Reference: Flexible circular frames supported by a shell. Shear forces in a frame due to concentrated couples.

This entire document is available for individual purchase.

or unlock this entire document with a subscription to IHS ESDU

IHS ESDU includes a vast range of industry standard design tools presented in over 1500 design guides with supporting software. IHS ESDU design methods, best practices, data and software tools help solve complex Aerospace, Automotive, Mechanical, Structural and Process Engineering problems and enable better decision making during engineering design. With over 70 years of experience in providing engineers with the information, data and techniques needed to continually improve fundamental design and analysis, ESDU complements internal design practices, addresses gaps in information and provides access to best in class industry expertise.

  • Accelerate problem-solving and reduce design cycles by quickly finding solutions to technical challenges
  • Avoid re-inventing the wheel through broad-based access to cutting edge research
  • Minimize risk of product and project failures with a “single source of truth” for technical content across the enterprise and supply chain
  • Mitigate the impact of workforce transitions, and accelerate and expand skills of junior employees with a window into industry best practices
  • Reduce operating costs associated with research & development
For additional product information, visit the IHS ESDU page.

For more information or a custom quote, visit the IHS Contact Us page for regional contact information.
Year Published: 1952
Source: Esdu

ESDU Struct 03.06.12 provides a graph plotting the variation around the circumference of the frame of the ratio to the applied couple of the product of the shear force in the frame and the frame radius. A number of curves are presented, each for a particular value of the effective skin-frame stiffness ratio. That parameter, defined in the abstract for ESDU Struct 03.06.17, involves an effective frame spacing, the value of which may be found using ESDU Struct 03.06.17. The applied couple is assumed to act in the plane of the frame and to be balanced by tangential shear forces in the shell due to displacement of the frame as a whole and its deformation from a circular shape. The assumptions made in deriving the graph are summarised in ESDU Struct 03.06.00. A worked example illustrates the use of the data. For the distribution of shear forces in the frame due to a concentrated tangential load or a radial load, see ESDU Struct 03.06.13 or 14.