A study on the vibration and buckling analyses of laminated composite plates is described in this paper. In order to carry out the analyses of laminated composite plates, a NURBS-based isogeometric general plate element based on Reissner-Mindlin (RM) theory is developed. The non-uniform rational B-spline (NURBS) is used to represent the geometry of plate and the unknown displacement field and therefore, all terms required in this element formulation are consistently derived by using NURBS basis function. Numerical examples are conducted to investigate the accuracy and reliability of the present plate element. From numerical results, the present plate element can produce the isogeometric solutions with sufficient accuracy. Finally, the present isogeometric solutions are provided as future reference solutions.

 Abstract  1. 서 론  2. 기하하적 모델의 정의   2.1 노트벡터(Knot vector)   2.2 기저함수   2.3 NURBS곡면  3. RM 적층판이론   3.1 변위장   3.2 변형률의 정의   3.3 응력-변형률의 정의   3.4 힘의 정의  4. 등기하 판요소의 정식화   4.1 등기하요소에 대한 변위장   4.2 변형률-변위 관계 행렬   4.3 자유진동해석의 정식화   4.4 선형좌굴해석의 정식화  5. 수치예제   5.1

• 김하룡(경상대학교 계산역학연구실, 특임연구원, 공학박사) | Kim, Ha-Ryong
• 이상진( 경상대학교 건축공학과 교수, PhD) | 이상진