Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations

Dheeraj Tripathi; Sai Vishal; Chandan Bose; J. Venkatramani

doi:10.1007/978-3-030-81162-4_75

Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations

Dheeraj Tripathi, Sai Vishal, Chandan Bose, J. Venkatramani

Metallurgy and Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This chapter focuses on investigating the response characteristics of a coupled non-smooth nonlinear aeroelastic system subjected to randomly fluctuating inflow. The non-smoothness in the structure can be attributed to freeplay nonlinearity, and the aerodynamic loads are dictated by dynamic stall condition. Stochastic inflow gives rise to noise-induced intermittency (NII) in the nonlinear aeroelastic response as the mean speed is varied. In order to identify a stable bifurcation boundary ensuring structural safety, it is essential to understand the physical mechanism of NII near the transition boundaries. To that end, a qualitative stochastic bifurcation analysis on the transition route is carried out. Subsequently, the regimes that can impact the safety of aeroelastic operations are identified by computing the corresponding fatigue damage using rain-flow counting (RFC) algorithm. The fatigue damage analysis shows significant increase in damage value due to combined effect of coupled nonlinearities and stochastic inflow.

Original language	English
Title of host publication	Advances in Nonlinear Dynamics
Subtitle of host publication	Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021), Volume 1
Editors	Walter Lacarbonara, Balakumar Balachandran, Michael J. Leamy, Jun Ma, J. A. Tenreiro Machado, Gabor Stepan
Publisher	Springer
Pages	877-886
Number of pages	10
ISBN (Electronic)	9783030811624
ISBN (Print)	9783030811617, 9783030811648
DOIs	https://doi.org/10.1007/978-3-030-81162-4_75
Publication status	Published - 19 Mar 2022
Event	NODYCON 2021: Second International Nonlinear Dynamics Conference - online Duration: 16 Feb 2021 → 19 Feb 2021 https://nodycon.org/2021/

Publication series

Name	NODYCON Conference Proceedings Series
Publisher	Springer
ISSN (Print)	2730-7689
ISSN (Electronic)	2730-7697

Conference

Conference	NODYCON 2021
Abbreviated title	NODYCON 2021
Period	16/02/21 → 19/02/21
Internet address	https://nodycon.org/2021/

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10.1007/978-3-030-81162-4_75Licence: None: All rights reserved

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Tripathi, D., Vishal, S., Bose, C., & Venkatramani, J. (2022). Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations. In W. Lacarbonara, B. Balachandran, M. J. Leamy, J. Ma, J. A. Tenreiro Machado, & G. Stepan (Eds.), Advances in Nonlinear Dynamics: Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021), Volume 1 (pp. 877-886). (NODYCON Conference Proceedings Series). Springer. https://doi.org/10.1007/978-3-030-81162-4_75

Tripathi, Dheeraj ; Vishal, Sai ; Bose, Chandan et al. / Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations. Advances in Nonlinear Dynamics: Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021), Volume 1. editor / Walter Lacarbonara ; Balakumar Balachandran ; Michael J. Leamy ; Jun Ma ; J. A. Tenreiro Machado ; Gabor Stepan. Springer, 2022. pp. 877-886 (NODYCON Conference Proceedings Series).

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title = "Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations",

abstract = "This chapter focuses on investigating the response characteristics of a coupled non-smooth nonlinear aeroelastic system subjected to randomly fluctuating inflow. The non-smoothness in the structure can be attributed to freeplay nonlinearity, and the aerodynamic loads are dictated by dynamic stall condition. Stochastic inflow gives rise to noise-induced intermittency (NII) in the nonlinear aeroelastic response as the mean speed is varied. In order to identify a stable bifurcation boundary ensuring structural safety, it is essential to understand the physical mechanism of NII near the transition boundaries. To that end, a qualitative stochastic bifurcation analysis on the transition route is carried out. Subsequently, the regimes that can impact the safety of aeroelastic operations are identified by computing the corresponding fatigue damage using rain-flow counting (RFC) algorithm. The fatigue damage analysis shows significant increase in damage value due to combined effect of coupled nonlinearities and stochastic inflow.",

author = "Dheeraj Tripathi and Sai Vishal and Chandan Bose and J. Venkatramani",

year = "2022",

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booktitle = "Advances in Nonlinear Dynamics",

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Tripathi, D, Vishal, S, Bose, C & Venkatramani, J 2022, Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations. in W Lacarbonara, B Balachandran, MJ Leamy, J Ma, JA Tenreiro Machado & G Stepan (eds), Advances in Nonlinear Dynamics: Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021), Volume 1. NODYCON Conference Proceedings Series, Springer, pp. 877-886, NODYCON 2021, 16/02/21. https://doi.org/10.1007/978-3-030-81162-4_75

Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations. / Tripathi, Dheeraj; Vishal, Sai; Bose, Chandan et al.
Advances in Nonlinear Dynamics: Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021), Volume 1. ed. / Walter Lacarbonara; Balakumar Balachandran; Michael J. Leamy; Jun Ma; J. A. Tenreiro Machado; Gabor Stepan. Springer, 2022. p. 877-886 (NODYCON Conference Proceedings Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations

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AU - Bose, Chandan

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PY - 2022/3/19

Y1 - 2022/3/19

N2 - This chapter focuses on investigating the response characteristics of a coupled non-smooth nonlinear aeroelastic system subjected to randomly fluctuating inflow. The non-smoothness in the structure can be attributed to freeplay nonlinearity, and the aerodynamic loads are dictated by dynamic stall condition. Stochastic inflow gives rise to noise-induced intermittency (NII) in the nonlinear aeroelastic response as the mean speed is varied. In order to identify a stable bifurcation boundary ensuring structural safety, it is essential to understand the physical mechanism of NII near the transition boundaries. To that end, a qualitative stochastic bifurcation analysis on the transition route is carried out. Subsequently, the regimes that can impact the safety of aeroelastic operations are identified by computing the corresponding fatigue damage using rain-flow counting (RFC) algorithm. The fatigue damage analysis shows significant increase in damage value due to combined effect of coupled nonlinearities and stochastic inflow.

AB - This chapter focuses on investigating the response characteristics of a coupled non-smooth nonlinear aeroelastic system subjected to randomly fluctuating inflow. The non-smoothness in the structure can be attributed to freeplay nonlinearity, and the aerodynamic loads are dictated by dynamic stall condition. Stochastic inflow gives rise to noise-induced intermittency (NII) in the nonlinear aeroelastic response as the mean speed is varied. In order to identify a stable bifurcation boundary ensuring structural safety, it is essential to understand the physical mechanism of NII near the transition boundaries. To that end, a qualitative stochastic bifurcation analysis on the transition route is carried out. Subsequently, the regimes that can impact the safety of aeroelastic operations are identified by computing the corresponding fatigue damage using rain-flow counting (RFC) algorithm. The fatigue damage analysis shows significant increase in damage value due to combined effect of coupled nonlinearities and stochastic inflow.

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Tripathi D, Vishal S, Bose C, Venkatramani J. Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations. In Lacarbonara W, Balachandran B, Leamy MJ, Ma J, Tenreiro Machado JA, Stepan G, editors, Advances in Nonlinear Dynamics: Proceedings of the Second International Nonlinear Dynamics Conference (NODYCON 2021), Volume 1. Springer. 2022. p. 877-886. (NODYCON Conference Proceedings Series). Epub 2021 Jul 19. doi: 10.1007/978-3-030-81162-4_75

Response Analysis of Coupled Non-Smooth Nonlinear Aeroelastic System Subjected to Stochastic Input Fluctuations

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