A thin-walled filament-wound composite pressure vessel has fibres wound at a helical angle ?, as shown below. Ignore the resin matrix material and assume that the fibres carry the entire load. Also assume that the fibres are all uniformly stressed in tension. This gross oversimplification is the basis of the socalled “netting analysis” which is actually more appropriate for stress analysis of all-fibre textile fabrics. Using this simplified analysis, show that the angle ? must be 54.74° in order to support both the hoop (tangential) and axial stresses that are generated in a thin-walled pressure vessel. 

Transcribed Image Text:

X C X C

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Consider internal fibres at wrap angle of 0 an allowable fibie strength of of and thinkne to C... View the full answer