Prediction Method for Critical Buckling Pressure and Natural Frequency of Submerged Functionally Graded Cylindrical Shell
[1]LI Rong,YANG Meng,LIU Linxia,et al.Prediction Method for Critical Buckling Pressure and Natural Frequency of Submerged Functionally Graded Cylindrical Shell[J].Journal of Zhengzhou University (Engineering Science),2021,42(01):70-76.[doi:10.13705/j.issn.1671-6833.2020.03.009]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
42
Number of periods:
2021 01
Page number:
70-76
Column:
Public date:
2021-03-14
- Title:
- Prediction Method for Critical Buckling Pressure and Natural Frequency of Submerged Functionally Graded Cylindrical Shell
- Keywords:
- submerged functionally graded cylindrical shell; critical buckling pressure; natural frequency; hydrostatic pressure; prediction method
- CLC:
- TB535+.1
- Abstract:
- In order to overcome the lack of prediction method for the vibration of submerged functionally graded (FG) cylindrical shell, a prediction method for the critical buckling pressure and natural frequency of submerged FG cylindrical shell was presented. The coupled vibration characteristic equation of system was established based on the Flügge theory and wave propagation method. The data of natural frequencies under different hydrostatic pressures could be obtained by solving this equation. The results showed that the squared fundamental natural frequency of submerged FG cylindrical shell was linearly related to hydrostatic pressure. Based on this conclusion, the predicted values of critical buckling pressure could be obtained accurately by using three data values of natural frequencies. In addition, the data of natural frequency for FG cylindrical shell under any hydrostatic pressure could be easily got by using this linear fitting method. The calculation results indicated that the predicted results were consistent with the reference results. The validity and usefulness of the proposed method in engineering application were proved.
- References:
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Last Update:
2021-03-15