Calculation method for main spring deflection of high-strength three-level gradual change rigidity plate spring

A calculation method and high-strength steel plate technology, applied in the field of vehicle suspension leaf springs, can solve the complex calculation of the main spring deflection of high-strength three-stage gradient leaf springs, and the calculation method for high-strength three-stage gradient stiffness leaf springs has not been given, etc. question

Inactive Publication Date: 2017-05-24
SHANDONG UNIV OF TECH
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Problems solved by technology

Then, since the deflection of the main spring is not only related to the structure and load of the main spring and auxiliary springs at all levels, but also related to the size of the contact load, the calculation of the deflection of the main spring of the high-strength three-stage gradient leaf spring is very complicated. It can be seen that there is no reliable calculation method for the main spring deflection of the high-strength three-stage gradient stiffness leaf spring at present at home and abroad.

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  • Calculation method for main spring deflection of high-strength three-level gradual change rigidity plate spring
  • Calculation method for main spring deflection of high-strength three-level gradual change rigidity plate spring
  • Calculation method for main spring deflection of high-strength three-level gradual change rigidity plate spring

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Embodiment

[0037] Embodiment: the width b=63mm of a certain high-strength three-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 pieces of the main spring 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 number of sheets of the first secondary spring n 1 = 1, thickness h A11 =8mm, half of the active length is L A11T =350mm, half of the clamping length is L A11 = L 3 = L A11T -L 0 / 2=325mm. The number of pieces of the secondary secondary spring n 2 =1, thickness h A21 =13mm, half of the active length is L A21T =250mm, half of the clamping length is L A21 = L 4 = L A21T -L 0 / 2=225mm. The number of sheets of the ...

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Abstract

The invention relates to a calculation method for main spring deflection of a high-strength three-level gradual change rigidity plate spring, and belongs to the technical field of vehicle suspension steel plate spring. The method can calculate the main spring deflection of the high-strength three-level gradual change rigidity plate spring under different loads according to structure parameters of main springs and auxiliary springs, elastic modulus, rated loads and contact loads. Simulation and development tests show that calculated values of the main spring deflection are coincided to development test values, so that the calculation method of the main spring deflection of the high-strength three-level gradual change rigidity plate spring is right, and a reliable technological base is provided for design of the high-strength three-level gradual change rigidity plate spring. By the aid of the method, design level, quality and performance of products can be improved, initial tangent arc heights of the main springs and the auxiliary springs, three-level gradual change gaps and the contact loads meet design requirements, driving smoothness of vehicles is improved, design and test cost are reduced, and product development is accelerated.

Description

technical field [0001] The invention relates to a method for calculating the deflection of a main spring of a leaf spring of a vehicle suspension, especially a leaf spring of high strength and three grades of gradually changing stiffness. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength three-stage gradient leaf springs can be used to meet the design requirements of suspension gradient stiffness and suspension bias frequency under different loads, and further improve vehicle ride comfort. , the deflection calculation is the basis for the design of the initial tangent arc height of the main spring and the secondary springs of each level and the three-stage gradient gap design of the high-strength three-stage gradient leaf spring. Then, since the deflection of the main spring is not only related to the structure and load of the main spring and auxiliary springs at all levels, but also related to the size of the contact load...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20Y02T90/00
Inventor周长城朱召辉赵雷雷杨腾飞汪晓王凤娟邵明磊
OwnerSHANDONG UNIV OF TECH