TY - GEN

T1 - Optimization of nonlinear structures based on object-oriented parallel programming

AU - Fischer, M.

AU - Firl, M.

AU - Masching, H.

AU - Bletzinger, K. U.

PY - 2010

Y1 - 2010

N2 - This contribution presents a computational framework for simulation and gradientbased structural optimization of geometrically nonlinear and large-scale structural finite element models. CAGD-free optimization methods have been developed to integrate shape optimization in an early stage of design and to reduce the related modelling effort. To overcome the problem of an increasing numerical cost due to the large design space, the design sensitivities for objectives and constraints are evaluated via adjoint formulations. A new parallel computation strategy for sensitivity evaluation is presented which takes advantage of a completely parallelized simulation and optimization environment. Two application examples illustrate the method and demonstrate the high parallel efficiency.

AB - This contribution presents a computational framework for simulation and gradientbased structural optimization of geometrically nonlinear and large-scale structural finite element models. CAGD-free optimization methods have been developed to integrate shape optimization in an early stage of design and to reduce the related modelling effort. To overcome the problem of an increasing numerical cost due to the large design space, the design sensitivities for objectives and constraints are evaluated via adjoint formulations. A new parallel computation strategy for sensitivity evaluation is presented which takes advantage of a completely parallelized simulation and optimization environment. Two application examples illustrate the method and demonstrate the high parallel efficiency.

KW - C++

KW - CAGD-free optimization

KW - Finite element method

KW - Nonlinear kinematics

KW - Object-oriented programming

KW - Parallel programming

KW - Structural optimization

UR - http://www.scopus.com/inward/record.url?scp=84858437205&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84858437205

SN - 9781905088393

T3 - Proceedings of the 7th International Conference on Engineering Computational Technology

BT - Proceedings of the 7th International Conference on Engineering Computational Technology

T2 - 7th International Conference on Engineering Computational Technology, ECT 2010

Y2 - 14 September 2010 through 17 September 2010

ER -