Seminar - Jurgen Becque - The Plastic Buckling Paradox
Wednesday 24 September 2008, 1.10 - 1.55 pm
Civil Engineering Lecture Theatre 3
Plastic flow theory is generally considered superior to plastic deformation theory. Nevertheless, plastic flow theory fails to match experimental data in a number of inelastic buckling problems, such as local buckling of plates and torsional buckling of columns, yielding far less reliable results in these cases than the plastic deformation theory. After discussing the principles of plastic flow theory, the seminar will try to shed some light on this ‘Plastic Buckling Paradox’ and will proposes a solution to the problem, which hinges on the determination of the plastic shear stiffness.