A straight gear meshing stiffness dynamic correction calculation method under a fluctuation load working condition

A technique for mesh stiffness, fluctuating loads, used in computing, special data processing applications, instrumentation, etc.

Pending Publication Date: 2019-06-21
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to literature and patent searches, although there are many literatures and patents that provide calculation methods for gear mesh stiffness under dif

Method used

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  • A straight gear meshing stiffness dynamic correction calculation method under a fluctuation load working condition
  • A straight gear meshing stiffness dynamic correction calculation method under a fluctuation load working condition
  • A straight gear meshing stiffness dynamic correction calculation method under a fluctuation load working condition

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specific Embodiment 1

[0079] A calculation method for dynamic correction of meshing stiffness of spur gears under fluctuating load conditions, comprising the following specific steps:

[0080] Step 1: Use the energy method to synthesize the time-varying mesh stiffness of each pair of transmission gear pairs in the gear transmission system under constant load conditions, calculate the average mesh stiffness of each pair of transmission gear pairs, and substitute the average mesh stiffness into the bending-torsion coupling model of the gear transmission system , load the external fluctuating load to solve the lateral vibration and torsional vibration response of the system, record the lateral vibration response of the nth drive wheel as The torsional vibration response is The lateral vibration response of the nth driven wheel is The torsional vibration response is

[0081] Step 2: Analyze the influence of lateral vibration and torsional vibration response on the actual meshing state of each pa...

specific Embodiment 2

[0116] combine figure 1 , figure 2 , image 3 and Figure 4 , applying the "calculation method for dynamic correction of spur gear meshing stiffness under fluctuating load conditions" of the present invention to a single-stage spur gear transmission system, including the following specific steps:

[0117] Step 1: Use the energy method to synthesize the time-varying mesh stiffness of the transmission gear pairs in the gear transmission system under constant load conditions, calculate the average mesh stiffness of each pair of gear pairs, substitute the average mesh stiffness into the bending-torsion coupling model of the gear transmission system, and load the external Fluctuating loads solve for the lateral and torsional vibration responses of the system. Include the following specific steps:

[0118] Step 1.1: Synthesize the time-varying meshing stiffness of a single tooth of a transmission gear pair by using the time-varying meshing stiffness energy method of spur gears,...

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Abstract

The invention discloses a method for dynamically correcting and calculating the meshing stiffness of a straight gear under a fluctuation load working condition, and belongs to the technical field of mechanical dynamics. The method comprises the following steps: synthesizing time-varying meshing stiffness of a transmission gear pair in a gear transmission system under a constant load working condition by using an energy method, calculating average meshing stiffness of each pair of gear pairs, substituting the average meshing stiffness into a bending-torsion coupling model of the gear transmission system, and loading an external fluctuation load to solve transverse vibration and torsional vibration responses of the system; analyzing the influence of transverse vibration and torsional vibration responses on the actual meshing state of each transmission gear pair under the fluctuation load working condition; and the straight gear meshing stiffness under the external fluctuation load working condition is dynamically corrected. The method has the advantages that the actual meshing state of the straight gear pair is reflected more truly; different from a traditional straight gear meshingstiffness calculation method, the method considers that the center distance, the meshing angle and the coincidence degree of a meshing gear pair are changed instead of being constant, and the method is closely related to the vibration state of a driving wheel and a driven wheel.

Description

technical field [0001] The invention belongs to the technical field of mechanical dynamics, and in particular relates to a calculation method for dynamic correction of meshing stiffness of spur gears under fluctuating load conditions. Background technique [0002] Due to its stable transmission, reliable operation and high transmission efficiency, the gear transmission system is widely used in transportation, energy and power, petrochemical and machinery manufacturing and other fields. The operating conditions of the gear transmission system and the external loads it bears are complex and changeable, resulting in complex and changeable dynamic response of the gear transmission system, which is difficult to predict accurately. [0003] The time-varying meshing stiffness of the gear is the most important internal excitation of the gear system. Establishing a time-varying meshing stiffness calculation model that can most truly reflect the actual meshing state of the gear is the...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02T90/00
Inventor 袁运博郭宜斌王东华陈亚辉李玩幽率志君姜晨醒刘震
Owner HARBIN ENG UNIV
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