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Simulation calculating method of load deflection characteristics of high-strength first-grade rigidity-gradient plate spring

A technology of simulation calculation and load deflection, applied in the field of vehicle suspension leaf springs, can solve the problems of complicated calculation of gradient stiffness and the failure to provide load deflection characteristics of high-strength first-grade gradient stiffness leaf springs, and achieve the effect of improving the design level.

Inactive Publication Date: 2017-04-26
SHANDONG UNIV OF TECH
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Problems solved by technology

However, since the calculation of leaf spring deflection and gradient stiffness in the gradual change process is very complicated, and is restricted by the calculation of the equivalent thickness of the overlapping part and the key issues of contact load reverse calculation, according to the information obtained, no high Simulation Calculation Method of Load-deflection Characteristics of Leaf Spring with Gradual Stiffness of Grade One Strength

Method used

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  • Simulation calculating method of load deflection characteristics of high-strength first-grade rigidity-gradient plate spring
  • Simulation calculating method of load deflection characteristics of high-strength first-grade rigidity-gradient plate spring
  • Simulation calculating method of load deflection characteristics of high-strength first-grade rigidity-gradient plate spring

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Embodiment

[0036] Embodiment: the width b=63mm of a certain high-strength one-level gradual stiffness leaf spring, half L of the saddle bolt clamping distance 0 =50mm, elastic modulus E=200GPa. The number of main reeds is n=3, the number of secondary reeds is m=2, and the total number of primary and secondary reeds is N=5. Among them, the thickness h of each main spring 1 =h 2 =h 3 =7mm, half of the active length of each main spring is L 1t =525mm,L 2t =461mm, L 3t =399mm; half of the clamping length of each main spring is L 1 = L 1t -L 0 / 2=500mm, L 2 = L 2t -L 0 / 2=436mm, L 3 = L 3t -L 0 / 2=374mm. Thickness h of each secondary spring A1 = h A2 =12mm, half of the working length of each auxiliary spring is L A1t =350mm, L A2t =250mm, the clamping length of half of each auxiliary spring is L A1 = L A1t -L 0 / 2=325mm, L A2 = L A3t -L 0 / 2=225mm. Clamping stiffness of main spring K M =51.3N / mm, total composite clamping stiffness K of primary and secondary springs ...

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Abstract

The invention relates to a simulation calculating method of load deflection characteristics of a high-strength first-grade rigidity-gradient plate spring, and belongs to the technical field of suspension steel plate springs. The method can perform simulation calculation for the load deflection characteristics of the high-strength first-grade rigidity-gradient plate spring according to structural design parameters of a main spring and a secondary spring, the reinforced rigidity of the main spring, the compound reinforced rigidity of the main and secondary springs, high initial tangent arcs of the main spring and the secondary spring, elastic modulus and rared loads. Known through comparison between a deflection simulation calculation value of the main spring and a design value under rated loads, the simulation calculating method of the load deflection characteristics of the high-strength first-grade rigidity-gradient plate spring is correct; the accurate and reliable deflection simulation calculation value can be obtained; the reliable technical foundation is laid for simulation calculation of the maximum limiting deflection and a gap of the main and secondary springs of the high-strength first-grade rigidity-gradient plate spring; and meanwhile, the method can be used for improving the product design level, quality and performances, can reduce the design and experience testing costs, and quickens the product development speed.

Description

technical field [0001] The invention relates to a simulation calculation method of the load deflection characteristic of a leaf spring of a vehicle suspension, especially a high-strength one-stage gradual stiffness leaf spring. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength one-level gradient stiffness leaf springs can be used to meet the design requirements of vehicle ride comfort and suspension gradient bias frequency under different loads. Among them, gradient stiffness leaf springs The variation characteristics of the deflection with the load not only affects the tangent arc height of the main and auxiliary springs, but also affects the bias frequency of the suspension system and the ride comfort of the vehicle. Therefore, for a high-strength grade one graded stiffness leaf spring with given design structural parameters, whether it meets the design requirements of the load deflection characteristics, the load deflec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/18G06F17/50
CPCF16F1/185F16F2230/00F16F2238/022G06F30/17G06F30/20
Inventor 周长城赵雷雷刘灿昌汪晓杨腾飞邵明磊王凤娟
Owner SHANDONG UNIV OF TECH
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