Modelling and analysis of multi-ply torispheres draped from woven carbon fabric

This paper provides details about an algorithm predicting orientation of fibres in woven fabric being draped onto domes with torispherical geometry. Two positions of the drape focal point are examined, i.e. one positioned at the apex and the second one moved away from the apex. The algorithms’ predictions of fibre orientation compare well with the measured values. The wall thickness variation and near net-shape of initial cloth could also be obtained using the described algorithm. Two eighteen-ply and two fifty-ply torispheres were manufactured and collapsed under static external pressure. The collapse pressures were in the range of 6–25 MPa. Comparison of numerically predicted Last Ply Failure pressures with the experimental results is good. References to other work where further details can be found are also provided in this paper.