Structural optimization with dynamic behavior constraints
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Mills-Curran, W. C.↗
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Mills-Curran, W. C.
Publications and source records attributed to Mills-Curran, W. C..
Approximations method for space frame synthesis
Previously cited in issue 13, p. 2109, Accession no. A82-30149
Mills-Curran, W. C.↗
Structural optimization with dynamic behavior constraints
The minimum weight optimum design of damped linearly elastic structural systems subjected to periodic loading with behavior constraints on maximum deflections and side constraints on design variables is addressed. Attention is focused on the two major impediments to an optimal solution: (1) the time parametric nature of the behavior constraints; and (2) the severe nonconvexity of the design space. A solution method based on upper bound approximations for the behavior constraints and an innovative mathematical programming scheme for seeking the optimal frequency subspace is set forth. Numerical results for several test problems illustrate the effectiveness of the method reported.
Mills-Curran, W. C.↗
An approximation concepts method for space frame synthesis
A method is presented for the minimum mass design of three dimensional space frames constructed of thin walled rectangular cross-section members. Constraints on nodal displacements and rotations, material stress, local buckling, and cross sectional dimensions are included. A high quality separable approximate problem is formed in terms of the reciprocals of the four section properties of the frame element cross section, replacing all implicit functions with simplified explicit relations. The cross sectional dimensions are efficiently calculated without using multilevel techniques. Several test problems are solved, demonstrating that a series of approximate problem solutions converge rapidly to an optimal design.
Mills-Curran, W. C.↗