ABSTRACT

This chapter discusses some limitations on classical laminated plate theory which involved the neglect of transverse shear deformation. Another classical problem which represents a limitation on laminated plate theory is the so-called "free-edge effect." The chapter presents an illustration of how a higher order laminated plate theory can be utilized to address this issue. The approach requires the derivation of a higher order plate theory which includes a thickness-stretch mode in addition to shear deformation. The chapter shows that the stress distribution near the free-edge of a laminate is three-dimensional in nature. The qualitative nature of free-edge stresses as well as the documented failure associated with interlaminar peel stresses have been presented by Pagano and Pipes. The procedure requires the use of a higher order laminated plate theory which includes a thickness-stretch displacement mode in addition to transverse shear deformation.