الفهرس 
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Abstract
The problem of stress concentration around plain and reinforced openings of a circular , square and rectangular shapes , together \vith openings of opposite equal-half- subjected to uniaxial tension t solutions may be classified for :
in shipbuilding practice and the approach to solution for stress concentration will depend on the size of each opening .
circular sides has been tackled. relative to the size of plate.
Such openings are appl~ied Considering only plates
1- plates with infinite length and breadth weakened by an opening.
2- plates with infinite length and finite breadth weakened by an opening. br>3- plates with finite length and breadth weakened by an opening.
For the first type of plates , the solution is confined to the application of conformal mapping technique together with Muskhelishvili’s method.
For the third TJPe of plates , the solution by stress function is only acceptable for ciroular openings. For other shapes of openings • no theoretical solution has been achieved , and the study of stress concentration is referred to experimental results obtained from ship or model readings. For the second type of plntes , solution mD0 be related to either solution of the first or ~hird ~~es , depending on the size of opening relative to the size of plate.
After a thorough review and discussion to the available literature on stress concentration around openings of different shapes , the thesis is classified to two main cha~ters related to plates with infinite length and breadth , and to plates with finite length and breadth , which are then followed by general oonelusion and suggestions for further work.
The thesis as presented io considered a further develol~ ment and exercise for current solutions to the problem of stress concentration around openings that are of interest to shipbuilders.