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Forward design method of parabolic tapered few-leaf spring on constructions including vehicle suspension

A vehicle suspension and design method technology, applied in the direction of spring/shock absorber design characteristics, leaf spring, computer-aided design, etc., can solve problems such as unsatisfactory

Inactive Publication Date: 2018-06-22
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the searched information, it is known that the number of leaf springs, the structural parameters of each leaf spring and the free tangent line of the equal-structure parabolic variable-section leaf spring based on the vehicle suspension parameters and rated load have not been given. The forward design method of arc height, therefore, cannot meet the requirements of the rapid development of vehicles and the modern CAD design of suspension with few parabolic variable-section leaf springs

Method used

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  • Forward design method of parabolic tapered few-leaf spring on constructions including vehicle suspension
  • Forward design method of parabolic tapered few-leaf spring on constructions including vehicle suspension
  • Forward design method of parabolic tapered few-leaf spring on constructions including vehicle suspension

Examples

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Effect test

Embodiment 1

[0066] Embodiment 1: The width b=60mm of a leaf spring of a certain vehicle suspension structure such as few pieces of parabolic variable section, half of the span L of the leaf spring T =550mm, modulus of elasticity E=200GPa, for half length L of straight section of root 0 = 50mm. The rated load P borne by the leaf spring of the single wheel suspension of the vehicle N =8000N, the remaining tangent arc height H of the leaf spring under rated load gsy = 30mm. Allowable stress of the first leaf spring under rated load [σ 1 ] = 450MPa, the allowable stress of the leaf spring under the rated load [σ] = 500MPa, the maximum allowable stress of the leaf spring under the impact load [σ max ]=900MPa. Frequency deviation design requirement value f of suspension system under rated load 0s = 2.0Hz. Root gasket thickness δ c =3mm, end gasket thickness δ e= 6mm. According to the vehicle suspension parameters and bias frequency design requirements, the installation structure param...

Embodiment 2

[0134] Embodiment 2: the width b=65mm of the leaf spring of a certain vehicle suspension and other constructions such as few pieces of parabolic variable section, half of the span L T =570mm, half the length L of the straight section at the root 0 = 55mm. The rated load P borne by the vehicle single wheel suspension spring N =16500N, the allowable stress of the first leaf spring under rated load [σ 1 ] = 450MPa, the allowable stress of the leaf spring under the rated load [σ] = 500MPa, the maximum allowable stress of the leaf spring under the impact load [σ max ]=900MPa. Root gasket thickness δ c =3mm, end gasket thickness δ e = 6mm. Frequency deviation design requirement value f of suspension system under rated load 0s =2.2Hz, the remaining tangent arc height H of the leaf spring under the rated load gsy = 30mm. According to the vehicle suspension parameters, the rated load borne by the single-wheel suspension spring, the suspension bias frequency design requirement ...

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Abstract

The invention relates to a forward design method of a parabolic tapered few-leaf spring on constructions including a vehicle suspension and belongs to the technical field of vehicle suspension taperedfew-leaf springs. According to the forward design method provided by the invention, forward design can be performed on the leaf amount of the parabolic tapered few-leaf springs on the constructions including the vehicle suspension as well as structure parameters and free tangent line arc height of each leaf spring according to vehicle suspension parameters, offset frequency design requirement values, mounting structure parameters and requirements of a suspension leaf spring, the elastic modulus, the allowable stress and the thicknesses of a root gasket and an end part gasket. Known from prototype tests, the provided forward design method of the parabolic tapered few-leaf spring on the constructions including the vehicle suspension is correct and provides a reliable technological method todesign of the leaf amount of the parabolic tapered few-leaf springs on the constructions including the vehicle suspension and the structure parameters of each leaf spring. By utilizing the method, the design level of a product can be increased, the reliability as well as the vehicle ride comfort and safety of the product can be improved, and the service life of the product can be prolonged; and meanwhile, the design and test costs are lowered, and the developing rate of the product is accelerated.

Description

technical field [0001] The invention relates to a few-piece variable-section leaf spring of a vehicle suspension, in particular to a forward design method of a few-piece parabolic variable-section leaf spring of a structure such as a vehicle suspension. Background technique [0002] With the implementation of automobile energy-saving and lightweight policies, leaf springs with small variable cross-sections are increasingly popular in vehicle suspension due to their advantages of light weight, high material utilization, no or small friction between sheets, low vibration and noise, and long service life. Experts, manufacturers and vehicle manufacturers have paid close attention to it, and it has been widely used in vehicle suspension systems. Among them, the most widely used is the equal-structure few-piece parabolic variable-section leaf spring. For a leaf spring with given vehicle suspension parameters and rated load, it not only meets the design requirements of leaf spring ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F3/02F16F1/18G06F17/50
CPCF16F1/187F16F3/023F16F2226/04F16F2228/06F16F2230/0082F16F2230/40F16F2238/02G06F30/15G06F30/17G06F30/20G06F2119/06
Inventor 周长城于曰伟赵雷雷汪晓杨腾飞杨铖兆王凤娟李晓晗梁宇通
Owner SHANDONG UNIV OF TECH