## Approximation concepts for efficient structural synthesis, Volume 2552 |

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### Contents

SUMMARY | 1 |

APPROXIMATION CONCEPTS THE KEY TO CONSTRUCTING TRACTABLE | 27 |

A NEW STRUCTURAL SYNTHESIS CAPABILITY | 53 |

6 other sections not shown

### Common terms and phrases

18 Element Wing ACCESS 1 NEWSUMT approximate problem approximation concepts Bar Cantilever Truss Bar Space Truss compressive stress configuration group CONMIN critical constraints cross sectional area CST Model degrees of freedom Delta Wing Examples design procedure design variable linking Displacement Boundary Conditions displacement constraints displacement degrees Element Descriptions Element Swept Wing Element Wing Box explicit approximations finite element analysis finite element structural given in Table Histories for Problem hyperspheres independent design variables initial design iterative design Load Condition Data Lower Limit mathematical programming method minimum member NEWSUMT Nodal Coordinates number of independent objective function optimum design partial derivatives penalty function Planar Ten Bar Problems 10A reduced basis reducing the number reported in Ref response quantities skin spar caps SSP elements stress constraints structural analysis system stiffness matrix Taylor series total number TRUSS elements U.S. customary units upper limit vectors version of ACCESS Wing Box Example