The calculation of energy dissipation in fasteming zone of the landing gear strut at dynamic analysis of aircraft landing

2005 ◽  
Author(s):  
R.E. Lamper ◽  
EN. Mazutskaj
Keyword(s):  
Energy Dissipation ◽  
Dynamic Analysis ◽  
Landing Gear ◽  
Aircraft Landing

Dynamic modeling of aircraft landing gear and multi-objective optimization with simple cell mapping method

2019 ◽  
Vol 43 (1) ◽  
pp. 80-91
Author(s):  
Wei-Guo Wu ◽  
Fu-Rui Xiong ◽  
Jian-Qiao Sun ◽  
Yong-Gang Leng
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Characteristics ◽  
Optimal Parameter ◽  
Landing Gear ◽  
Multi Objective Optimization ◽  
Cell Mapping ◽  
Multi Objective ◽  
Aircraft Landing ◽  
Simple Cell Mapping ◽  
Aircraft Landing Gear

To study the dynamic characteristics of aircraft landing gear and carry out successive optimizations, a mathematical model of flexible landing gear is established by the Hamiltonian principle. The dynamic model includes a tire force estimation derived from the impact model. Dynamic analysis with the flexible model is then conducted. Stress distribution is obtained from the dynamic analysis, which can be used for fatigue analysis, optimization design, etc. To achieve better dynamic characteristics in terms of vibration reduction, a multi-objective optimization problem is formulated and solved via a simple cell mapping algorithm. Optimal simulations indicate the quality of optimal structural designs. Compared with the baseline structure, candidate optimal designs can improve dynamic performance of fuselage vibration suppression, shock absorber efficiency, and stress settling time. The proposed multi-objective optimal parameter design provides a fast tuning procedure that saves considerable time compared to finite element method-based optimization. In addition, the optimal parameter set provides useful interface information for detailed landing gear structural modeling that serves other analysis purposes.

scholarly journals 1002 Aerodynamic noise reduction for aircraft landing gear

2009 ◽  
Vol 2009 (0) ◽  
pp. 321-322
Author(s):  
Kazuhide Isotani ◽  
Kenji Hayama ◽  
Akio Ochi ◽  
Toshiyuki Kumada
Keyword(s):  
Noise Reduction ◽  
Landing Gear ◽  
Aerodynamic Noise ◽  
Aircraft Landing ◽  
Aircraft Landing Gear

Reduction of Aircraft Tyre Wear by Pre-Rotating Wheel Using ANSYS Mechanical Transient

2016 ◽  
Vol 17 ◽  
pp. 89-100 ◽  
Author(s):  
Abdurrhman A. Alroqi ◽  
Wei Ji Wang
Keyword(s):  
Landing Gear ◽  
Slip Ratio ◽  
Aircraft Landing ◽  
Tyre Wear

Heavy aircraft main landing gear tyres skid immediately after touchdown as result of the high slip ratio between the tyres and runway, which lead to tyre wear and smoke. In this paper, the tyre wear is modelled on the Archard theory using ANSYS mechanical transient, to reveal the wheel’s dynamic and the tyre tread wear. The wheel’s dynamic and the amount of wear are calculated for initially static and for pre-spun wheels in order to find the effectiveness of the technique of pre-spinning the wheel, as suggested by many patents since the early days of airplane use, in order to eliminate aircraft landing wear and smoke.

Nonlinear Transient Analysis of Aircraft Landing Gear Brake Whirl and Squeal

1995 ◽  
Author(s):  
Matt H. Travis
Keyword(s):  
Finite Element ◽  
Transient Analysis ◽  
Landing Gear ◽  
Friction Modeling ◽  
Explicit Integration ◽  
Aircraft Landing ◽  
Aircraft Landing Gear ◽  
Nonlinear Transient ◽  
Element Approach ◽  
Stiffness And Damping

Abstract The feasibility of computing non-linear transient finite element simulations of aircraft landing gear brake whirl and squeal is demonstrated and discussed. Methodology to conduct the high frequency brake transient analysis is developed using an explicit integration finite element approach. Results indicate the approach has the capability to simulate brake dynamic behavior in dynamometer and aircraft landing gear installations — thus enabling evaluation of modifications to braking systems that lead to more stable and robust designs. A simple multi-disk brake model is developed and described. Modeling techniques for including the dynamometer road wheel and runway in the simulations are given. Issues such as piston housing hydraulic fluid stiffness and damping effects, and parametric friction modeling are discussed.

Study on Magneto-rheological Damper Control of Aircraft Landing Gear Based on LADRC

2021 ◽  
pp. 830-840
Author(s):  
Lei Dong ◽  
Zengqiang Chen ◽  
Mingwei Sun ◽  
Qinglin Sun ◽  
ZhenPing Yu
Keyword(s):  
Landing Gear ◽  
Aircraft Landing ◽  
Aircraft Landing Gear ◽  
Damper Control ◽  
Magneto Rheological
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