A real-time simulation method for in-plane tire flexible ring model

A real-time simulation and realization method technology, applied in design optimization/simulation, instrumentation, geometric CAD, etc., can solve problems such as the inability to accurately express tire ground contact characteristics, increase the nonlinearity of the model, and reduce the calculation efficiency of the model. Real-time, saving time for solving, and calculating accurate results

Active Publication Date: 2022-03-18
JILIN UNIV
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Problems solved by technology

[0005] In the numerous literatures on the tire flexible ring model, the modeling of the mechanical properties of the belt in tension and the modeling of the sidewall and compressed air in the tire are basically linear, but the modeling of the bending properties of the belt and the model solution There is still room for improvement in the algorithm
At present, inverse trigonometric functions are introduced into the modeling of belt bending characteristics, which increases the nonlinearity of the model and reduces the calculation efficiency of the model; Modeling the belt bending characteristics, this modeling method cannot accurately represent the ground contact characteristics of the tire, which is obviously inaccurate

Method used

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  • A real-time simulation method for in-plane tire flexible ring model
  • A real-time simulation method for in-plane tire flexible ring model
  • A real-time simulation method for in-plane tire flexible ring model

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Embodiment Construction

[0020] A method for realizing real-time simulation of an in-plane tire flexible ring model, comprising the following steps:

[0021] One, such as figure 1 As shown, the belt part is discretized into several uniformly distributed mass points m i , mass point m i They are connected by springs along the tire circumference and radial direction, expressing the tensile characteristics of the belt, and the adjacent three mass points m i The connection between them is performed by a bending spring to express the bending characteristics of the belt, and the mass point m i The tire sidewall and the compressed air inside the tire are understood by the spring damping unit along the tire circumference and radial direction with the rim. Such as figure 2 As shown, discretize the tread into a uniform distribution at the mass point m i Between the springs, the contact force between the tire and the road is calculated through the deformation of the spring.

[0022] 2. For the mass point ...

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Abstract

A real-time simulation method for the in-plane tire flexible ring model. The method is to establish a tire flexible ring model, simplify the tire belt part into mass points connected by a series of spring units, and simplify the sidewall part and the compressed air in the tire. form a spring damping unit; when modeling the bending characteristics of the belt part, a linear expression is used to reduce the nonlinearity of the model and improve the calculation efficiency of the model; in the process of solving the model, Newton iteration with second-order convergence speed is used The method and the Newmark method with unconditional convergence characteristics make the model solution speed meet the requirements of real-time simulation.

Description

technical field [0001] The invention relates to a method for realizing real-time simulation of an in-plane tire flexible ring model, belonging to the technical field of tire flexible ring model modeling. Background technique [0002] The tire is the only part of the vehicle in contact with the road surface, which transmits the force of the road to the vehicle. The performance index of the vehicle is closely related to the mechanical characteristics of the tire. Therefore, the vehicle dynamics simulation analysis requires an accurate and efficient tire model. [0003] At present, tire models are divided into the following categories according to different applicable frequency ranges: tire steady-state models suitable for tire motion input frequency below 8Hz; tire rigid ring models suitable for tire motion input frequency below 80Hz; suitable for tire motion A tire flexible ring model with an input frequency higher than 80Hz; theoretically suitable for a tire finite element m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/20G06F119/14
CPCG06F30/15G06F30/20G06F2119/14
Inventor 吴海东黄世庆郭孔辉卢荡
Owner JILIN UNIV
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