A Simulation Calculation Method for Bias Frequency Characteristics of High-Strength Level-1 Leaf Spring Suspension System with Gradual Stiffness
A technology of simulation calculation and leaf spring suspension, which is applied in the field of vehicle suspension leaf springs, can solve the problems of complex calculation of gradient clamping stiffness and failure to give high-strength first-level gradient stiffness leaf spring suspension system bias frequency characteristics, etc.
Inactive Publication Date: 2019-08-16
SHANDONG UNIV OF TECH
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Problems solved by technology
However, since the calculation of leaf spring deflection and gradual clamping stiffness in the gradual change process is very complicated, it is also affected by the calculation of the equivalent thickness of the overlapping part, the clamping stiffness of the main spring, the combined clamping stiffness of the main and auxiliary springs, and the reverse calculation of the contact load. Constraints of the problem, according to the research data, there has been no simulation calculation method for the bias frequency characteristics of the high-strength one-stage gradient stiffness leaf spring suspension system at home and abroad.
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Embodiment 1
[0041] Embodiment 1: The width b=63mm of a high-strength level-1 grade gradient stiffness leaf spring, half of the clamping distance L of the saddle bolt 0 =50mm, elastic modulus E=200GPa. The no-load load P of the suspension system 0 =1715N, rated load P N =7227N. The number of main reeds n=3 pieces, the thickness h of each main spring 1 = h 2 = h 3 =7mm, half of the active length is L 1t =525mm, L 2t =461mm, L 3t =399mm, half of the clamping length 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. The number of auxiliary reeds m = 2 pieces, the thickness h of each auxiliary reed A1 = h A2 =12mm, half of the working length of each auxiliary spring is L A1t =350mm,L A2t =225mm, the clamping length of half of each auxiliary spring is L A1 =L 4 =L A1t -L 0 / 2=325mm, L A2 =L 5 =L A2t -L 0 / 2=200mm. The total number of sheets of primary and secondary springs N=5. Main spring initial tangent arc height H gM0 =112.5mm, init...
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The invention relates to a simulation calculation method for bias frequency characteristics of a high-strength, one-stage gradual stiffness leaf spring suspension system, and belongs to the technical field of suspension leaf springs. The present invention can be based on the structural parameters of each main spring and auxiliary spring of the designed high-strength one-level gradual stiffness leaf spring, elastic modulus, initial tangent arc height of the main spring and initial tangent arc height of the auxiliary spring, the leaf spring suspension system No-load load and rated load, the simulation calculation of the deviation frequency characteristics of the high-strength one-stage gradient stiffness leaf spring suspension system under different load conditions is carried out. Using this method, through the simulation calculation and verification of the bias frequency characteristics, the problems in the design of the high-strength one-stage gradient stiffness leaf spring can be found in time, and the design can be improved to ensure that the bias frequency characteristics meet the design requirements of the suspension system, thereby further improving the high strength. The design level, quality and performance of the first-level gradient stiffness leaf spring suspension system can improve the ride comfort and safety of the vehicle; at the same time, it can also reduce design and test costs and speed up product development.
Description
technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a simulation calculation method for the deviation frequency characteristic of a high-strength one-stage gradually changing rigidity leaf spring suspension system. 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, high-strength level one The bias frequency of the gradient stiffness leaf spring suspension system under different loads is not only affected by the structural parameters of each main spring and auxiliary spring, the clamping stiffness of the main spring, the combined clamping stiffness of the main and auxiliary springs, and the magnitude of the load, but also by the The initial tangent arc height of the main spring and auxiliary spring...
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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20
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