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Design method of arc height of few-leaf two-end reinforced type plate spring with non-equal-structure end parts

A technology of leaf springs and design methods, applied in springs, leaf springs, springs/shock absorbers, etc., can solve the problems of difficult analysis and calculation, complex structure types of leaf springs, etc.

Inactive Publication Date: 2017-02-08
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the structural type of the two-end-reinforced small-leaf variable-section leaf spring, it is very difficult to analyze and calculate it. According to the research data, there has been no reliable end non-isomorphic few-leaf spring at home and abroad. Design Method of Arc Height of Leaf Spring with Reinforced Both Ends

Method used

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  • Design method of arc height of few-leaf two-end reinforced type plate spring with non-equal-structure end parts
  • Design method of arc height of few-leaf two-end reinforced type plate spring with non-equal-structure end parts
  • Design method of arc height of few-leaf two-end reinforced type plate spring with non-equal-structure end parts

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Experimental program
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Embodiment 1

[0028] Embodiment 1: The number of sheets N=2 of a certain few sheets of both ends reinforced variable-section leaf springs, wherein, half the length L of each sheet spring M =575mm, width b=60mm, thickness h of the straight section at the root 2M =11mm, the end thickness h of the oblique line section at the root 2Mp =10.20mm, half of the installation distance l 3 =55mm, the length Δl of the oblique section at the root 2 = 30mm, length Δl of oblique section at the end 1 =30mm, the distance l from the root of the oblique line section at the root to the end point of the spring 2M =L M -l 3=520mm, the distance from the root of the parabola segment to the end point of the spring l 2Mp = L M -l 3 -Δl 2 =490mm, elastic modulus E=200GPa, the thickness ratio of the oblique line section at the root of each leaf spring γ M = h 2Mp / h 2M =0.93; The end thickness h of the parabolic segment of the first piece of spring 1Mp1 =6mm, that is, the thickness ratio of the parabola se...

Embodiment 2

[0048] Embodiment two: the sheet number N=2 of a certain few sheet two ends reinforced variable section leaf springs, wherein, the half length L of each sheet spring M =600mm, width b=60mm, thickness h of the straight section at the root 2M =12mm, the end thickness h of the oblique line section at the root 2Mp =11mm, half of the installation distance l 3 =60mm, the length Δl of the oblique section at the root 2 = 30mm, length Δl of oblique section at the end 1 =30mm, the distance l from the root of the oblique line section at the root to the end point of the spring 2M = L M -l 3 =540mm, the distance from the root of the parabola segment to the end point of the spring l 2Mp = L M -l 3 -Δl 2 =510mm, elastic modulus E=200GPa, the thickness ratio of the oblique line section at the root of each leaf spring γ M = h 2Mp / h 2M =0.92; The end thickness h of the parabolic segment of the first leaf spring 1Mp1 =7mm, that is, the thickness ratio of the parabola segment β 1 =...

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Abstract

The invention relates to a design method of an arc height of a few-leaf two-end reinforced type plate spring with non-equal-structure end parts and belongs to the technical field of suspension plate springs. According to the design method, an initial tangent arc height of the few-leaf two-end reinforced type plate spring with the non-equal-structure end parts can be designed according to structure parameters, an elastic modulus, a rated load and residual tangent arc height design requirement values under the rated load of each spring. Known through a prototype loading deformation experimental test, the design method of the arc height of the few-leaf two-end reinforced type plate spring with the non-equal-structure end parts provided by the invention is correct, thus accurate and reliable initial tangent arc height design values can be obtained, and reliable technical foundation is laid for design of the few-leaf two-end reinforced type plate spring with the non-equal-structure end parts and CAD software development. By utilizing the method, the design level, the quality, and the performance of a product and the vehicle ride performance can be improved, the product design cost and the experimental test cost are also lowered, and the development speed of the product is accelerated.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a method for designing the arc height of a leaf spring of a few-piece end-reinforced leaf spring with non-isostructural ends. Background technique [0002] With the rapid development of energy saving, comfort, light weight and safety of automobiles, leaf springs with variable cross-sections have light weight, high material utilization, no friction or small friction between sheets, low vibration and noise, and long service life. Advantages, it is increasingly concerned by vehicle suspension experts, manufacturers and vehicle manufacturers, and has been widely used in vehicle suspension systems. Usually, in order to meet the design requirements of processing technology, stress intensity, stiffness and lug thickness, a small number of variable cross-section leaf springs are processed into parabolic, oblique, root reinforced, end reinforced, and both ends reinforced types. In addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/18G06F17/50
CPCF16F1/185F16F2238/022G06F30/17
Inventor 周长城邵明磊于曰伟王凤娟杨腾飞汪晓赵雷雷
Owner SHANDONG UNIV OF TECH