Design method for stiffness and contact load of high-strength one-stage gradient-stiffness leaf springs for vehicles
A high-strength, rigidity technology, applied in the direction of spring components, leaf springs, springs, etc. composed of several springs, can solve problems such as unseen, deformation, and complex stiffness calculations
Inactive Publication Date: 2019-03-26
SHANDONG UNIV OF TECH
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Problems solved by technology
Since the gradient stiffness and the suspension gradient bias frequency are not only related to the structure of the high-strength one-stage gradient stiffness leaf spring, but also related to the contact load, at the same time, the calculation of the deformation and stiffness of the main spring and auxiliary spring during the gradual transition process is very complicated. Therefore, most of the previous methods were based on experience and repeated tests to design the stiffness and contact load of the high-strength one-level gradual stiffness leaf spring of the vehicle. Related reports on stiffness and contact load design of stiffness leaf springs
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Embodiment 1
[0029] Example 1: The no-load load P of a high-strength one-level gradient stiffness leaf spring suspension system of a certain vehicle 0 =1715N, rated load P N =7227N, the suspension bias frequency design requirement value f under no-load 00 =2.73Hz, the suspension bias frequency design requirement value f under rated load 0N = 2.45Hz. According to the no-load load and rated load of the high-strength one-stage gradient stiffness leaf spring suspension system, and the suspension bias frequency design requirements under no-load and rated load, the clamping stiffness of the main spring and the combination of the main and auxiliary springs Clamping stiffness, initial contact load and full contact load are designed.
[0030] The design method of the vehicle high-strength one-level gradient rigidity leaf spring stiffness and contact load provided by the example of the present invention, its design process is as follows figure 1 As shown, the specific design steps are as follows...
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The invention relates to a design method for the stiffness and contact load of a high-strength, one-level gradually changing rigidity leaf spring of a vehicle, and belongs to the technical field of suspension leaf springs. According to the no-load load, rated load, no-load bias frequency and rated load bias design requirements of the vehicle suspension system, the present invention can adjust the tightening stiffness of the main spring and the combined tightening of the main spring and the secondary spring of the vehicle's high-strength grade one gradient stiffness leaf spring Stiffness, initial contact and full contact loads are designed. Through the test of prototype and vehicle ride comfort, it can be known that the design method of the stiffness and contact load of the vehicle high-intensity one-level gradually changing stiffness leaf spring provided by the present invention is correct, which lays a solid foundation for the design of high-strength one-level gradually changing stiffness leaf spring and the development of CAD software. At the same time, using this method can improve product design level, product quality and vehicle ride comfort; 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 design method for the rigidity and contact load of a high-strength, first-order gradually changing rigidity leaf spring for a vehicle. Background technique [0002] In order to meet the design requirements of the smoothness 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 one-stage gradient stiffness leaf springs can be used. Since the gradient stiffness and the suspension gradient bias frequency are not only related to the structure of the high-strength one-stage gradient stiffness leaf spring, but also related to the contact load, at the same time, the calculation of the deformation and stiffness of the main spring and auxiliary spring during the gradual transition process is very complicated. Therefore, most of the previous methods were based on experien...
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IPC IPC(8): F16F3/02F16F1/18F16F1/26G06F17/50
CPCF16F1/185F16F1/26F16F3/023F16F2238/022G06F30/17
Inventor 周长城于曰伟赵雷雷汪晓杨腾飞王凤娟邵明磊
Owner SHANDONG UNIV OF TECH