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Modal tire modeling method for whole-vehicle vibration noise simulation

A technology of vibration noise and modeling methods, applied in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2015-12-09
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology

However, this method has disadvantages in the product development process, and cannot realize the advantages of CAE technical performance control in the early stage of product development

Method used

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  • Modal tire modeling method for whole-vehicle vibration noise simulation
  • Modal tire modeling method for whole-vehicle vibration noise simulation
  • Modal tire modeling method for whole-vehicle vibration noise simulation

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] A modal tire modeling method for vehicle vibration and noise simulation, characterized in that under the set load and tire pressure conditions, an accurate tire finite element model is obtained through the actual structural size and material properties of the tire, and then through The reduction converts the tire finite element model into a tire reduction model for vehicle linear analysis. The tire reduction model matches the vehicle NVH finite element model, so that the tire model and vibration and noise performance simulation can be carried out in NASTRAN software, providing road Vibration and noise performance simulation provides a new method, including at least the following steps:

[0022] S1. Under the conditions of set load and tire pressure, according to the design geometric parameters and material characteristics of the tire, use the fin...

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Abstract

The invention relates to a modal tire modeling method for whole-vehicle vibration noise simulation. Under set loads and tire pressure, an accurate tire finite element model is obtained through the actual structure and size and material property of a tire, the tire finite element model is converted into a tire reduction model for whole-vehicle linear analysis through reduction, the tire reduction model and the whole-vehicle NVH finite element model are matched, and therefore the tire model and vibration noise performance simulation are conducted in NASTRAN software, and a new method is provided for road vibration noise performance simulation. The modal tire modeling method is an engineering tire modeling method, and by automatically reducing the tire integrated finite element model, an engineer can establish the tire finite element model through the tire modeling method; meanwhile, the modal tire model for whole-vehicle vibration noise virtual simulation is obtained through an automatic reduction program, and the key technology for stimulating inside-vehicle vibration noise virtual simulation on a road surface is achieved.

Description

technical field [0001] The invention relates to a modal tire modeling method for vehicle vibration and noise simulation, and belongs to the technical field of modal tire modeling. Background technique [0002] When the car is running at a constant speed on a relatively rough road, the excitation generated by the unevenness of the road is transmitted to the car body structure through the tires, and finally generates vibration and noise responses in the car. Due to the characteristics of the tire itself, the excitation can be filtered or amplified when it passes through the tire during the excitation transmission process on the road surface. Therefore, the structure of the tire greatly affects the NVH performance of the vehicle under the excitation of the road surface. In the field of simulation, when the vehicle vibration and noise simulation calculation is carried out by loading the road surface roughness spectrum, it is necessary to establish an accurate tire model to meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 李龙王卓陈乾乾
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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