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plot the 2D curve that is a solution to a nonlinear equation

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Foad Sojoodi Farimani
关闭： John D'Errico 2021-3-3
I want to find the dimensions of a beam with a rectangular cross section
that has equal torsional and bending stifnesses. The bending stiffness is 1 / (E * Ix) and the torsional stiffness is 1 / (G * JT). Where
the equation can be expnaded to the nonlinear polinomial equation:
now assuming ν is 0.275, I want to find all the [h, w] points or curves satifying the above equation in [0, 2] and [0, 50] range for h and w respectively.

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darova
darova 2021-3-3
You can try contour3 to calcualte graphical solution

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