Analysis of Lap Region between Skirt and Composite Case under Axial Force in Solid Rocket Motor
To study load carrying capacity for Lap Region between the Skirt and Composite Case(LRSC) of the solid rocket motor(SRM),made the stress of layer out of skirt as the research object, established the two-dimensional axisymmetric finite element model for compsite case,analysed the main factor(lap length) for carrying capacity of LRSC,and verified the conclusions by calculation.Optimized the lap length ranged from 40mm to 60mm, proposed model of the optimal lap length and optimization method,calculated optimal lap length under different axial loads.The results show that, with the increase of lap length of skirt, the load bearing capacity of LRSC enhances first and depresses then,exists a great value,which of the corresponding lap length is optimal;With the increase of axial load,optimal lap length monotonously will increase.
Dongye Sun, Wen-Pei Sung and Ran Chen
H. C. Liu et al., "Analysis of Lap Region between Skirt and Composite Case under Axial Force in Solid Rocket Motor", Applied Mechanics and Materials, Vols. 71-78, pp. 4357-4360, 2011