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Simulating calculation method of preclamping stress of enhanced-root non-isostructural-end variable-section leaf spring

A technology of simulation calculation and strengthening end, which is applied in the direction of calculation, design optimization/simulation, special data processing application, etc., can solve the problem of complex calculation of clamping stiffness of non-isomorphic parabolic variable-section leaf spring at the strengthening end, and the root has not been given Strengthen the problems of non-isostructural and variable cross-section leaf springs at the end to speed up product development, reduce design and test costs, and improve the design level

Inactive Publication Date: 2018-06-12
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 the non-isomorphic parabolic variable-section leaf spring at the end of each sheet root reinforcement is very complicated, and it is affected by the clamping stress of each leaf spring and the structure and clamping stiffness of each leaf spring. , the relationship between the free tangent arc height and the initial tangent arc height, and the constraints of the simulation calculation of the initial tangent arc height of each leaf spring after assembly and clamping, the root reinforcement end non-isosteric variable section leaf spring has not been given before. Simulation Calculation Method of Clamping Stress

Method used

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  • Simulating calculation method of preclamping stress of enhanced-root non-isostructural-end variable-section leaf spring
  • Simulating calculation method of preclamping stress of enhanced-root non-isostructural-end variable-section leaf spring
  • Simulating calculation method of preclamping stress of enhanced-root non-isostructural-end variable-section leaf spring

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Effect test

Embodiment 1

[0032] Embodiment one: the width b=60mm of a non-equal configuration parabolic variable-section leaf spring at the end of a certain root reinforcement, and half the active length L of each leaf spring T =575mm, half the length L of the straight section of the root clamped by the saddle bolt 0 =50mm, the horizontal length of the oblique line section Δl=30mm, the horizontal distance l from the root of the oblique line section to the end point of the leaf spring 2 = L T -L 0 =525mm, the distance from the root of the parabola segment to the end point of the main spring l 2p = l 2 -Δl=495mm, modulus of elasticity 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, root thickness h of parabola segment 2p = 17mm, the thickness h of the straight section at the end of each leaf spring 11 = 9mm, h 12 = 8mm, h 13 = 8mm. Thickness ratio of oblique line segment of each leaf spring γ=h 2p / h 2 =0.9444, the th...

Embodiment 2

[0065] Embodiment two: the width b=60mm of a non-equal configuration parabolic variable-section leaf spring at the end of a certain root reinforcement, and half the active length L of each leaf spring T =575mm, half the length L of the straight section of the root clamped by the saddle bolt 0 =50mm, the horizontal length of the oblique line section Δl=30mm, the horizontal distance l from the root of the oblique line section 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 main spring 2p = l 2 -Δl=495mm, modulus of elasticity 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, root thickness h of parabola segment 2p = 15.2mm, the thickness h of the straight section at the end of each leaf spring 11 = 8mm, h 12 =7.5mm, h 13 =7mm, the thickness ratio of the oblique segment of each leaf spring γ=h 2p / h 2...

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Abstract

The invention relates to a simulating calculation method of preclamping stress of an enhanced-root non-isostructural-end variable-section leaf spring and belongs to the technical field of less-laminated leaf springs for suspensions. According to the number of leaf spring laminations, elastic modulus, root and end pad thicknesses, structural parameters of the leaf spring laminations and design value of free tangent arc height, it is possible to perform simulating calculation on preclamping stress for each leaf spring lamination after the assembly and clamping of an enhanced-root non-isostructural-end parabolic variable-section leaf spring. Prototype testing may show that the simulating calculation method of preclamping stress of the enhanced-root non-isostructural-end variable-section leafspring is accurate, accurate and reliable simulating calculated value of preclamping stress can be acquired, and a reliable technical process is provided for the simulating calculation of preclampingstress. By using the method, it is possible to ensure that preclamping stress of each leaf spring lamination meets the simulating calculated value, increase product design level, improve reliability,extend the service life and improve vehicle driving safety; in addition, design and test expenditures are cut down, and product development speed is increased.

Description

technical field [0001] The invention relates to a simulation calculation method for the pre-clamping stress of a few variable-section leaf springs of a vehicle suspension, especially a non-equal structure variable-section leaf spring at the root reinforcement end. 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 strengthen the strength of the leaf spring root and meet the complex force requirements of the end of the first leaf spring, it can be used in An oblique segment is added between the straight sect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 周长城于曰伟毛少坊赵雷雷汪晓杨腾飞杨铖兆梁宇通李晓晗
Owner SHANDONG UNIV OF TECH
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