BLADE STRESS CALCULATIONS -- MODE DEFLECTION VS. FORCE INTEGRATION

Two methods for calculating blade stresses from aeroelastic responses, mode deflection and force integration are described and compared with respect to accuracy and ease of operational usage. Analytic results are presented for a realistic bearingless helicopter rotor configuration which is capable of experiencing concentrated shears and moments at discrete spanwise points on the blade. It is generally concluded that, when properly implemented, the force integration method yields more reliably accurate stress calculations than the mode deflection method.

  • Corporate Authors:

    American Helicopter Society

    30 East 42nd Street
    New York, NY  United States  10017
  • Authors:
    • Bielawa, R L
  • Publication Date: 1978-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00188627
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM