Out of Plane Bending Stiffness of Rectangular Hollow Section T-joint of Unequal Width (Under Out of Plane Bending Conditions)

摘要

Stiffness is an important matter of concern, especially in automobile frame structure. When structure is made from hollow section beams, local deformation at jointed area reduces the stiffness remarkably. Local stiffness of T-joint of rectangular hollow section member of unequal width were studied under out of plane bending conditions. Three different analytical solutions were derived for chord tube flange distortion. The solutions were checked by FEM, in various branch size, shape and thickness of chord tube web, and also checked by experiments of welded T-joint made of aluminum extrusions.