JM

J.R. Mackay

9 records found

Authored

The effect of corrosion damage on overall collapse strength of submarine pressure hulls was studied experimentally. Ring-stiffened cylinders were machined from aluminium tubing and loaded to collapse under external pressure. In selected specimens, some of the outer shell material ...
A framework for the design of submarine pressure hulls using nonlinear finite element (FE) analysis is presented in order to improve upon the conventional analytical-empirical design procedure. A numerical methodology is established that allows the collapse pressure of a hull to ...
An overview of current design practices for submarine pressure hulls is presented, along with the results of a survey of the literature that was conducted to determine standard nonlinear numerical modelling practices for those structures. The accuracies of the conventional submar ...
Nonlinear finite element (FE) collapse pressure predictions are compared to experimental results for submarine pressure hull test specimens with and without artificial corrosion and tested to collapse under external hydrostatic pressure. The accuracy of FE models, and their sensi ...
A submarine may have to operate for a period of time with local corrosion damage in the pressure hull if a suitable repair method is unavailable or too expensive for implementation. This paper describes collapse tests on twenty ring-stiffened aluminium cylinders, which were condu ...
A review of conventional testing methods for applying external hydrostatic pressure to buckling-critical shells is presented. A new "volume-control" pressure testing method, aimed at preventing catastrophic specimen failures and improving control of specimen deformation near the ...
This paper presents experimental investigations into the mechanics of collapse for externally loaded pressure vessels with simulated corrosion damage.@en