Failure analysis of a frangible composite cover: A transient-dynamics study
journal contributionposted on 10.03.2017, 13:48 by Deng'an Cai, Guangming Zhou, Yuan Qian, Vadim SilberschmidtVadim Silberschmidt
A transient-dynamics model based on the approximate Riemann algorithm is proposed for the failure analysis of a frangible composite canister cover. The frangible cover, manufactured with a traditional manual lay-up method, is designed to conduct a simulated missile launch test using a specially developed test device. Deformation of the cover’s centre is determined using a transient-dynamics finite element model; failure pressure for the frangible cover is obtained based on a failure criterion and compared with simulated experimental results. Weak-zone position of the frangible cover has a significant effect on failure pressure compared to that of deformation of the cover’s centre. With the same structure of the weak-zone, an increase in its height can first raise and then reduce the level of failure pressure of the frangible cover. Close agreements between the experimental and numerical results are observed.
This work was supported by the National Natural Science Foundation of China (Grant No. 11503093), the Fundamental Research Funds for the Central Universities, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and the Funding of Jiangsu Innovation Program for Graduate Education (Grant No. KYLX_0222).
- Mechanical, Electrical and Manufacturing Engineering