Aircraft mooring scheme evaluation method based on multi-body model

Abstract

An aircraft mooring scheme evaluation method based on a multi-body model comprises the steps that firstly, a full aircraft mooring load calculation model comprising an aircraft structure model, an undercarriage system model and a steel cable unit model is established in multi-body dynamics software LMS Virtual.Lab, and the aircraft weight, the gravity center and the inertia attribute are set in the aircraft structure model; the undercarriage system model is internally provided with the weight, the gravity center, the inertia attribute and the buffer attribute of each structure of the undercarriage, and the steel cable unit model is internally provided with the steel cable attribute; the method comprises the steps that firstly, a full-aircraft mooring load calculation model is established, then, the aircraft appearance is imported into dynamics simulation software and assembled with an aircraft undercarriage system to construct a virtual prototype, finally, the full-aircraft mooring load calculation model is applied to the virtual prototype, scheme design evaluation is conducted on full-aircraft mooring according to standard requirements, and an optimal aircraft mooring scheme is obtained. Optimization design can be effectively carried out on an aircraft mooring scheme, the design requirement of an aircraft structure for mooring loads is met, and the model development period is shortened.

Description

technical field [0001] The invention relates to the technical field of aircraft mooring loads, in particular to an aircraft mooring scheme evaluation method based on a multi-body model. Background technique [0002] When the aircraft is parked on the ground, it needs to be fixed on the ground by steel cables to prevent the aircraft from moving under the action of wind or other loads. Reasonable mooring scheme and accurate mooring load are the design basis of the mooring structure of the aircraft. The most commonly used methods for calculating aircraft moored loads are engineering calculation methods and statics simulation calculations. These two calculation methods are based on statics theory to solve hyperstatic equations. The efficiency is low, and at the same time, due to the many mooring schemes, it is not convenient for programmed calculation. [0003] The traditional analysis model based on finite element theory does not consider the cushioning performance of landing ...

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Problems solved by technology

[0002] When the aircraft is parked on the ground, it needs to be fixed on the ground by steel cables to prevent the aircraft from moving under the action of wind or other loads. A reasonable mooring scheme and accurate mooring load are the design basis of the mooring structure of the aircraft. The most commonly used methods for calculating aircraft moored loads are engineering calculation methods and static simulation calculations. These two calculation methods are based on statics theory to solve hyperstatic equations. The efficiency is low, and at the same time, due to the many mooring schemes, it is not convenient for programmed calculation

[0003] The traditional analysis model based on finite element theory does not consider the cushioning performance of landing gear and tires, or the inertial system of the whole machine when calculating the moored load of the whole machine. The analysis model is too ideal, and the load uncertainty is high. Large load uncertainty factor to ensure the reliability of the cable load, and the degree of visualization is low

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