The dynamic response of aircraft landing gear at the moment of landing with regard to smart fluid dampers content MR

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

Nima Tabari ¹ , Saeed Mahdiyeh Borojeni ²

1 - Department of Mechanical Engineering, Dashtestan Branch, Islamic Azad University, Boushehr, Iran
2 - Department of Mechanical Engineering, College of Mechanical Engineering, Dashtestan branch, Islamic Azad University, Borazjan, Iran

Received: 2019-07-12 Accepted : 2019-09-01 Published : 2021-02-01

Keywords: landing gear, bumpers hydro pneumatic, fluid MR, semi-active damping, dynamic plane,

Abstract :

Dynamics and vibrations of the aircraft at the moment of impact with the ground is an important issue in aircraft design and its suspension systems. Different models for spring and damper have been used in the design of aircraft. One of the innovative ideas is MR Fluid Technology in its design. These shock absorbers are actually created a semi-active control system which by setting a magnetic field, the viscosity of the fluid can be adjusted and led to the desired damper so that the vibrations of the aircraft at the moment of landing reach the minimum amount. To achieve this purpose in the present study at First, a passive shock absorber is modeled and then an MR shock absorber which could provide the necessities of a landing gear system, have been analyzed. Finally, after writing the differential equations, the vibrational charts of the passive mode with semi active have been compared and the results confirmed and confirmed.

References:

[1] Currey, N. S. (1988). Aircraft landing gear design: principles and practices. Aiaa.

[2] Batterbee, D. C., Sims, N. D., Stanway, R., & Wolejsza, Z. (2007). Magnetorheological landing gear: 1. A design methodology. Smart materials and Structures, 16(6), 2429.

[3] Lindler, J. E., Dimock, G. A., & Wereley, N. M. (2000, June). Design of a magnetorheological automotive shock absorber. In Smart Structures and Materials 2000: Smart Structures and Integrated Systems (Vol. 3985, pp. 426-437). International Society for Optics and Photonics.

[4] Carlson, J. D. (2001). Smart Prosthetics Based on MR Fluids. In Proc. 8^th Ann. symposium On Smart Structure And Mat. SPIE.

[5] Yang, G., Spencer Jr, B. F., Carlson, J. D., & Sain, M. K. (2002). Large-scale MR fluid dampers: modeling and dynamic performance considerations. Engineering structures, 24(3), 309-323.

[6] Ahmadian, M., & Norris, J. A. (2008). Experimental analysis of magnetorheological dampers when subjected to impact and shock loading. Communications in Nonlinear Science and Numerical Simulation, 13(9), 1978-1985.

[7] Mikułowski, G. (2008). Adaptive impact absorbers based on magnetorheological fluids. IPPT PAN.

[8] Wereley, N. M., Cho, J. U., Choi, Y. T., & Choi, S. B. (2007). Magnetorheological dampers in shear mode. Smart Materials and Structures, 17(1), 015022.

[9] Abu-Ein, S. Q., Fayyad, S. M., Momani, W., Al-Alawin, A., & Momani, M. (2010). Experimental investigation of using MR fluids in automobiles suspension systems. Research Journal of Applied Sciences, Engineering and Technology, 2(2), 159-163.

[10] Choi, Y. T., & Wereley, N. M. (2003). Vibration control of a landing gear system featuring electrorheological/magnetorheological fluids. Journal of aircraft, 40(3), 432-439.

[11] Khani, M. (2010). Magneto-rheological (MR) damper for landing gear system (Doctoral dissertation, Concordia University).