TY - RPRT

T1 - Further Developments on Optimum Structural Design Using
MSC/Nastran and Sequential Quadratic Programming

AU - Holzleitner, Ludwig

PY - 1996

Y1 - 1996

N2 - This work is closely connected to the paper: K.G. MAHMOUD, H.W.
ENGL and HOLZLEITNER: "OPTIMUM STRUCTURAL DESIGN USING MSC/NASTRAN
AND SEQUENTIAL QUADRATIC PROGRAMMING", Computers & Structures,
Vol. 52, No. 3, pp. 437-447, (1994). In contrast to that paper,
where thickness optimization is described, here the shape of two
dimensional parts with different thickness areas will be
optimized. As in the previos paper, a methodology for structural
optimization using the commercial finite element package
MSC/NASTRAN for structural analysis is described. Three different
methods for design sensitivity analysis and gradient calculation
are used, together with sequential quadratic programming with an
active set strategy for optimization. The optimization and
sensitivity analysis modules are efficiently coupled with
MSC/NASTRAN using DMAP (direct matrix abstraction program)
statements. To demonstrate the feasibility of the proposed
methodology, the shape optimization of a unit injector rocker arm
is presented as an example.

AB - This work is closely connected to the paper: K.G. MAHMOUD, H.W.
ENGL and HOLZLEITNER: "OPTIMUM STRUCTURAL DESIGN USING MSC/NASTRAN
AND SEQUENTIAL QUADRATIC PROGRAMMING", Computers & Structures,
Vol. 52, No. 3, pp. 437-447, (1994). In contrast to that paper,
where thickness optimization is described, here the shape of two
dimensional parts with different thickness areas will be
optimized. As in the previos paper, a methodology for structural
optimization using the commercial finite element package
MSC/NASTRAN for structural analysis is described. Three different
methods for design sensitivity analysis and gradient calculation
are used, together with sequential quadratic programming with an
active set strategy for optimization. The optimization and
sensitivity analysis modules are efficiently coupled with
MSC/NASTRAN using DMAP (direct matrix abstraction program)
statements. To demonstrate the feasibility of the proposed
methodology, the shape optimization of a unit injector rocker arm
is presented as an example.

M3 - Report

BT - Further Developments on Optimum Structural Design Using
MSC/Nastran and Sequential Quadratic Programming

ER -