I am trying to calculate the buckling of a simply supported rectangular composite plate with a symmetric layup using the Ritz method following Mechanics of Composite Structures (Springer & Kollar, 2003).
The calculation is working perfectly for uniaxial and biaxial loading but the resulting eigenvalue is out by approxiamtely 10% for shear buckling even when considering 20 half waves in each axis.
Is there a mistake in the shear term of equation 4.117? I have calculated the parameters rmi, rnj etc, by substituting the applicable variables. For example rmi = (2m / (m^2 - i^2))(1/pi)
The calculation is working perfectly for uniaxial and biaxial loading but the resulting eigenvalue is out by approxiamtely 10% for shear buckling even when considering 20 half waves in each axis.
Is there a mistake in the shear term of equation 4.117? I have calculated the parameters rmi, rnj etc, by substituting the applicable variables. For example rmi = (2m / (m^2 - i^2))(1/pi)
