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Simulation calculation method for clamping endpoint force of identically-structured few-leaf parabolic variable-section leaf springs

A simulation computing, parabolic technology, applied in computing, design optimization/simulation, special data processing applications, etc., can solve problems such as unreliable and unsatisfactory

Inactive Publication Date: 2018-07-06
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to the information obtained, due to the relationship between the pre-clamped end point force of each leaf spring and the stiffness of each leaf spring, the free tangent arc height, the initial tangent arc height and the initial tangent arc height of the first leaf spring after assembly and clamping Constrained by simulation calculations, a reliable simulation calculation method for the clamping end force of equal-structure parabolic variable-section leaf springs has not been given before at home and abroad, which cannot meet the rapid development of vehicles and the modernization of suspensions with small-piece variable-section leaf springs CAD design requirements

Method used

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  • Simulation calculation method for clamping endpoint force of identically-structured few-leaf parabolic variable-section leaf springs
  • Simulation calculation method for clamping endpoint force of identically-structured few-leaf parabolic variable-section leaf springs
  • Simulation calculation method for clamping endpoint force of identically-structured few-leaf parabolic variable-section leaf springs

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: the width b=60mm of the few slices parabolic variable-section leaf spring of such-and-such construction, half span L T =570mm, half the length L of the straight section of the root clamped by the saddle bolt 0 =50mm, elastic modulus E=200GPa. The number of leaf springs n=3, the thickness h of the straight section at the root of each leaf spring 2 =18mm, the thickness h of the straight section at the end 1 =9mm, the thickness ratio of the parabola segment β=h 1 / h 2 =0.5, the design value H of the free tangent arc height of each leaf spring g10 =87.4mm,H g20 =96.00mm, H g30 =98.60mm. Root gasket thickness δc =3mm, end gasket thickness δ e = 6mm. According to the number of leaf springs, the structural parameters of each leaf spring, the design value of the free tangent arc height, elastic modulus, the thickness of the root gasket and the end gasket, the number of parabolic variable-section leaf springs of the same construction After assembly and cl...

Embodiment 2

[0050] Embodiment two: the width b=60mm of equal-structure few-piece parabolic variable-section leaf spring, half span L T =570mm, half the length L of the straight section of the root clamped by the saddle bolt 0 =50mm, elastic modulus E=200GPa. The number of leaf springs n=4, the thickness h of the straight section at the root of each leaf spring 2 = 16mm, the thickness h of the straight section at the end 1 =8mm, the thickness ratio of the parabola segment β=h 1 / h 2 = 0.5. The design value H of the free tangent arc height of each leaf spring g10 =92.2mm,H g20 =99.1mm, H g30 =100.9mm, H g40 = 102.8 mm. Root gasket thickness δ c =3mm, end gasket thickness δ e = 6mm. According to the number of leaf springs, the structural parameters of each leaf spring and the design value of the free tangent arc height, modulus of elasticity, thickness of the root gasket and end gasket, for the same configuration of few-piece parabolic variable-section leaf spring After assembly...

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Abstract

The invention relates to a simulation calculation method for the clamping endpoint force of identically-structured few-leaf parabolic variable-section leaf springs, and belongs to the technical fieldof suspension few-leaf variable-section leaf springs. According to the number of the leaf springs, design values of structural parameters and free tangent arc heights of all the leaf springs, the elastic modulus of the leaf springs and the thicknesses of root gaskets and end gaskets, simulation calculation can be conducted on the clamping endpoint force of all the leaf springs after the identically-structured few-leaf parabolic variable-section leaf springs are assembled and clamped. It is known through prototype testing that the provided simulation calculation method for the clamping endpointforces of the identically-structured few-leaf parabolic variable-section leaf springs is correct, an accurate and reliable simulation calculation value of the clamping endpoint force of each leaf spring can be obtained, and a reliable technical foundation is laid for the simulation calculation of the pre-clamping stress of each leaf spring. By means of the method, the design level of products canbe increased, the reliability of the products is improved, the service life of the products is prolonged, and the driving safety of vehicles is improved; meanwhile, the design and test cost of the products is reduced, and the development speed of the products is increased.

Description

technical field [0001] The invention relates to a small-piece variable-section leaf spring of a vehicle suspension, in particular to a simulation calculation method for clamping end point force of a small-piece parabolic variable-section leaf spring of an equal configuration. 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. Usually, in order to meet the design requirements of the clamping stiffness characteristics of the leaf sprin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 周长城于曰伟赵雷雷汪晓杨腾飞杨铖兆朱召辉张云山毛少坊
Owner SHANDONG UNIV OF TECH
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