caa a22 4500 463243579 CHVBK 20180405153319.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s00158-006-0061-7 doi (NATIONALLICENCE)springer-10.1007/s00158-006-0061-7 An adaptive approach to constraint aggregation using adjoint sensitivity analysis [Elektronische Daten] [Nicholas Poon, Joaquim Martins] Constraint aggregation is the key for efficient structural optimization when using a gradient-based optimizer and an adjoint method for sensitivity analysis. We explore different methods of constraint aggregation for numerical optimization. We analyze existing approaches, such as considering all constraints individually, taking the maximum of the constraints and using the Kreisselmeier-Steinhauser (KS) function. A new adaptive approach based on the KS function is proposed that updates the aggregation parameter by taking into account the constraint sensitivity. This adaptive approach is shown to significantly increase the accuracy of the results without additional computational cost especially when a large number of constraints are active at the optimum. The characteristics of each aggregation method and the performance of the proposed adaptive approach are shown by solving a wing structure weight minimization problem. Springer-Verlag Berlin Heidelberg, 2006 Constraint aggregation nationallicence Constraint handling nationallicence Adjoint sensitivity analysis nationallicence Kreisselmeier-Steinhauser function nationallicence Adaptive constraint aggregation nationallicence Poon Nicholas University of Toronto Institute for Aerospace Studies, 4925 Dufferin St., M3H5T6, Toronto, ON, Canada aut Martins Joaquim University of Toronto Institute for Aerospace Studies, 4925 Dufferin St., M3H5T6, Toronto, ON, Canada aut Structural and Multidisciplinary Optimization Springer-Verlag 34/1(2007-07-01), 61-73 1615-147X 34:1<61 2007 34 158 https://doi.org/10.1007/s00158-006-0061-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00158-006-0061-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Poon Nicholas University of Toronto Institute for Aerospace Studies, 4925 Dufferin St., M3H5T6, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Martins Joaquim University of Toronto Institute for Aerospace Studies, 4925 Dufferin St., M3H5T6, Toronto, ON, Canada aut NATIONALLICENCE 773 0- Structural and Multidisciplinary Optimization Springer-Verlag 34/1(2007-07-01), 61-73 1615-147X 34:1<61 2007 34 158 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer