Topic
Minimum weight
About: Minimum weight is a research topic. Over the lifetime, 2002 publications have been published within this topic receiving 28244 citations.
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28 Oct 2013
TL;DR: In this paper, the authors proposed a weight optimization of forced convection cooling systems, composed of fan and extruded fin heat sink, required for a dc-dc converter of an airborne wind turbine (AWT) system.
Abstract: This Paper details the weight optimization of forced convection cooling systems, composed of fan and extruded fin heat sink, required for a dc-dc converter of an airborne wind turbine (AWT) system. The presented investigations detail the optimization of the heat sink's fins with respect to minimum weight and the selection of a suitable fan for minimum overall system weight. A new analytical cooling system model is introduced, the calculated results are compared to the results determined with a preexisting analytical model and Finite Element Model (FEM) simulations. The comparison to experimental results demonstrate the accuracy improvements achieved with the proposed methods. Compared to commercially available products a weight reduction of 52% is achieved with the proposed optimization procedure for the required heat sink system with Rth, S-a = 1K/W.
42 citations
TL;DR: In this paper, a practical optimization method is applied to design nonlinear truss-like structures subjected to seismic excitation, where inefficient material is gradually shifted from strong parts to weak parts of a structure until a state of uniform deformation prevails.
42 citations
TL;DR: The structural synthesis concept is used to automatically size members, select the geometric configuration or layout, and determine the combination of attainable material properties in order to achieve a minimum weight optimum design as discussed by the authors.
Abstract: The structural synthesis concept is used to automatically size members, select the geometric configuration or layout, and determine the combination of attainable material properties in order to achieve a minimum weight optimum design. The structural behavior is stress, displacement, and stability limited under a multiplicity of load conditions. Using the three bar truss to illustrate the method leads to a nine dimensional design parameter space and a nonlinear weight function. The configuration and material design parameters are treated as continuous variables in addition to the sizing parameters. The structural synthesis capacity illustrates quantitatively the feasibility of extending synthesis capabilities upward into the design parameter hierarchy, provides an efficient means for materials selection from existing materials, and suggests that structural synthesis can provide a means of determining material properties that are desirable for a particular job based on structural optimization.
41 citations
TL;DR: In this article, the Complex Method of Box is applied to the determination of optimal member sizes and geometric configuration for minimum weight of 3-dimensional truss structures, where the displacement method of structural analysis is used and the system is assumed to be linearly elastic.
41 citations
TL;DR: In this article, a total of eight different panel geometries are considered, including hat-and blade-stiffened panels, and square, triangular and trapezoidal cores.
Abstract: Compression panels comprised of a corrugated core bonded to either one or two face sheets are optimally designed for minimum weight. Results obtained from two optimization procedures are compared: naive optimization where simultaneous occurrence of failure modes is assumed, and sequential quadratic programming (SQP) based optimization. A total of eight different panel geometries are considered, including hat- and blade-stiffened panels, and square, triangular and trapezoidal cores. From a weight standpoint, panels with hat-stiffeners are found to be the most efficient for the given boundary conditions, about 40% lighter at some load levels than the least efficient-sandwich panels with a square core.
41 citations