| Summary: | 碩士 === 大葉大學 === 機械工程研究所 === 83 === This research is based on the multiple-layer approach,the
governing equations of a composite cylindrical shell in static
loading are formulated by using the principle of minimum total
potential energy. Since both the continuity conditions of
displacement and interlaminar shear stresses through the thick-
ness and on the surfaces are satisfied exactly by assumed
displacement fields,a valid stress field can be calculated
directly from the constitutive equations.A mixed single-layer
and multiple-layer approach using the generalized interlaminar
shear stress continuity theory in cylindrical coordinate is
presented in part one of this text. The colsed-form solutions
of some selected munerical examples show good accuracy for both
thick and thin laminated shells by comparing with elasticity
solutions.In part two of this text,a layer reduction technique
deriving from the generalized interlaminar shear stress
continu- ity is used in the analysis of composite shells.By
the results of the munerical examples studied,it is found that,
in spite of the munber of plies in the laminate,six
sublaminates used in this layer reduction analysis can give
the predicated stresses within 6% of accuracy.
|
|---|
