英语高手请HELPPlastic Interaction Relationships for Square Hollow

英语高手请HELP
Plastic Interaction Relationships for Square Hollow
Structural Sections: Lower Bound Solution
Magdi Mohareb, M.ASCE,1 and Istemi F. Ozkan2
Abstract: General interaction relationships for hollow structural square sections subjected to general combinations of normal force,
twisting moments, biaxial bending moments, and biaxial shearing forces are developed. The lower bound theorem of plasticity is
employed to obtain the fully plastic resistance of the section as determined by the maximum distortional energy density criterion.
Previously established interaction relationships for hollow structural sections subjected to bending moments, axial force, and twisting
moments are recovered as a special case of the general solution. The developments are expressed as universal, nondimensional relation-
ships suitable for limit state design. Consideration is given to the limits of applicability of the interaction relations. Simplifying assump-
tions are made and their effects are discussed. A stress resultant transformation scheme is developed in order to reduce the number of
interaction relations to be developed from 20 cases to only three fundamental cases.
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