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Design method of free tangent camber height of dual reinforced root unequal-thickness tapered leaf springs

A variable-section, non-equal-thickness technology, applied in spring/shock absorber design features, computer-aided design, design optimization/simulation, etc., can solve the complex calculation of non-equal-thickness variable-section leaf spring stiffness, which has not been given, etc. question

Inactive Publication Date: 2018-06-22
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 searched data, due to the complexity of calculating the stiffness of double-reinforced root non-equal-thickness variable-section leaf springs, the free tangent arc height of each leaf spring has not been given before. design method

Method used

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  • Design method of free tangent camber height of dual reinforced root unequal-thickness tapered leaf springs
  • Design method of free tangent camber height of dual reinforced root unequal-thickness tapered leaf springs
  • Design method of free tangent camber height of dual reinforced root unequal-thickness tapered leaf springs

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Embodiment 1

[0028] Embodiment 1: The width b=60mm of a certain double-strengthened root non-equal-thickness parabolic variable-section leaf spring, and half the effective length L T =575mm, modulus of elasticity E=200GPa, half length L of the straight section of the root clamped by saddle bolt 0 =50mm, horizontal length Δl of oblique section at the end 1 =30mm, the horizontal length of the oblique line section at the root Δl 2 =40mm, the horizontal distance l from the root of the oblique line section at the root to the end point of the leaf spring 2 =L T -L 0 =525mm, the horizontal distance l from the root of the parabola segment to the end point of the leaf spring 2p = l 2 -Δl 2 =495mm. The number of leaf springs n=3, the thickness h of the straight section at the root of each leaf spring 21 =18.5mm, h 22 = 18mm, h 23 =17.5mm; root thickness h of parabola segment 21p = 17.5 mm, h 22p = 17mm, h 23p = 16.5mm, the end thickness h of the parabola segment 11p = 8mm, h 12p = 7mm...

Embodiment 2

[0057] Embodiment 2: the width b=60mm of a certain double-strengthened root non-equal-thickness parabolic variable-section leaf spring, and half the effective length L T =575mm, modulus of elasticity E=200GPa, half length L of the straight section of the root clamped by saddle bolt 0 =50mm, the length of the first slice of the oblique line section at the end Δl 1 =30mm, the length of the first slice of the oblique line section at the root Δl 2 =40mm, the horizontal distance l from the root of the oblique line section at the root to the end point of the leaf spring 2 = L T -L 0 =525mm, the horizontal distance l from the root of the parabola segment to the end point of the leaf spring 2p = l 2 -Δl 2 =495mm. The number of leaf springs n=4, the thickness h of the straight section at the root of each leaf spring 21 = 17mm, h 22 = 16.5mm, h 23 = 16mm, h 24 =16mm; root thickness h of the parabolic segment of each leaf spring 21p = 16mm, h 22p = 15.5mm, h 23p = 15mm, h ...

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Abstract

The invention relates to a design method of the free tangent camber height of dual reinforced root unequal-thickness tapered leaf springs and belongs to the technical field of suspension less-leaf tapered leaf springs. According to the design method, the free tangent camber height of the dual reinforced root unequal-thickness tapered leaf springs can be designed according to the number of the leafsprings, structure parameters of the leaf springs, elasticity modulus, the thicknesses of root pads and end pads, the initial tangent camber height of the first assembled and clamped leaf spring, andthe design required value of pre-clamping stress of the leaf springs. Prototype testing shows that the design method of the free tangent camber height of the dual reinforced root unequal-thickness tapered leaf springs is correct and can obtain the accurate and reliable design value of the free tangent camber height of the leaf springs. By means of the method, the initial tangent camber height ofthe first leaf spring and the pre-clamping stress of the leaf springs can meet the design requirement, the design level and reliability of products and vehicle running safety can be improved, meanwhile, the design and testing cost of the products is reduced, and the product development speed is increased.

Description

technical field [0001] The invention relates to a vehicle suspension with a few variable-section leaf springs, in particular to a design method for the free tangent arc height of a double-reinforced root non-equal-thickness variable-section leaf spring. Background technique [0002] With the implementation of automobile energy-saving and lightweight policies, the leaf springs with variable cross-sections are increasingly popular in vehicle suspension due to their advantages of light weight, high material utilization, no friction 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, in order to meet the requirements of complex stress on the first leaf spring and strengthen the strength of the leaf spring, a double-reinforced non-equal root can be used Thick variable-section leaf spring, that is, th...

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 陈海真周长城赵雷雷杨腾飞杨铖兆李晓晗梁宇通石莹于曰伟
Owner SHANDONG UNIV OF TECH
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