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Method for calculating stress of each leaf of end contact-type main and auxiliary taper-leaf parabolic springs

A calculation method and parabolic technology, applied in the field of vehicle suspension leaf springs, can solve problems such as failure to give, complexity, etc.

Inactive Publication Date: 2016-09-07
浙江泰嘉光电科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

However, since the straight sections at the ends of each piece of the main spring are not isomorphic, the lengths of the secondary spring and the main spring are not equal. Therefore, the calculation of the end force of each piece of the main spring and the secondary spring after the primary and secondary contact is very complicated. Therefore, The stress calculation method of each leaf main spring and each leaf auxiliary spring at different positions of the end-contact few-leaf parabolic variable-section main and auxiliary spring has not been given before.

Method used

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  • Method for calculating stress of each leaf of end contact-type main and auxiliary taper-leaf parabolic springs
  • Method for calculating stress of each leaf of end contact-type main and auxiliary taper-leaf parabolic springs
  • Method for calculating stress of each leaf of end contact-type main and auxiliary taper-leaf parabolic springs

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Embodiment

[0056] Example: The width of a certain end-contact type few-piece parabolic variable-section primary and secondary springs is b=60mm, the modulus of elasticity E=200GPa, and half of the installation distance l 3 =55mm; Among them, the number of main reeds m=2, half the length L of each main spring M =575mm, the thickness h of the straight section at the root of the main spring 2M =11mm, the distance l from the root of the parabolic segment of the main spring to the end point of the main spring 2M = L M -l 3 =520mm; Thickness h of the straight section at the end of the first main spring 11 =7mm, the thickness ratio of the parabolic segment of the first main spring to 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 parabolic segment of the second main spring to β 2 = h 12 / h 2M = 0.55. Number of secondary reeds n=1, half length L of secondary reeds A =525mm, width b=60mm, half o...

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Abstract

The invention relates to a method for calculating stress of each leaf of end contact-type main and auxiliary taper-leaf parabolic springs and belongs to the technical field of suspension steel plate springs. Stress of each leaf of main springs and auxiliary springs at different positions is calculated analytically according to structural parameters, elasticity modulus, auxiliary spring active load and main spring load of each leaf of main springs and auxiliary springs of end contact-type main and auxiliary taper-leaf parabolic springs; According to examples and simulation verification, by means of the method, accurate and reliable stress calculated values of main springs and auxiliary springs at any position can be obtained; reliable method is provided for calculating stress calculated values of main springs and auxiliary springs of end contact-type main and auxiliary taper-leaf parabolic springs at any position; product design level, performance, service life, and vehicle ride performance are increased; at the same time, cost for design and test is reduced, and product development speed is increased.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a method for calculating the stress of each leaf of an end-contact type few-piece parabolic primary and secondary spring. Background technique [0002] There is a certain gap between the primary and secondary springs with a small number of parabolic variable cross-sections to ensure that when the load is greater than the secondary springs, the primary and secondary springs work together in contact to meet the design requirements for composite stiffness and stress intensity. Due to the complex force of the first main spring of the small variable cross-section main and auxiliary springs, it not only bears vertical loads, but also bears torsional loads and longitudinal loads. Therefore, the end of the first main spring is actually designed to be straight The thickness and length of the section are greater than the thickness and length of the straight sections at the ends of the ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 周长城王炳超赵雷雷刘灿昌于曰伟汪晓王凤娟
Owner 浙江泰嘉光电科技有限公司
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