Simulation computation method of deflection characteristics of high-duty two-leveled alterable stiffness leaf spring
A simulation calculation, high-strength technology, applied in the field of simulation calculation method of deflection characteristics, can solve the problems of complicated calculation of deflection of main spring, not given deflection characteristics of high-strength two-stage gradient stiffness leaf spring, etc., to speed up product development, The effect of reducing design and test costs and improving design level
Inactive Publication Date: 2017-05-24
SHANDONG UNIV OF TECH
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Problems solved by technology
Because the deflection of the main spring is not only related to the structural parameters and loads of the main spring, the first-level auxiliary spring and the second-level auxiliary spring, but also related to each contact load, and the contact length and gradual stiffness in the gradual contact process change with the load , therefore, the calculation of the main spring deflection of the high-strength two-stage gradient stiffness leaf spring is very complicated
For the simulation calculation of the deflection characteristics of a high-strength two-stage gradient stiffness leaf spring with a given design structure, in addition to being restricted by the calculation of the main spring deflection, it is also restricted by the key issue of contact load simulation calculation. , the simulation calculation method for the deflection characteristics of high-strength two-stage gradient stiffness leaf springs has not been given before at home and abroad
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[0041] 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 total number of pieces of the main and auxiliary springs is N=5, where the number of main reeds 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 initial tangent arc height H of the main spring gM0 = 112.2 mm. The number of sheets of the first secondary spring m 1 = 1 piece, thickness h A11 =11mm, half of the active length is L A11T =360mm, half of the clamping length L A11 =L A11T -L 0 / 2=335mm; the initial tangent arc height H of the first secondary spring gA10 = 22.8 mm. The number of pieces of secondary secondary spring m 2 = 2 pieces, the thickness h of each piece of the se...
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The invention relates to a simulation computation method of deflection characteristics of high-duty two-leveled alterable stiffness leaf spring, which belongs to vehicle suspension leaf spring technology field. According to the structure parameters of each main spring and each auxiliary spring, elastic modulus, load rating, the initial tangent arc height design value of the main spring, and the initial tangent arc height design value of the first level auxiliary spring and the second level auxiliary spring, the method can conduct the simulation computation to the deflection characteristics of high-duty two-leveled alterable stiffness leaf spring in different loads. The simulation and prototype testing can prove that the method is right. Utilizing the method, we can get an accurate and reliable simulation computation value of deflection characteristics. It is guaranteed that the initial tangent arc height of the leaf spring and the tangent arc height in load rating and the maximum deflection can meet design requirements. The simulation computation method of deflection characteristics of high-duty two-leveled alterable stiffness leaf spring has the advantages of improving the design, quality and performance of productions, and reducing design and testing expenses and accelerates product development speed.
Description
technical field [0001] The invention relates to a simulation calculation method for the deflection characteristics of a leaf spring of a vehicle suspension, especially a high-strength two-stage gradually changing stiffness leaf spring. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength two-stage gradient stiffness leaf springs can be used for vehicle suspension, so as to further meet the design requirements of vehicle ride comfort and suspension gradient bias frequency under different loads. Among them, The deflection characteristics of leaf springs with gradual stiffness under different loads not only affect the leaf spring gradient stiffness, suspension bias frequency and ride comfort, but also affect the initial tangent arc height of the leaf spring, the remaining tangent arc height under rated load, and Simulation verification of maximum limit deflection design. Because the deflection of the main spring is not only rel...
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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20
Inventor 周长城赵雷雷于曰伟汪晓杨腾飞邢玉清王凤娟
Owner SHANDONG UNIV OF TECH
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