Simulation Calculation Method of Stiffness Characteristic of Leaf Spring Suspension with Non-equal Deviation Frequency and Gradual Stiffness
A technology of simulation calculation and leaf spring suspension, which is applied in the field of simulation calculation method of stiffness characteristics, can solve the problems that the non-equal bias frequency first-level gradient stiffness leaf spring suspension cannot be given, and cannot meet the requirements
Inactive Publication Date: 2019-07-26
SHANDONG UNIV OF TECH
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Problems solved by technology
However, due to the constraints of the calculation of deflection and gradient stiffness in the gradual contact process and the simulation calculation of contact load, the simulation calculation method of the stiffness characteristics of the non-equal bias frequency one-stage gradient stiffness leaf spring suspension has not been given before, which cannot meet the requirements of The rapid development of the vehicle industry and the requirements of modern CAD software development
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Embodiment
[0051] Embodiment: The width b=63mm of a leaf spring suspension with non-equal bias frequency and one-stage gradient stiffness, and the modulus of elasticity E=200GPa; half of the span is half of the active length L 1t =525mm, half of the saddle bolt clamping distance L 0 = 50mm. 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=n+m=5. Among them, the thickness h of each main spring 1 = h 2 = h 3 =8mm, half of the active length of each main spring is L 1t =525mm,L 2t =450mm, L 3t =350mm; half of the clamping length is L 1 =L 1t -L 0 / 2=500mm, L 2 =L 2t -L 0 / 2=425mm, L 3 =L 3t -L 0 / 2=325mm. Thickness h of each secondary spring A1 = h A2 =13mm, half of the working length of each auxiliary spring is L A1t =250mm,L A2t =150mm, half of the clamping length is L A1 =L 4 =L A1t -L 0 / 2=225mm, L A2 =L 5 =L A2t -L 0 / 2=125mm. Main spring initial tangent arc height H gM0 =102mm, ...
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The invention relates to a simulation calculation method for the stiffness characteristics of a non-equal-bias-frequency one-stage gradual stiffness leaf spring suspension, and belongs to the technical field of suspension leaf springs. According to the structural parameters, elastic modulus, and initial tangent arc height design values of the main spring and auxiliary spring of each piece, on the basis of contact load simulation calculation, the present invention can adjust the first-order gradient stiffness of non-equal deviation frequency The stiffness characteristics of leaf spring suspension are simulated and calculated. Through example simulation calculation and prototype stiffness characteristic test, it can be seen that the simulation calculation method of the deflection characteristics of the non-equal bias frequency one-stage gradient stiffness leaf spring suspension provided by the present invention is correct, ensuring that the stiffness characteristics meet the design requirements, which is non-equal The design and characteristic simulation verification of the bias frequency one-stage gradual stiffness leaf spring suspension and the development of CAD software have laid a technical foundation. The method can be used to improve the design level, quality and performance of the product, improve the ride comfort and safety of the vehicle; at the same time, it can also reduce the cost of design and test, and accelerate the speed of product development.
Description
technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a simulation calculation method for stiffness characteristics of a non-equal-bias-frequency first-order gradual stiffness leaf spring suspension. Background technique [0002] In order to meet the strength requirements of the main spring of the first-level gradient stiffness leaf spring, the auxiliary spring usually acts to bear the load as soon as possible to reduce the stress of the main spring, that is, the non-equal bias frequency first-level gradient stiffness leaf spring suspension is used, and the suspension is at The stiffness characteristics under different loads not only affect the suspension bias frequency and vehicle ride comfort, but also affect the suspension static deflection, dynamic deflection, maximum limit deflection and vehicle driving safety; for a given design structure leaf spring suspension stiffness The simulation calculation of the characteristics can ...
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IPC IPC(8): G06F17/50F16F1/18F16F1/26F16F3/02
CPCF16F1/185F16F1/26F16F3/023G06F30/17G06F30/20
Inventor 周长城汪晓于曰伟赵雷雷杨腾飞王凤娟邵明磊
Owner SHANDONG UNIV OF TECH