In this study, the random material parameter, especially the Poisson's ratio is taken into account in the stochastic finite element formulation for composite laminate plate. Since the parameter is embedded into the constitutive relation in the fraction form, direct consideration of the parameter in the formulation is not ease. In order to overcome this difficulty, we applied the Taylor's expansion to the fraction form to obtain a series expansion in ascending order of stochastic field function. With this, the formulation that considers the randomness in the Poisson's ratio is established. The adequacy of the proposed formulation is observed by means of Monte Carlo simulation.

ABSTRACT
 1. 서 론
 2. 임의성의 표현
 3. 요소강성행렬과 변위의 공분산
  3.1 합응력행렬
  3.2 변위의 공분산
 4. 예제해석 및 결론
 참고 문헌

• 노혁천(세종대학교 토목환경공학과) | Noh Hyuk-Chun