Methods are available for minimizing the wall thickness of multi-component compound cylinders subjected to high internal pressures. In all cases it is assumed that the optimum design is that which gives simultaneous yielding of all components when the cylinder is at maximum pressure.
The present paper describes a graphical construction which makes it relatively easy to decide what modifications to make to these optimum designs to avoid reversed yielding and fatigue cracking. The construction is particularly useful when the liner and support cylinders have different elastic constants and yield strengths; this aspect is illustrated. Factors affecting the yield, fatigue and bursting strength of compound cylinders are discussed.
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