Finite element based optimization of complex structures on a CRAY X-MP supercomputer

Abstract

The development of an interface between the finite element program ABAQUS and the optimization program ADS, on a CRAY X-MP supercomputer, under both the COS and UNICOS operating systems, is reported. The interface not only links the two programs, but also takes advantage of the uncoupled nature of the constraint gradient computations to perform them in parallel. As such, the execution time of large structural optimization problems can be significantly reduced. The interface is used to perform the design optimization of an aircraft canopy frame with respect to its weight. The formulation of the optimization problem for the canopy and its final solution are presented. Finally, and in light of the design experience gained from this effort, recommendations for the structural optimization procedure of large structures are presented.