Gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty

A technology of uncertainty and gear transmission, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as cognitive uncertainty, unreliable design results, and inability to express and quantify in probability theory

Active Publication Date: 2012-05-09
BEIHANG UNIV
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Problems solved by technology

However, in the actual gear transmission design process, due to the influence of factors such as manufacturing, product assembly, material properties, applied load and external environment, there are not only a large number of random uncertainties, but also a certain degree of cognitive uncertainty. sex
Due to the lack of

Method used

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  • Gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty
  • Gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty
  • Gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the example of gear transmission.

[0056] The present invention considers cognitive and random uncertainties in the multidisciplinary reliability analysis method of gear transmission. First, the components of the reliability analysis of the gear transmission are specified, including two subsystems of the shaft subsystem and the gear subsystem, 11 limit state functions, Two coupled state variables and seven design parameters.

[0057] 1. For figure 1 The gear transmission shown is analyzed to determine the degree of uncertainty of the design parameters. In the actual design process, due to the influence of factors such as manufacturing, product assembly, material properties, applied load, and external environment, the present invention considers the gear face width (x r1 ), gear modulus (x r2 ), number of pinion teeth (x r3 ), large gear bearing spacing (x r4 ), large gear shaft diameter (x ...

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Abstract

A gear transmission multidisciplinary reliability analysis method considering cognition and random uncertainty in an actual engineering design process belongs to the technical field of design optimization and reliability design of mechanical products and includes quantizing the cognition and the random uncertainty of gear modules, tooth number, tooth surface width, distance between bearings and gear diameter caused by the factors of processing, assembly, material characteristics, applied load, external environment and the like, establishing multidisciplinary reliability integrated evaluation index, integrating of the reliability analysis method and a multidisciplinary design optimization strategy, decoupling of a multidisciplinary reliability analysis process, and being based on a functional measurement method. The gear transmission multidisciplinary reliability analysis method considering the cognition and the random uncertainty provides a comprehensive quantitative method, establishes the multidisciplinary reliability integrated evaluation index which is more conformable to engineering practice, integrates a traditional reliability analysis method and the multidisciplinary design optimization strategy, and provides a new thought for reliability analysis of gear transmission products.

Description

technical field [0001] The invention belongs to the technical field of reliability design of complex products, in particular to a multidisciplinary reliability analysis method of gear transmission under the condition of multi-source uncertainty. Background technique [0002] Gear transmission system is a common form of power transmission in large and complex equipment such as aerospace vehicles, aero engines, ships, large electromechanical equipment, weapons and vehicles. The performance, especially reliability, of gear transmission directly determines the quality of large and complex equipment. Therefore, people have carried out relevant research on the reliability of gear transmission from the aspects of product design, product manufacturing and product maintenance. According to relevant statistics, the contribution rate of product design to product quality can reach 70% to 80%. It can be seen that the design determines the inherent reliability of the product and endows t...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘继红李连升安向男
Owner BEIHANG UNIV
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