Three-dimensional pavement generating method applying to virtual prototype system
A virtual prototype, three-dimensional technology, applied in the field of vehicle and traffic civil engineering, can solve problems such as inability to accurately reflect driving and road conditions, no universal method for three-dimensional road models, and less research.
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Embodiment 1
[0062] Embodiment 1 Ride comfort analysis of a car
[0063] Using Matlab and Adams as the simulation environment, the process of establishing a general model of a 3D random road surface is as follows: image 3 shown. Through the simulation comparison, the FFT model is selected for research, and it is expanded into a three-dimensional model, and the corresponding road surface files are generated, and then the simulation analysis and research on the driving comfort of the virtual prototype are carried out.
[0064] 1) Theoretical modeling. Extend the existing single-point time-domain model of road surface roughness to a time-domain model of road surface roughness in three-dimensional space;
[0065] 2) Model result output. Write the FFT three-dimensional road surface model program in MATLAB software, and take the condition of a certain road surface as an example to simulate the unevenness of the road surface, and then obtain the coordinate data of the three-dimensional road s...
Embodiment 2
[0105] Example 2 Analysis of road friendliness of heavy goods vehicles
[0106] Taking the World Bank Anhui Highway Project II overloading project, research on multi-domain collaborative modeling and simulation method of road damage under vehicle-road coupling (National Natural Science Foundation Project 50708020) and other projects as examples, the specific implementation of this method is illustrated.
[0107] The rapid development of road traffic and the popularity of heavy trucks will inevitably lead to an increase in road maintenance costs. According to the statistics of my country's Ministry of Communications, the country spends about 30 billion yuan on road maintenance every year, and a large number of overloaded heavy trucks are the main factor of road damage. Therefore, analyzing the damage and damage degree of heavy freight vehicles to expressway pavement and improving the road friendliness of vehicles has become a hot issue of great concern to vehicle design and hig...
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