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Simulation calculation method for force of clamped ends of root-reinforced variable-section plate springs with non-homo-structural ends

A technology of simulation calculation and reinforcement end, applied in the direction of calculation, design optimization/simulation, special data processing application, etc. The calculation of the clamping stiffness of the variable-section leaf spring is complicated, so as to reduce the design and test costs, improve the design level, and speed up the development speed.

Inactive Publication Date: 2018-07-13
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 information obtained, the calculation of the clamping stiffness of the non-isomorphic parabolic variable-section leaf spring at the reinforced end of each leaf is very complicated, and it is affected by the clamping end force 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 non-uniform variable section leaf spring clamp at the end of the root reinforcement has not been given before. Simulation Calculation Method of Tight End Point Force

Method used

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  • Simulation calculation method for force of clamped ends of root-reinforced variable-section plate springs with non-homo-structural ends
  • Simulation calculation method for force of clamped ends of root-reinforced variable-section plate springs with non-homo-structural ends
  • Simulation calculation method for force of clamped ends of root-reinforced variable-section plate springs with non-homo-structural ends

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Embodiment 1

[0028] Embodiment 1: the width b=60mm of a non-equal configuration parabolic variable-section leaf spring at the reinforced end of a certain root, and half the effective length L 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 leaf spring 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 thickness rat...

Embodiment 2

[0054] Embodiment 2: the width b=60mm of a non-equal structure parabolic variable-section leaf spring at the reinforced end of a certain root, and half the effective length L 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 = LT -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=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, h 14 = 6.5 mm. Thickness ratio of oblique line segment of each leaf spring γ=h 2p / h 2 = 0.95. The...

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Abstract

The invention relates to a simulation calculation method for force of clamped ends of root-reinforced variable-section plate springs with non-homo-structural ends and belongs to the technical field ofsuspension few-leaf variable-section plate springs. According to the number of the plate springs, structure parameters of each plate spring, the design value of free tangent line camber height, elasticity modulus and the thickness of root gaskets and end gaskets, simulation calculation is conducted on the force of the clamped end of each plate spring after the root-reinforced parabolic variable-section plate springs with the non-homo-structural ends are assembled and clamped. It is shown in a prototype testing that the provided simulation calculation method for the force of the clamped ends of the root-reinforced variable-section plate springs with the non-homo-structural ends is correct, an accurate reliable simulation calculation value of the force of the clamped end of each plate spring can be obtained, and a reliable technical base is laid for simulation calculation of preclamping stress of each plate spring. By means of the method, the design standard and reliability of a productcan be improved, the service life of the product can be prolonged, and the automobile driving safety can be improved. Meanwhile, the design and experiment expenses of the product are also 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 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...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20
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