Scale Models for Laminated Cylindrical Shells Subjected to Axial Compression

Author:
, , ,
Year
: 1996
Abstract: This study investigates problems associated with the design of scaled down

models. Such study is important since it provides the necessary scaling laws,

and the factors which affect the accuracy of the scale models. For better

understanding the applicability of scaled down models in designing

laminated composite structures, an analytical investigation was undertaken

to assess the feasibility of their use. Employment of similitude theory to

establish similarity among structurai systems can save considerable expense

and time, provided that the proper scaling laws are found and validated. In

this study the limitation and acceptable interval of all parameters and

corresponding scale factors are investigated. Particular emphasis is placed

on the case of buckling of cross-ply cylindrical shells under uniaxial

compressive loads. Both complete and partial similarity are discussed. This

analytical study indicates that distorted models with a different number of

layers and geometries than those of the prototype can predict the behavior

of the prototype with good accuracy. However, it is shown that a scaled

down model with different material properties than those of the prototype

is incapable of predicting the response of the prototype.
Keyword(s): Scale Model,Laminated,Cylindrical Shells,Axial Compression
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