Vibration evaluation method for aircraft cabin environment test

Abstract

The invention discloses a vibration evaluation method for an aircraft cabin environment test, and relates to the technical field of aircraft testing, and the method comprises the following steps: S1, carrying out the scoring of a tested human body model; s2, calculating a multi-point multi-axial vibration total value; s2-1, calculating the bandwidth of a 1 / 3 octave band; s2-2, calculating a weighting root mean square acceleration; s2-3, calculating the total weighted acceleration of a single vibration signal; s2-4, carrying out multi-point and multi-axial synthesis; s3, quantitative relation analysis; and S4, drawing a vibration evaluation chart. According to the vibration evaluation method disclosed by the invention, the human body discomfort evaluation grade is refined, the corresponding relationship between the weighted acceleration and the evaluation result in the conventional standard is corrected, and the corresponding relationship between the multi-point multi-axial vibration total value and the discomfort in the vibration environment of the aircraft cabin is described more accurately; the total vibration value limit corresponding to different uncomfortable degrees is defined, and the method is more suitable for human body comfort evaluation in the aircraft cabin vibration environment.

Description

technical field [0001] The invention relates to the technical field of aircraft testing, in particular to a vibration evaluation method used for aircraft cabin environmental testing. Background technique [0002] Compared with foreign countries, there is a clear gap in the design technology of cabin vibration comfort in my country's passenger aircraft during flight. One of the main problems is the lack of human body vibration comfort evaluation standards for passenger aircraft. At present, the most widely recognized and widely used general standard in the evaluation standard of human vibration comfort is ISO2631-1997 issued by the International Organization for Standardization. Some countries and regions have also promulgated their own human body vibration comfort standards, such as BS6841-1987 promulgated by the United Kingdom, and my country has formulated the national standard GB / T13441 equivalent to the international standard. These standards have been widely used in th...

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Problems solved by technology

[0006] The evaluation of aircraft cabin environmental vibration comfort requires human subjective vibration comfort test research, but because it takes people's subjective feelings as the research object, there will inevitably be various differences, even if the number of samples is increased, the existence of subjective feelings cannot be changed. Therefore, it is necessary to use an alternative form to overcome the problem of subjective differences in the vibration comfort of the aircraft cabin environment

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