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Reliability and Sensitivity Analysis for Laminated Composite Plate Using Response Surface Method

반응면 기법을 이용한 복합재 평판의 신뢰도 및 민감도해석

  • Lee, Seokje (Department of Aerospace Engineering, Chungnam National University) ;
  • Jang, Moon-Ho (Mechanical Engineering R&D Lab, LIG Nex1) ;
  • Kim, Jae-Ki (Mechanical Engineering R&D Lab, LIG Nex1) ;
  • Moon, Jung-Won (Mechanical Engineering R&D Lab, LIG Nex1) ;
  • Kim, In-Gul (Department of Aerospace Engineering, Chungnam National University)
  • Received : 2012.07.16
  • Accepted : 2012.12.06
  • Published : 2013.04.01

Abstract

Advanced fiber-reinforced laminated composites are widely used in various fields of engineering to reduce weight. The material property of each ply is well known; specifically, it is known that ply is less reliable than metallic materials and very sensitive to the loading direction. Therefore, it is important to consider this uncertainty in the design of laminated composites. In this study, reliability analysis is conducted using COMSOL and MATLAB interactions for a laminated composite plate for the case in which the tip deflection is the design requirement and the material property is a random variable. Furthermore, the efficiency and accuracy of the approximation method is identified, and a probabilistic sensitivity analysis is conducted. As a result, we can prove the applicability of the advanced design method for the stabilizer of an underwater vehicle.

Keywords

Reliability Analysis;Most Probable Failure Point;Laminated Composite Plate;Response Surface Method;Probabilistic Sensitivity Analysis

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