Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink
In this study, we study the application of nonlinear energy sinks (NES) for targeted vibration energy transfer and absorption in aero-engine casings subjected to shock loads. A simplified single-degree-of-freedom model with an attached NES is characterized to understand the influence of control para...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2025-03-01
|
| Series: | Journal of Low Frequency Noise, Vibration and Active Control |
| Online Access: | https://doi.org/10.1177/14613484241279053 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850068550127976448 |
|---|---|
| author | Shen Liu Yingqun Ma Wei Zhao Long Hao Sujuan Bai Qingjun Zhao |
| author_facet | Shen Liu Yingqun Ma Wei Zhao Long Hao Sujuan Bai Qingjun Zhao |
| author_sort | Shen Liu |
| collection | DOAJ |
| description | In this study, we study the application of nonlinear energy sinks (NES) for targeted vibration energy transfer and absorption in aero-engine casings subjected to shock loads. A simplified single-degree-of-freedom model with an attached NES is characterized to understand the influence of control parameters such as damping and nonlinear stiffness on the NES. Using the complexification-averaging (CX-A) technique, we analyze the main dynamic characteristics of the vibration system, revealing nonlinear normal modes (NNM) and the energy localization phenomenon that enables targeted energy transfer. Then we establish a thin-walled casing model with an NES and calculate its vibration energy transfer under shock load. The results of this study are as follows: (1) NNMs are related to initial energy, with energy localization leading to targeted vibration energy transfer and dissipation; (2) NES operates optimally within a specific energy domain, exceeding this domain reduces its effectiveness, which is primarily influenced by the NES’s nonlinear stiffness; (3) Optimizing the NES’s nonlinear stiffness on the thin-walled casing achieves targeted shock energy transfer and dissipation, significantly reducing the casing’s vibration amplitude (from 0.008 m to 0.003 m, a 62.5% reduction) and stabilization time (from 0.007s to 0.002s, a 71% reduction). The study’s results are instructive for achieving rapid stabilization of aero-engine casings under shock excitation, providing insights into the mechanism of NES and the impact of damping and nonlinear stiffness on its performance. This research guides the optimized design of NES for thin-walled casings to effectively dissipate shock-induced vibrations. |
| format | Article |
| id | doaj-art-9a0fa33c0ec942c6bcaa6aa10699e823 |
| institution | DOAJ |
| issn | 1461-3484 2048-4046 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Low Frequency Noise, Vibration and Active Control |
| spelling | doaj-art-9a0fa33c0ec942c6bcaa6aa10699e8232025-08-20T02:48:02ZengSAGE PublishingJournal of Low Frequency Noise, Vibration and Active Control1461-34842048-40462025-03-014410.1177/14613484241279053Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sinkShen LiuYingqun MaWei ZhaoLong HaoSujuan BaiQingjun ZhaoIn this study, we study the application of nonlinear energy sinks (NES) for targeted vibration energy transfer and absorption in aero-engine casings subjected to shock loads. A simplified single-degree-of-freedom model with an attached NES is characterized to understand the influence of control parameters such as damping and nonlinear stiffness on the NES. Using the complexification-averaging (CX-A) technique, we analyze the main dynamic characteristics of the vibration system, revealing nonlinear normal modes (NNM) and the energy localization phenomenon that enables targeted energy transfer. Then we establish a thin-walled casing model with an NES and calculate its vibration energy transfer under shock load. The results of this study are as follows: (1) NNMs are related to initial energy, with energy localization leading to targeted vibration energy transfer and dissipation; (2) NES operates optimally within a specific energy domain, exceeding this domain reduces its effectiveness, which is primarily influenced by the NES’s nonlinear stiffness; (3) Optimizing the NES’s nonlinear stiffness on the thin-walled casing achieves targeted shock energy transfer and dissipation, significantly reducing the casing’s vibration amplitude (from 0.008 m to 0.003 m, a 62.5% reduction) and stabilization time (from 0.007s to 0.002s, a 71% reduction). The study’s results are instructive for achieving rapid stabilization of aero-engine casings under shock excitation, providing insights into the mechanism of NES and the impact of damping and nonlinear stiffness on its performance. This research guides the optimized design of NES for thin-walled casings to effectively dissipate shock-induced vibrations.https://doi.org/10.1177/14613484241279053 |
| spellingShingle | Shen Liu Yingqun Ma Wei Zhao Long Hao Sujuan Bai Qingjun Zhao Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink Journal of Low Frequency Noise, Vibration and Active Control |
| title | Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink |
| title_full | Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink |
| title_fullStr | Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink |
| title_full_unstemmed | Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink |
| title_short | Research on rapid stabilization of aero-engine casings subjected to shock loads using nonlinear energy sink |
| title_sort | research on rapid stabilization of aero engine casings subjected to shock loads using nonlinear energy sink |
| url | https://doi.org/10.1177/14613484241279053 |
| work_keys_str_mv | AT shenliu researchonrapidstabilizationofaeroenginecasingssubjectedtoshockloadsusingnonlinearenergysink AT yingqunma researchonrapidstabilizationofaeroenginecasingssubjectedtoshockloadsusingnonlinearenergysink AT weizhao researchonrapidstabilizationofaeroenginecasingssubjectedtoshockloadsusingnonlinearenergysink AT longhao researchonrapidstabilizationofaeroenginecasingssubjectedtoshockloadsusingnonlinearenergysink AT sujuanbai researchonrapidstabilizationofaeroenginecasingssubjectedtoshockloadsusingnonlinearenergysink AT qingjunzhao researchonrapidstabilizationofaeroenginecasingssubjectedtoshockloadsusingnonlinearenergysink |