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Simulation Calculation Method of Deflection Characteristics of High-Strength Two-Stage Gradual Stiffness Leaf Spring

A simulation calculation, high-strength technology, applied in the field of vehicle suspension leaf springs, can solve the problems of complicated calculation of the deflection of the main spring and not given the deflection characteristics of high-strength two-stage gradient stiffness leaf springs, so as to speed up product development and reduce Design and test costs, the effect of improving the design level

Inactive Publication Date: 2020-01-31
SHANDONG UNIV OF TECH
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  • Summary
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  • Application Information

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Problems solved by technology

Because the deflection of the main spring is not only related to the structural parameters and loads of the main spring, the first-level auxiliary spring and the second-level auxiliary spring, but also related to each contact load, and the contact length and gradual stiffness in the gradual contact process change with the load , therefore, the calculation of the main spring deflection of the high-strength two-stage gradient stiffness leaf spring is very complicated
For the simulation calculation of the deflection characteristics of a high-strength two-stage gradient stiffness leaf spring with a given design structure, in addition to being restricted by the calculation of the main spring deflection, it is also restricted by the key issue of contact load simulation calculation. , the simulation calculation method for the deflection characteristics of high-strength two-stage gradient stiffness leaf springs has not been given before at home and abroad

Method used

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  • Simulation Calculation Method of Deflection Characteristics of High-Strength Two-Stage Gradual Stiffness Leaf Spring
  • Simulation Calculation Method of Deflection Characteristics of High-Strength Two-Stage Gradual Stiffness Leaf Spring
  • Simulation Calculation Method of Deflection Characteristics of High-Strength Two-Stage Gradual Stiffness Leaf Spring

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Embodiment

[0040] Embodiment: the width b=63mm of a certain high-strength two-stage gradient stiffness leaf spring, half L of the saddle bolt clamping distance 0 =50mm, elastic modulus E=200GPa. The total number of pieces of the main and auxiliary springs is N=5, where the number of main reeds is n=2, and the thickness of each piece of the main spring is h 1 = h 2 =8mm, half of the active length of each leaf of the main spring is L 1T =525mm,L 2T =450mm; half of the clamping length is L 1 =L 1T -L 0 / 2=500mm, L 2 =L 2T -L 0 / 2=425mm; the initial tangent arc height H of the main spring gM0 = 112.2mm. The number of sheets of the first secondary spring m 1 = 1 piece, thickness h A11 =11mm, half of the active length is L A11T =360mm, half of the clamping length L A11 =L A11T -L 0 / 2=335mm; the initial tangent arc height H of the first secondary spring gA10 = 22.8 mm. The number of pieces of secondary secondary spring m 2 = 2 pieces, the thickness h of each piece of the sec...

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Abstract

The invention relates to a simulation calculation method for the deflection characteristics of a high-strength two-stage gradually changing stiffness leaf spring, and belongs to the technical field of vehicle suspension leaf springs. According to the structural parameters, modulus of elasticity, rated load, initial tangent arc height design value of the main spring and the initial tangent arc height design value of the first stage and the second stage auxiliary spring according to the present invention, The deflection characteristics of the high-strength two-stage gradient stiffness leaf spring under different loads are simulated and calculated. Through simulation and prototype test verification, it can be seen that the simulation calculation method of the deflection characteristics of the high-strength two-stage gradient stiffness leaf spring provided by the present invention is correct. Using this method, accurate and reliable simulation calculation values ​​of deflection characteristics can be obtained to ensure that the initial tangent arc height of the leaf spring, the remaining tangent arc height under rated load and the maximum limit deflection meet the design requirements, thereby improving the design level, quality and performance of the product ; At the same time, reduce design and test costs, speed up product development.

Description

technical field [0001] The invention relates to a simulation calculation method for the deflection characteristics of a leaf spring of a vehicle suspension, especially a high-strength two-stage gradually changing stiffness leaf spring. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength two-stage gradient stiffness leaf springs can be used for vehicle suspension, so as to further meet the design requirements of vehicle ride comfort and suspension gradient bias frequency under different loads. Among them, The deflection characteristics of leaf springs with gradual stiffness under different loads not only affect the leaf spring gradient stiffness, suspension bias frequency and ride comfort, but also affect the initial tangent arc height of the leaf spring, the remaining tangent arc height under rated load, and Simulation verification of maximum limit deflection design. Because the deflection of the main spring is not only rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/17
CPCG06F30/17G06F30/20
Inventor 周长城赵雷雷于曰伟汪晓杨腾飞邢玉清王凤娟
Owner SHANDONG UNIV OF TECH
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