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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01 Jan 1993TL;DR: In this article, a probabilistic optimal design methodology for complex structures modelled with finite element methods is presented, where the main emphasis is on developing tools suitable for optimization and an advanced second-moment method is employed to evaluate the failure probability of the performance function.
Abstract: A probabilistic optimal design methodology for complex structures modelled with finite element methods is presented. The main emphasis is on developing probabilistic analysis tools suitable for optimization. An advanced second-moment method is employed to evaluate the failure probability of the performance function. The safety indices are interpolated using the information at mean and most probable failure point. The minimum weight design with an improved safety index limit is achieved by using the extended interior penalty method of optimization. Numerical examples covering beam and plate structures are presented to illustrate the design approach. The results obtained by using the proposed approach are compared with those obtained by using the existing probabilistic optimization techniques.
19 citations
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19 citations
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TL;DR: In this article, a technique to derive numerical derivatives of finite element matrices with respect to a set of design variables is described, which are: thickness, angles of orthotropy and shape.
19 citations
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TL;DR: In this paper, several combinations of material and configuration are proposed for structure, and structural synthesis is used to select combination giving minimum weight design; method provides means of obtaining minimum weight, optimum design for each candidate combination; possibility of incorrect selection of material or configuration, or both, resulting in substantial weight penalty is shown; basic concepts of structural synthesis are presented and applied to 3-bar truss.
Abstract: Several combinations of material and configuration are proposed for structure, and structural synthesis is used to select combination giving minimum weight design; method provides means of obtaining minimum weight, optimum design for each candidate combination; possibility of incorrect selection of material or configuration, or both, resulting in substantial weight penalty is shown; basic concepts of structural synthesis are presented and applied to 3-bar truss.
19 citations
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TL;DR: An efficient diagonal quadratic optimization formulation for minimum weight design problem subject to multiple constraints is developed and can achieve lighter weight than those from the established method by the demonstrative numerical test.
19 citations