Optimization in reliability based design of laminated composite structures

• Type: Article in International Conference Proceedings Book
• Date: 1993

Authors

C. A. C. Antonio (Author) FEUP; A. V. Soeiro (Author) FEUP; A. T. Marques (Author) FEUP

Conference proceedings International

Title: COMPUTER AIDED OPTIMUM DESIGN OF STRUCTURES III: OPTIMIZATION OF STRUCTURAL SYSTEMS AND APPLICATIONS

Pages: 391-400

3rd International Conference on Computer Aided Optimum Design of Structures (OPTI/93)

ZARAGOZA, MEXICO, JUL, 1993

Indexing

ISI Proceedings

ISI Web of Knowledge - 0 Citations

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Other information

Authenticus ID: P-001-NHJ

Abstract (EN): Design of laminated composite structures is made using rules based on service stresses criteria. The replacement of these criteria by guidelines supported by failure modes rules will contribute to a more accurate design. This design enhancement is performed at the element and at the system levels. To apply the reliability theory it was necessary to perform a statistical analysis of test results concerning relevant material properties. The optimization of the structure weight was performed using a two levels method. The types of structures studied were plates and shells using the layers angles and the layers thicknesses as design variables. Besides the safety constraints, based on material properties randomness, upper limits were imposed on global displacements. The strategy for the first level was to maximize the material efficiency and that of the second level was to reduce the layers thicknesses.The balanced solution between weight reduction and derived structural safety was tested on a plate and results were analysed and discussed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10