Main spring deflection calculation method for high-strength two-level gradually changing stiffness plate spring
A calculation method and technology of high-strength steel plates are applied in the field of vehicle suspension leaf springs, which can solve the problems of not providing a calculation method for high-strength two-stage gradient stiffness leaf springs, and complex deflection calculation of high-strength two-stage gradient stiffness leaf springs. Achieve the effect of speeding up product development, reducing design and testing costs, and improving design level
Inactive Publication Date: 2017-05-31
SHANDONG UNIV OF TECH
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Problems solved by technology
However, since the contact length and the gradual stiffness change with the load during the gradual contact between the main spring and the primary and secondary secondary springs, the calculation of the deflection of the high-strength two-stage gradient stiffness leaf spring is very complicated, not only with the The main spring is related to the structural parameters of the first-level auxiliary spring and the second-level auxiliary spring, and is also related to each contact load. According to the information found, there has been no main spring with high-strength two-stage gradient stiffness leaf spring at home and abroad. Calculation method of deflection
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[0031] 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 number of main reed pieces n=2, the thickness h of each piece of the main reed 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 of each piece of the main spring 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 m 1 = 1, thickness h A11 =11mm, half of the active length is L A11T =360mm, half of the clamping length L A11 =L 3 =L A11T -L 0 / 2=335mm. The number of pieces of secondary secondary spring m 2 = 2, thickness h A21 =h A22 =11mm, half of the active length is L A21T =250mm,L A22T =155mm; half of the clamping length is L A21 =L 4 =L A21T -L 0 / 2=225mm, L A22 =L 5 =L A22T -L 0 / 2=130mm. The total sheet number of primary and secon...
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The invention relates to a main spring deflection calculation method for a high-strength two-level gradually changing stiffness plate spring, and belongs to the technical field of vehicle suspension steel plate springs. The main spring deflection of the high-strength two-level gradually changing stiffness plate spring under different loads can be calculated according to structural parameters of main springs and auxiliary springs, elastic modulus, contact load, idle load and rated load of the high-strength two-level gradually changing stiffness plate spring. According to ANSYS simulation and model machine loading deformation test verification, the main spring deflection calculation method for the high-strength two-level gradually changing stiffness plate spring is correct, and a reliable technical basis is laid for high-strength two-level gradually changing stiffness plate spring design and CAD (computer-aided design) software development. By the method, accurate and reliable main spring deflection calculation values of the high-strength two-level gradually changing stiffness plate spring under different loads can be acquired, and product design level, quality, performances and vehicle driving smoothness are improved. Besides, design and experiment expenses can be 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 with two stages of gradually changing stiffness. Background technique [0002] In order to meet the design requirements of the ride comfort of the vehicle under different loads and the constant gradient bias frequency of the suspension, with the emergence of high-strength steel plate materials, high-strength two-stage gradient stiffness leaf springs can be used, and the two-stage gradient process The suspension bias frequency design is equal to the bias frequency. The calculation of the deflection of the main spring of the high-strength two-stage gradient stiffness leaf spring is a key issue that restricts the design of the tangent arc height of the main and auxiliary springs and the gap between the main and auxiliary springs of the high-strength two-stage gradient stiffness leaf spring. ...
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Login to View More IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/17
Inventor周长城于曰伟赵雷雷汪晓杨腾飞邢玉清邵明磊
OwnerSHANDONG UNIV OF TECH