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Method for determining endpoint force of end contact type few-leaf slash type variable-section main/auxiliary springs

A determination method and oblique type technology, applied in special data processing applications, instruments, electrical digital data processing, etc. Computational complexity, etc.

Inactive Publication Date: 2016-08-31
王炳超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the straight section at the end of the main spring is not isostructural, and when the load is greater than the working load of the auxiliary spring, the deformation and internal force of the main spring and the auxiliary spring are coupled. Therefore, each piece of the main spring and the auxiliary spring The analysis and calculation of the end-point force of the spring is very complicated. At present, no accurate analytical calculation method for the end-point force of the main and auxiliary springs with a small number of oblique lines and variable cross-sections with end contact has been given at home and abroad.

Method used

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  • Method for determining endpoint force of end contact type few-leaf slash type variable-section main/auxiliary springs
  • Method for determining endpoint force of end contact type few-leaf slash type variable-section main/auxiliary springs
  • Method for determining endpoint force of end contact type few-leaf slash type variable-section main/auxiliary springs

Examples

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Embodiment

[0056] Example: an end-contact type few-piece inclined-line variable-section primary and secondary spring, width b=60mm, elastic modulus E=200GPa, half of the installation distance l 3 =55mm, wherein, the number of main reeds m=2, half the length L of each main spring M =575mm, the distance l from the root of the oblique line to the end of the main spring 2M = L M -l 3 =520mm, the thickness h of the straight section at the root of each main spring 2M =11mm; the thickness of the straight section at the end of the first main spring is h 11 = 7mm, the thickness ratio of the oblique line section of the first main spring is β 1 =h 11 / h 2M =0.64; the thickness h of the straight section at the end of the second main spring 12 = 6mm, the thickness ratio of the oblique line section of the second main spring to β 2 =h 12 / h 2M = 0.55. The number of secondary reeds n=1, half the length L of the secondary reed A=525mm, the horizontal distance l between the auxiliary spring co...

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Abstract

The invention relates to a method for determining endpoint force of end contact type few-leaf slash type variable-section main / auxiliary springs, and belongs to the technical field of suspension steel plate springs. According to the method, the endpoint force of each main / auxiliary spring can be determined according to the structural parameter, elasticity modulus and main / auxiliary spring load of each main / auxiliary spring of the end contact type few-leaf slash type variable-section main / auxiliary springs. Through examples and simulation verification, the method for determining endpoint force of end contact type few-leaf slash type variable-section main / auxiliary springs is correct and can be used for obtaining correct and reliable endpoint force value of each main / auxiliary spring, so that an important technical foundation is laid for the design, complex rigidity check and stress strength check of the end contact type few-leaf slash type variable-section main-auxiliary springs; by utilizing the method, the design level, quality and vehicle running smoothness of the end contact type few-leaf slash type variable-section main / auxiliary springs can be improved, the service life can be prolonged, the design and experiment expenses can be reduced, and the development speed can be improved.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a method for determining end point force of a primary and secondary spring of an end-contact type with a few oblique lines and a variable cross-section. Background technique [0002] For leaf springs with variable cross-sections, in order to meet the requirements of variable stiffness, it is usually designed as the main and auxiliary springs, and through the gap between the main and auxiliary springs, it is ensured that the main and auxiliary springs contact and work together after a certain load is greater than that to meet the vehicle suspension. Design requirements for leaf spring stiffness of frame under different load conditions. Since the first piece of the main spring with variable cross-section is subjected to complex forces, it not only bears the vertical load, but also bears the torsional load and the longitudinal load. Therefore, the thickness of the straight section...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 王炳超周长城
Owner 王炳超
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