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| Accurate buckling analysis of natural fiber reinforced conical shell under effects of hygroscopic aging |
| Received:September 10, 2023 Revised:December 16, 2023 |
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| DOI：10.7511/jslx20230910001 |
| KeyWord:conical shell buckling natural fiber reinforced material hygrothermal aging |
| Author | Institution |
| 张俊霖 |
大连理工大学 力学与航空航天学院 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 聂雪阳 |
大连理工大学 力学与航空航天学院 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 王雅静 |
大连理工大学 力学与航空航天学院 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 苏新 |
大连理工大学 力学与航空航天学院 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 周震寰 |
大连理工大学 力学与航空航天学院 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
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| Abstract: |
| Natural fiber-reinforced materials (NFRC) will inevitably show hygroscopic aging behavior in a humid environment,which seriously affects the stability of such materials and structures.To solve this issue,an accurate method for buckling of NFRC truncated conical shells is proposed in this paper by introducing the nonlinear pre- buckling effect.Firstly,the buckling governing equations of NFRC conical shells are derived based on Donnell shell theory.Secondly,the Galerkin method is employed to determine the nonlinear axisymmetric pre-buckling deformation.On this basis,accurate critical buckling loads and analytical buckling modes are obtained.Finally,the accuracy of the proposed method is verified by comparing with reference solutions and numerical simulations.The effects of hygroscopic aging effects on buckling behaviors of NFRC truncated conical shells are discussed.The presented results provide a theoretical basis for the anti-buckling design of NFRC truncated conical shells. |
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