Multi-physics based Simulations of a Shock Absorber Sub-system for PHM
The multi-physics involve Mechanical, Thermal, Hydraulic, and Pneumatic based modeling and simulation of an oleo-pneumatic shock absorber with fault capabilities presented in this paper. The fault simulated in this model is leakage due to eccentricity. The one-dimensional shock absorber system models render loads at different sink velocities. These load values, used in the structural model to do static stress analysis. By using these loads directly from the system model eliminates the error in load computation from the loads group, thereby eliminating the time and cost involved in this activity. The models and static stress analyses are done with both 1-D and 3-D elements. The 3-D landing gear model meshed with using both auto and manual mesh generation options. The consequences of both 1-D, and 3-D models mesh generation are discussed in this paper. The static stress analysis, compared with the experimental results and it is found that the results are within 5% deviation. Based on the static stress analysis computed the life of a landing gear.
How to Cite
structural analysis, Shock absorber, Fault model, Hydraulic leakage, Co-simulation
Milwitzky B, and Cook F E, (1952) Analysis of Landing-gear behavior, NACA TN 2755, Washington D C.
James N D, (1996) A Method for Landing Gear Modeling and Simulation with Experimental validation, NASA Contractor Report 201601, June 1996.
Edward B, Abhinav S, Sriram N, Indranil R, and Kai G, (2011) Experimental Validation of a Prognostic Health Management System for Electro-Mechanical Actuators, Infotech@Aerospace, 29-31 March 2011, AIAA 2011-1518.
Kai Goebel, George Vachtsevanos and Marcos E. Orchard, in Chapter 4: Prognostics of Integrated Vehicle Health Management the Technology, 2013 SAE international http://books.sae.org ISBN 978-0-7680-7952-4, edited by Ian K. Jennions.
Eker O F, Camci F, and Jennions I K (2012) Major Challenges in Prognostics: Study on Benchmarking Prognostics Datasets, European Conference of Prognostics and Health Management Society 2012.
J. Lee, Fangji Wu, Wenyu Zhao, Masoud Ghaffari, Linxia Liao, David Siegel (2013), Prognostics and health management design for rotary machinery systems — Reviews, methodology and applications, Mech. Syst. Signal Process. http://dx.doi.org/10.1016/j. ymssp.2013.06.004.
Federal Aviation Regulations (FAR) part 25, Airworthiness Standards Transport Category Airplanes, May 2009 Edition.
Krishna Lok Singh, Pulak Chakrabarti, Satish Chandra, Report on Computation of NLG and MLG Landing Loads, NCAD/DQ-04/0005/2012, 21March 2012.
Cai-Jun X, Yu H, Wen-Gang Q, and Jian-Hua D, (2012) Landing-Gear Drop-Test Rig Development and Application for Light Airplanes, Journal of Aircraft, Vol. 49, No. 6, November-December 2012, DOI: 10.2514/1.C031913
Krishna Lok S and Abdul Waheed A (2014), Stress and Fatigue Damage Computation of a Nose Landing Gear, Int. J. Fracture & Damage Mechanics 1-10, Journal Pub, vol. 2 Issue 1.
The Prognostic and Health Management Society advocates open-access to scientific data and uses a Creative Commons license for publishing and distributing any papers. A Creative Commons license does not relinquish the author’s copyright; rather it allows them to share some of their rights with any member of the public under certain conditions whilst enjoying full legal protection. By submitting an article to the International Conference of the Prognostics and Health Management Society, the authors agree to be bound by the associated terms and conditions including the following:
As the author, you retain the copyright to your Work. By submitting your Work, you are granting anybody the right to copy, distribute and transmit your Work and to adapt your Work with proper attribution under the terms of the Creative Commons Attribution 3.0 United States license. You assign rights to the Prognostics and Health Management Society to publish and disseminate your Work through electronic and print media if it is accepted for publication. A license note citing the Creative Commons Attribution 3.0 United States License as shown below needs to be placed in the footnote on the first page of the article.
First Author et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 United States License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.