CN-121980735-A - Hinge abrasion depth dynamic simulation method based on random event

CN121980735ACN 121980735 ACN121980735 ACN 121980735ACN-121980735-A

Abstract

The invention discloses a hinge abrasion depth dynamic simulation method based on random events, which comprises the steps of S1, constructing a random event time function matrix, generating periodical collision event occurrence time according to the design life of an aircraft hinge and a predefined time unit, S2, determining collision influence duration, calculating duration of influence of a collision event on an abrasion process based on the minimum value or the maximum value of time differences of adjacent collision events in the random event time function matrix, S3, setting bidirectional abrasion factors, respectively representing multiplication or halving effects of collision events with consistent and opposite stress directions on the abrasion depth, S4, establishing an abrasion process function, and dynamically adjusting a mean function of an IG process according to whether the current time point belongs to the collision event occurrence time and duration influence time of the collision event in the random event time function matrix so as to reflect nonlinear influence of the collision event.

Inventors

SHEN LINJIE
DU JIAWEI
CHEN HAORAN
Yi Huahui
XIAO FENG

Assignees

西安工业大学

Dates

Publication Date: 20260505
Application Date: 20251204

Claims (7)

1. A method for dynamically simulating hinge wear depth based on a random event, comprising: S1, constructing a random event time function matrix, and generating a periodic collision event occurrence moment according to the design life of an aircraft hinge and a predefined time unit; S2, determining the duration of impact of the collision, and calculating the duration of impact of the collision event on the abrasion process based on the minimum value or the maximum value of the time difference of the adjacent collision events in the random event time function matrix; S3, setting bidirectional wear factors, and respectively representing multiplication or halving effects of collision events with consistent and opposite stress directions on the wear depth; S4, establishing a wear process function, and dynamically adjusting an average function of the IG process to reflect nonlinear influence of the collision event according to whether the current time point belongs to the occurrence time of the collision event and the duration influence period of the collision event in the random event time function matrix.
2. The method according to claim 1, characterized in that the parameters in the random event time function matrix T comprise a number of periods p calculated by the following formula: The random event time function matrix T is expressed as: T=[1,2,...,p]*[12,17,23,24,35,45,57,61,76,87,91,94,98,101,112,135,141,154,165,172,187,192]; or, t= [1,2, ], p ] [2,4,7,9]; or, t= [1,2, ], p ] [17,31,47,65,81,102,131,154,169,181]; Or, t= [1,2, ], p ] [31,65,102,154,181]; or, t= [1,2, ], p ] [17,47,81,131,169].
3. The method according to claim 2, characterized in that the impact duration d is expressed as: A constant of 1; Or, a positive integer greater than 1; or d is equal to 50% of the minimum approach difference, rounded down, depending on the value in the T matrix; Or d is equal to 50% of the minimum approach difference, rounded up, depending on the values in the T matrix. Or d is equal to 50% of the maximum approach difference, rounded down, depending on the value in the T matrix. Or d is equal to 50% of the maximum approach difference, rounded up, depending on the value in the T matrix.
4. A method according to claim 3, characterized in that the wear process function is expressed as: Or (b) Wherein, the As a function of the course of the wear, In order for the wear factor to be a factor, For a stress collision to affect the wear factor in the same direction as the wear stress, The impact wear factor is the opposite direction of the stress impact and wear.
5. A hinge wear depth dynamic simulation device based on a random event, comprising: the first module is used for constructing a random event time function matrix and generating periodic collision event occurrence time according to the design life of the aircraft hinge and a predefined time unit; a second module for determining a duration of impact of the collision, calculating a duration of impact of the collision event on the wear process based on a minimum or maximum value of time differences of adjacent collision events in the random event time function matrix; the third module is used for setting bidirectional wear factors and respectively representing multiplication or halving effects of collision events with consistent and opposite stress directions on the wear depth; and a fourth module, configured to establish a wear process function, and dynamically adjust a mean function of the IG process to reflect a nonlinear effect of the collision event according to whether the current time point belongs to a collision event occurrence time and a duration effect period thereof in the random event time function matrix.
6. An electronic device comprising a processor and a memory; Wherein the processor runs a program corresponding to executable program code stored in the memory by reading the executable program code for implementing the method according to any one of claims 1-4.
7. A non-transitory computer readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the method according to any one of claims 1-4.

Description

Hinge abrasion depth dynamic simulation method based on random event Technical Field The invention relates to the technical field of aircraft hinge wear modeling and life prediction, in particular to a hinge wear depth dynamic simulation method based on a random event. Background Aircraft hinges are critical moving components of aircraft structural systems, the depth of wear of which directly affects the structural safety and service life of the aircraft. In existing studies, the simulation of the dynamic change of the hinge wear depth is based on a certain stochastic algorithm, for example, the IG process simulates the dynamic change characteristic of the hinge wear depth. During mechanical movements, however, more or less stress collisions for the machine occur. At the moment of impact, the hinge in operation is affected, for example, the depth of wear increases instantaneously and for a period of time in the same stress direction, and the depth of wear decreases instantaneously and for a period of time as well in the opposite stress direction. Disclosure of Invention The invention mainly aims to provide a hinge wear depth dynamic simulation method based on a random event. It is another object of the present invention to provide a hinge wear depth dynamic simulation device based on random events. A third object of the present invention is to propose an electronic device. A fourth object of the present invention is to propose a non-transitory computer readable storage medium. To achieve the above objective, an embodiment of a first aspect of the present invention provides a method for dynamically simulating a hinge wear depth based on a random event, including: S1, constructing a random event time function matrix, and generating a periodic collision event occurrence moment according to the design life of an aircraft hinge and a predefined time unit; S2, determining the duration of impact of the collision, and calculating the duration of impact of the collision event on the abrasion process based on the minimum value or the maximum value of the time difference of the adjacent collision events in the random event time function matrix; S3, setting bidirectional wear factors, and respectively representing multiplication or halving effects of collision events with consistent and opposite stress directions on the wear depth; S4, establishing a wear process function, and dynamically adjusting an average function of the IG process to reflect nonlinear influence of the collision event according to whether the current time point belongs to the occurrence time of the collision event and the duration influence period of the collision event in the random event time function matrix. Optionally, the parameters in the random event time function matrix T include a period number p, where the period number p is calculated by the following formula: The random event time function matrix T is expressed as: T=[1,2,...,p]*[12,17,23,24,35,45,57,61,76,87,91,94,98,101,112,135,141,154,165,172,187,192]; or, t= [1,2, ], p ] [2,4,7,9]; or, t= [1,2, ], p ] [17,31,47,65,81,102,131,154,169,181]; Or, t= [1,2, ], p ] [31,65,102,154,181]; or, t= [1,2, ], p ] [17,47,81,131,169]. Optionally, the impact duration d is expressed as: A constant of 1; Or, a positive integer greater than 1; or d is equal to 50% of the minimum approach difference, rounded down, depending on the value in the T matrix; Or d is equal to 50% of the minimum approach difference, rounded up, depending on the values in the T matrix. Or d is equal to 50% of the maximum approach difference, rounded down, depending on the value in the T matrix. Or d is equal to 50% of the maximum approach difference, rounded up, depending on the value in the T matrix. Optionally, the wear process function is expressed as: Or (b) Wherein, the As a function of the course of the wear,In order for the wear factor to be a factor,For a stress collision to affect the wear factor in the same direction as the wear stress,The impact wear factor is the opposite direction of the stress impact and wear. To achieve the above object, an embodiment of a second aspect of the present invention provides a hinge wear depth dynamic simulation device based on a random event, including: the first module is used for constructing a random event time function matrix and generating periodic collision event occurrence time according to the design life of the aircraft hinge and a predefined time unit; a second module for determining a duration of impact of the collision, calculating a duration of impact of the collision event on the wear process based on a minimum or maximum value of time differences of adjacent collision events in the random event time function matrix; the third module is used for setting bidirectional wear factors and respectively representing multiplication or halving effects of collision events with consistent and opposite stress directions on the wear depth; and a fourth module, configured to establish