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Method for performing simulating calculation on clamping end point force of double strengthening end part non-isostructural variable section plate springs

A technology of simulation calculation and reinforcement end, applied in the direction of calculation, design optimization/simulation, special data processing applications, etc. It can reduce the design and test costs, improve the design level, and speed up the development speed.

Inactive Publication Date: 2018-04-24
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 information obtained, it is known that the calculation of the clamping stiffness of each leaf spring of the double-reinforced end non-equal variable-section leaf spring is very complicated, and the simulation calculation of the initial tangent arc height of each leaf spring after being clamped by assembly However, the simulation calculation method of the clamping end force of the double-reinforced end non-equal structure variable-section leaf spring has not been given before.

Method used

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  • Method for performing simulating calculation on clamping end point force of double strengthening end part non-isostructural variable section plate springs
  • Method for performing simulating calculation on clamping end point force of double strengthening end part non-isostructural variable section plate springs
  • Method for performing simulating calculation on clamping end point force of double strengthening end part non-isostructural variable section plate springs

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: The width b=60mm of a parabolic variable-section leaf spring of a non-equal configuration at the end of a certain pair of reinforcements, 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 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 length Δl of the 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 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 2 =18mm, root thickness h of parabola segment 2p = 17mm, the end thickness h of the parabola segment 11p = 8mm, h 12p = 7mm, h 13p =6mm, the thickness h of th...

Embodiment 2

[0054] Embodiment 2: The width b=60mm of a parabolic variable-section leaf spring of a non-equal configuration at the end of a certain pair of reinforcements, 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 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 length Δl of the 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 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 2 = 16mm, root thickness h of parabola segment 2p =15mm, the end thickness h of the parabolic segment of each leaf spring 11p = 7mm, h 12p =6.5mm, h 13p = 6mm...

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Abstract

The invention relates to a method for performing simulating calculation on clamping end point force of double strengthening end part non-isostructural variable section plate springs, and belongs to the technical field of suspension frame few-sheet variable section plate springs. The clamping end point of each plate spring after assembling and clamping of double strengthening end part non-isostructural variable section plate springs is subjected to simulating calculation according to the number of the plate springs, the structure parameter of each plate spring, the design value of the free tangent line arc height, the elastic modulus and the thickness of the pads on the root part and the end part. Model machine tests show that the method for performing simulating calculation on the clampingend point force of the double strengthening end part non-isostructural variable section plate springs, which is provided by the invention, is correct, accurate and reliable simulating calculation value of the clamping end point force of each plate spring can be obtained, and reliable technical foundation is laid for simulating calculation of the pre-clamping stress of each plate spring. By the method, the accurate and reliable simulating calculation value of the pre-clamping force of each equal-thickness main spring after assembling and clamping of the three-grade gradually-changed rigidity plate springs can be obtained, the design level of the product is increased, the reliability is improved, the service life is prolonged and the vehicle driving safety is improved; meanwhile, the designand test expanses of the product are reduced and the development speed of the product is increased.

Description

technical field [0001] The invention relates to a simulation calculation method for the clamping end point force of a plate spring with a small number of variable cross-sections in a suspension of a vehicle, especially a double-reinforced end non-equal structure 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 great attention to it, and it has been widely used in vehicle suspension systems. In order to strengthen the strength of the leaf spring, an inclined root section is added between the straight section and the parabolic section at the root of the leaf spring. An oblique sect...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/17G06F30/20
Inventor 周长城赵雷雷于曰伟杨铖兆李晓晗梁宇通毛少坊汪晓杨腾飞
Owner SHANDONG UNIV OF TECH
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