a function of configuration. The technical success of optimization depends on how efficiently the load flow is accomplished. Decision-making that leads to final geometry represents the highest level of structural engineering.rnShape optimization of structures is an ever-growing area of research that has attracted the attention of several researchers. Shape searching problem formulation and solution techniques have been detailed in numerous articles (Beveridge and Schechter 1970, Gallagher and Zienkiewicz 1977, Richard Courant and Frite John 1989). The optimization of curved structures, such as arches and shells under mechanism constraints have been extensively studies (Rozvany 1992). Parametric surfaces such as Bezier surfaces considering stress deviation or fundamental frequency, have been employed to optimize shells (Ramm 1993). Reanalysis techniques expediting design process without compromising accuracy for boundary element systems have been detailed by Leu (1999). The efficacy of fuzzy optimum design has been demonstrated by Kang et al. (1999).