FREE VIBRATION OF OPEN CIRCULAR CYLINDRICAL COMPOSITE SHELLS WITH POINT SUPPORTS

Composite shell panels have a wide range of application in the aerospace and automobile industries, where they are used as structural members in addition to their earlier role of encasing mechanical systems from external interference. A variational full-field method is presented in this paper for the free vibration analysis of open circular cylindrical laminated shells supported at discrete points. A differential equation in matrix form is developed using the first-order shear deformable theory of shells, and rotary inertia is included. The displacement fields are defined by using very high-order interpolating polynomials and a large number of preselected nodal points on the reference surface of the shell. Each nodal point has 5 degrees of freedom, three displacement components, and two components of the rotation of the normal to the reference surface. The stiffness and mass matrices are obtained using the strain and kinetic energy functions. The numerical results are calculated for shallow and deep circular cylindrical panels with four-, six-, and eight-point supports along the two parallel straight edges. The values of the natural frequency obtained from the present method show good agreement with published data in the literature.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08931321
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Singh, A V
  • Shen, L
• Publication Date: 2005-4

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 120-128
• Serial:
  • Journal of Aerospace Engineering
  • Volume: 18
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 0893-1321
  • EISSN: 1943-5525
  • Serial URL: http://ascelibrary.org/journal/jaeeez

Subject/Index Terms

• TRT Terms: Composite materials; Cylindrical bodies; Deformation; Laminates; Numerical analysis; Shells (Structural forms); Stiffness; Vibration
• Subject Areas: Aviation; Bridges and other structures; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00987597
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 30 2005 12:00AM