Simulation checking calculation method for original tangent camber heights of oblique-line-shaped variable-cross-section plate springs with different structural ends

A non-isostructural and oblique type technology, which is applied in the field of simulation test algorithm for the initial tangent arc height of the oblique type variable-section leaf spring, can solve the problem that the initial non-isostructural oblique type variable-section leaf spring has not been given. The simulation algorithm of tangent arc height, the calculation of the clamping stiffness of the slanted variable section leaf spring with unequal structure at the end and the complicated calculation of the clamping stiffness of the variable section leaf spring, can achieve the effect of speeding up product development, reducing design, development and test costs, and improving design level.

Inactive Publication Date: 2018-05-08
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to the researched data, the calculation of the clamping stiffness of the leaf springs with non-equal structure and few oblique lines at the end is very complicated, and it is affected by the initial tangent arc height of each leaf spring and the structural parameters, free tangent arc height, The relationship between the thickness of the root gasket and the end gasket, and the clamping stiffness of each leaf spring after assembly and clamping has not been given before. High simulation algorithm

Method used

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  • Simulation checking calculation method for original tangent camber heights of oblique-line-shaped variable-cross-section plate springs with different structural ends
  • Simulation checking calculation method for original tangent camber heights of oblique-line-shaped variable-cross-section plate springs with different structural ends
  • Simulation checking calculation method for original tangent camber heights of oblique-line-shaped variable-cross-section plate springs with different structural ends

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Effect test

Embodiment 1

[0024] Example 1: half of the working length L of a non-equal-structured oblique-line type variable-section leaf spring at a certain end T =550mm, half the length L of the straight section of the root clamped by the saddle bolt 0 =50mm, width b=60mm, 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 =12mm, the thickness of the straight section at the end is h 11 = 8mm, h 12 = 7mm, h 13 = 6 mm. The thickness ratios of the oblique segments of each leaf spring are β 1 =h 11 / h 2 =0.6667,β 2 =h 12 / h 2 = 0.5833, β 3 =h 13 / h 2 = 0.50. The design value H of the free tangent arc height of each leaf springg10 =95.2mm,H g20 =101mm, H g30 = 107.7 mm. Root gasket thickness δ c =3mm, end gasket thickness δ e = 6 mm. According to the number of leaf springs, elastic modulus, the thickness of the root gasket and the end gasket, the structural parameters of each leaf spring and the design va...

Embodiment 2

[0044] Embodiment 2: the width b=60mm of a non-equal few-piece slanted-line variable-section leaf spring at a certain end, and half the effective length L T =550mm, 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 = 14mm, the thickness h of the straight section at the end 11 = 9mm, h 12 = 8mm, h 13 = 7mm, h 14 = 6 mm. The thickness ratios of the oblique segments of each leaf spring are β 1 =h 11 / h 2 = 0.6429, β 2 =h 12 / h 2 = 0.5714, β 3 =h 13 / h 2 =0.50,β 4 =h 14 h 2 = 0.4286. The design value of the free tangent arc height of each leaf spring is H g10 =90.4mm, H g20 =95.4mm,H g30 =99.7mm,H g40 = 104.7mm. Root gasket thickness δ c =3mm, end gasket thickness δ e = 6 mm. According to the number of leaf springs, elastic modulus, the thickness of the root gasket and the end gasket, t...

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Abstract

The invention relates to a simulation checking calculation method for original tangent camber heights of oblique-line-shaped variable-cross-section plate springs with different structural ends and belongs to the technical field of suspension less-leaf variable-cross-section plate springs. According to the simulation checking calculation method, the simulation checking calculation of the original tangent camber height of each plate spring after the less-leaf oblique-line-shaped variable-cross-section plate springs with the different structural ends are assembled and clamped can be conducted according to the number of the plate springs, the elasticity modulus, the thicknesses of root and end gaskets, the structure parameters of each plate spring and the design values of the free tangent camber heights. According to the prototype testing, the simulation checking calculation method for the original tangent camber heights of the oblique-line-shaped variable-cross-section plate springs withthe different structural ends provided by the invention is accurate and a reliable technology method can be provided for the simulation checking calculation of the original tangent camber height of afirst plate spring. By means of the method, it can be guaranteed that the original tangent camber height of the assembled and clamped first plate spring meets the design requirements and the design level and reliability of the products and the vehicle driving safety can be improved; meanwhile, the design and test cost of the products can be reduced and the developing speed of the products can be quickened.

Description

technical field [0001] The invention relates to a small-piece variable-section leaf spring for a vehicle suspension, especially a simulation algorithm for an initial tangent arc height of a variable-section leaf spring with non-isomorphic oblique lines at the ends. Background technique [0002] With the rapid development of energy saving and lightweight of automobiles, 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 are highly concerned. Compared with the parabolic variable-section leaf spring, the oblique-shaped variable-section leaf spring has simpler processing technology and required equipment, so it has been widely used in vehicle suspension systems. In order to meet the complex force requirements of the end of the first lea...

Claims

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Application Information

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IPC IPC(8): F16F3/02F16F1/18G06F17/50
CPCF16F1/187F16F3/023F16F2226/04F16F2228/06F16F2230/0082F16F2230/40F16F2238/022G06F30/15G06F30/17G06F30/20G06F2119/06
Inventor 周长城于曰伟邵明磊赵雷雷杨腾飞汪晓李晓晗杨铖兆梁宇通
Owner SHANDONG UNIV OF TECH
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