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  1. FJCV

    axial stress for an unsymmetrical section loaded by Mx, My and Mz.

    Dear fellow engineers, I am looking for a closed form solution for the axial stress Sx for an unsymmetrical cross section loaded by Mx, My and Mz. I expect it will be a more generic equation than the equation for the special case for when Mx=0 as shown in the attached figure. Thank you for...
  2. FJCV

    Citation Request for "St. Mech. Note 15. Short wave Buckling of Stiffened Sheet"

    Dear Engineers, The Grumman Structures Manual (page B6.11.2-7) shows attached figure 4, with the title "Short wave Buckling of Stiffened Sheet" and refers to "St. Mech. Note 15.". Does anybody know the full citation for this reference? I like to buy a copy. Thx. Grumman Structures Manual...
  3. FJCV

    Citation Request for "St. Mech. Note 15. Short wave Buckling of Stiffened Sheet"

    Dear Engineers, The Grumman Structures Manual (page B6.11.2-7) shows attached figure 4, with the title "Short wave Buckling of Stiffened Sheet" and refers to "St. Mech. Note 15.". Does anybody know the full citation for this reference? I like to buy a copy. Thx. Grumman Structures Manual...
  4. FJCV

    Wrinkling Stability Criterion Equation

    Dear Fellow Engineers, NACA-TN-3431 shows on page 9 equation 5 the stability criterion for a plate to fail in short wave failure mode (aka. skin wrinkling failure). Mentioned NACA Technical Note refers for this equation to Timoshenko's 1936 book "Theory of Elastic Stability" and states that the...
  5. FJCV

    Shear Center of a J section

    Dear fellow engineers, I am requesting your help figuring out the best way to calculate the shear center of an unsymmetrical cross section as shown in the attachment. I am familiar with the theoretical solutions of Timoshenko for cross sections with at least one axis of symmetry. I appreciate...

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