The characteristic distance is fundamental data passed from HyperSizer to the BJSFM analysis routine. The characteristic distance is a lamina property that defines the distance from the free edge/bearing surface to apply typical failure strength criteria.
Important: The following section presents commonly used inputs for bolted joint analysis. These values are not a substitute for test-validated material data.
For composites, the characteristic distance is a function of the lamina material selection. A unique characteristic distance is available for tension (D0t) and compression (D0c) bypass loads. In HyperSizer, the characteristic distances are defined on the Joints and Holes tab of the Orthotropic Material form. Typical values for D0t = 0.016 and D0c = 0.02.
To account for variability in laminate stiffness, correction factors can be applied as a function of %45s, %0s, laminate thickness, and reference temperature.
See Also