A displacement-based optimization for truss structures subjected to static and dynamic constraints

Samy Missoum; Zafer Gürdal; Pascal Hernandez; Jean Guillot

doi:10.2514/6.1998-4793

A displacement-based optimization for truss structures subjected to static and dynamic constraints

Samy Missoum, Zafer Gürdal, Pascal Hernandez, Jean Guillot

Research output: Contribution to conference › Paper › peer-review

9 Scopus citations

Abstract

The use of displacements as design variables for truss structure optimization is considered as an alternative to the conventional, nested FE analysis based design approach. A two level optimization has been developed; in an inner level, cross sectional areas of truss members are designed for a given displacement field, and in an outer level, optimal displacements are searched trough the use of sequential linear programming. The efficiency and the speed of the method are shown by two test examples for some weight minimization. The evolution of the areas and of the weight is studied. Beside the efficiency of the method, one of the main conclusion is that the weight is always continuous trough the design history although areas might exhibits large discontinuities.

Original language	English (US)
Pages	681-690
Number of pages	10
DOIs	https://doi.org/10.2514/6.1998-4793
State	Published - 1998
Externally published	Yes
Event	7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 1998 - St. Louis, United States Duration: Sep 2 1998 → Sep 4 1998

Other

Other	7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 1998
Country/Territory	United States
City	St. Louis
Period	9/2/98 → 9/4/98

ASJC Scopus subject areas

Aerospace Engineering
Mechanical Engineering

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10.2514/6.1998-4793

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A displacement-based optimization for truss structures subjected to static and dynamic constraints. / Missoum, Samy; Gürdal, Zafer; Hernandez, Pascal et al.
1998. 681-690 Paper presented at 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 1998, St. Louis, United States.

Research output: Contribution to conference › Paper › peer-review

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abstract = "The use of displacements as design variables for truss structure optimization is considered as an alternative to the conventional, nested FE analysis based design approach. A two level optimization has been developed; in an inner level, cross sectional areas of truss members are designed for a given displacement field, and in an outer level, optimal displacements are searched trough the use of sequential linear programming. The efficiency and the speed of the method are shown by two test examples for some weight minimization. The evolution of the areas and of the weight is studied. Beside the efficiency of the method, one of the main conclusion is that the weight is always continuous trough the design history although areas might exhibits large discontinuities.",

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AB - The use of displacements as design variables for truss structure optimization is considered as an alternative to the conventional, nested FE analysis based design approach. A two level optimization has been developed; in an inner level, cross sectional areas of truss members are designed for a given displacement field, and in an outer level, optimal displacements are searched trough the use of sequential linear programming. The efficiency and the speed of the method are shown by two test examples for some weight minimization. The evolution of the areas and of the weight is studied. Beside the efficiency of the method, one of the main conclusion is that the weight is always continuous trough the design history although areas might exhibits large discontinuities.

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A displacement-based optimization for truss structures subjected to static and dynamic constraints

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