With the rapid advancement of computer virtual reality technology, the demand for simulation-based intelligent driving systems in the domains of roads, traffic, vehicles, and safety has become increasingly prominent. However, the closed nature of current technologies, high costs, limited application scenarios, and significant discrepancies between simulation results and real-world outcomes have constrained the progress and application of driving simulation technology. In response to these challenges, this paper presents the development of virtual reality intelligent driving simulation software using the open-source Unity3D physics engine. By integrating engineering design and 3D modeling, we have constructed an open-source driving simulation system that offers realistic simulation effects, flexible application scenarios, and the potential for further development.
In order to establish an around view monitoring system (AVMS) evaluation method suitable for China's transportation environment, standard requirements, and detection technology level, this article proposes typical testing scenarios and key indicators for AVMS based on the causes of commercial vehicle accidents in China, the operating principles of AVMS, and domestic and foreign AVMS standards such as GB/T 39265-2020. And based on China's testing technology level, propose an AVMS testing plan that meets China's technical level and regulatory requirements. This article not only improves the evaluation method of Chinese AVMS, but also provides reference for the revision of Chinese AVMS standards and system development.
To study the influence of tire parameters on automotive ride comfort, the sensitivity of each parameter is calculated from a control variable method. Based on the tire test data, this paper establishes the CDTire simulation model. The virtual simulation of automotive ride comfort is conducted by combining multibody dynamics with virtual pavement technology. After comparing the results of test and simulation, the rationality and accuracy of the model are verified and the tire parameter variables are thus designed according to the control variable method. The sensitivity of the results is analyzed to obtain the influence degree of each tire parameter on the automotive ride comfort.
In order to avoid battery damage under extreme working conditions such as vehicle collision, which leads to the safety problems of new energy vehicles, the mechanical properties of a battery module under extrusion condition were studied in this paper. Based on finite element method, the simulation platform of battery pack extruded by sphere and cylinder is established. Maximum strain of structure is obtained, from which the end plate, side plate and busbar are identified as the most deformed components. Excessive deformation reveals the risk of damage to the battery. Therefore, 5 proposals on structural optimization are summarized to enhance the mechanical performance of this battery module.
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