Strength Analysis of A Frangible Laminated Composite Canister Cover
|Keywords:||複合材料;有限單元法;脹破式端蓋;強度分析;破壞分析;Laminated composite materials;Finite element method;Frangible cover;Strength analysis;Failure analysis;Structure|
The concepts of designing a frangible laminated composite canister cover are elaborated. The frangible canister cover is designed in such a way that its static external failure pressure is much higher than its static internal failure pressure and it will fail in a predetermined pattern when subjected to an impulsive internal pressure. The frangible canister cover is a convex shell structure and it is fabricated using four plate-like laminated composite parts with bound adhesively. The stress distribution in the canister cover is determined using the finite element method and the failure of the cover identified on the basis of an appropriate failure criterion. A number of laminated composite canister covers were fabricated and subject to static internal pressure, static external pressure and dynamic internal pressure testings. The failure modes of the frangible covers are studied and the experimental results used to verify the theoretical predictions. Close agreements between the experimental and theoretical results have been observed. The present study shows that the design of highly reliable frangible covers can be achieved.
|Appears in Collections:||Thesis|