Reference Stress and Proportional Limit

The following analysis calculates the compressive reference stresses at secant Moduli .7 E_c and .7 G. The proportional limits for compression and shear are also calculated.

• Used to calculate inelastic buckling corrections from nondimensional figures
• Proportional limit is used to differentiate elastic and inelastic buckling so that corrections can be made

Material Properties Input

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Units: English / Metric

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Compression Material Allowables

Compression Modulus - E_c:
Compression Yield - F_cy:
Ramberg-Osgood Number - n:

Shear Material Allowables

Shear Modulus - G:
Shear Yield - F_sy:
Shear Ramberg-Osgood Number - n_s:

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References

MMPDS-05 (2010). Metallic Materials Properties Development and Standardization (MMPDS).

Bruhn, E. F. (1973). Analysis and Design of Flight Vehicle Structures. Indianaponlis, IN.

Peery, D. J. (1950). Aircraft Structures. New York, NY.

Timoshenko, S. P. (1961). Theory of Elastic Stability. New York, NY.

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