Tensile Buckling of Orthotropic Thin Plate with Open Hole

The composite plates with open hole under tensile load areone of the most important components for behavioral studyof composite materials which are known as OHT plates.These structures can be used in composite aircraft joints too.The buckling behavior of these plates under tension wererarely considered.Before failure caused by hole the resultant stressconcentration of the plate may suffer local buckling aroundthe hole if the plate is thin. In this article assuming the plateis thin, buckling behavior under tension loading isinvestigated. This behavior in isotropic thin plate isinvestigated and post buckling response is presented. Theeffective parameters of this phenomenon in compositessuch as layup, thickness, hole diameter and plate size isevaluated and presented using finite element method. Basestate stress in this plates have major role to creatingbuckling and buckling mode shape. Studies show that theplate bending stiffness components will affect the bucklingcritical load directly while the hole diameter will affect itinversely. Results obtained for isotropic and orthotropicmaterial have good agreement with literatures.

کلیدواژه ها:

tensile buckling ، composite plate ، finiteelement method