Method for building virtual experiment digital pavement based on pavement scanning data and storage medium

Abstract

The invention discloses a method for establishing a virtual experiment digital pavement based on pavement scanning data and a storage medium. The method comprises: firstly, scanning a test road by utilizing three-dimensional scanning equipment to obtain three-dimensional scanning point cloud; secondly, approximating a road center line by using a fitting curve function, creating two-dimensional curve regular grid points, and then calculating an elevation value of each grid point by using a discrete data point interpolation method; and finally creating a CRG road surface model corresponding to atest road based on the three-dimensional grid points. According to the method, the road surface characteristics such as unevenness, gradient and road center line of a real test road are completely reserved, and the test road in a test field can be converted into a digital road surface. According to the invention, a test road in an actual automobile test field can be digitally processed and converted into a road surface model which can be used as simulation input of a virtual test field.

Description

technical field [0001] The invention belongs to the field of automobile CAE (Computer Aided Engineering) simulation technology, and specifically relates to a method for building a virtual experimental digital road surface based on road surface scanning data, and constructs a CRG (Curved Regular Grid ) curve regular grid road surface model, to achieve the purpose of digital processing of the test road in the proving ground, and used for the input of the pavement model in the simulation analysis of the virtual proving ground. Background technique [0002] In recent years, due to factors such as high cost, long cycle, and lack of prototype vehicle resources in the early stage of development, traditional real vehicle tests have gradually been unable to meet the requirements of economical and efficient product development. With the development of simulation analysis technology and the emergence of tire models suitable for analysis requirements such as handling stability, ride com...

AI Technical Summary

Problems solved by technology

Although this method of describing the height of the road surface based on a certain section can be well applied in ride comfort analysis, it has certain limitations when it is extended to other fields such as fatigue durability analysis.

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