This study is concerned with stresses around a pin!loaded hole in symmetrically stacked composite laminates of _nite size using a two!dimensional direct boundary element method[ E}ects of friction and clearance between the pin and hole edge on the stresses are accounted for[ Also geometric compatibility and force constraint between the pin and the plate are enforced[ A new relation for geometric compatibility is proposed[ Stress distributions and the contact angle with slip and no!slip regions around the pin!loaded hole corresponding to various parameters are investigated[ Some interesting results are obtained[ The present method is e}ective and simple to use which can be implemented with a personal computer[ Γ 0887 Elsevier Science Ltd[ All rights reserved[ Keywords] Pin!loaded hole ^Composite laminates ^Stresses ^Contact angle ^Boundary element Nomenclature E 00 Young|s modules in the longitudinal direction E 11 Young|s modules in the transverse direction G 01 shear modules n 01 Poisson|s ratio t surface traction u displacement D hole diameter R hole radius a pin radius H thickness of the plate W width of the plate L length of the plate Corresponding author[ Fax ] 77531762917 ^e!mail ] cclinΓamath[nchu[edu[tw[
d 0 edge distance between the hole center and the plate edge A ij sti}ness constants F ij Green|s function for traction H ij Green|s function for displacement m coe.cient of static friction e clearance between the hole and the pin d pin displacement f polar angle with respect to the hole center c polar angle with respect to the pin center a one half of the total angle of contact b one half of the contact angle of no!slip regions u x \ u y displacement components of the hole!edge t x \ t y traction components of the hole!edge u r radial displacement of the hole!edge s r \ t rf radial stresses of the hole!edge