CAE (Computer Aided Engineering) uses computer-aided solutions to analyze structural mechanical properties of engineering or products, and optimize structural properties. The application of CAE technology runs through almost the entire process of truck R&D and design, and plays an increasingly important role in modern truck design. Especially before testing the prototype vehicle, CAE is used to verify the performance of the vehicle, and through optimization and improvement, the risk of vehicle development can be greatly reduced, the development efficiency can be improved, and the development cost can be reduced.
Strength Analysis
Strength is the force required for the structure to deform under the action of external force. The strength value should be kept within the allowable deformation range. The appropriate strength is that the deformation should not be too large. The strength analysis allows us to choose a more suitable material and size range for the truck body.
NVH Analysis
The truck vibrates under the action of external load, and the modal parameters (mode shape, frequency and damping) of the truck structure are identified by finite element analysis. And analyze the noise, vibration and harshness of the truck structure.
Fatigue Durability Analysis
Fatigue durability analysis refers to the time that each main structural component of the vehicle experiences before its function fails under normal operating conditions. The evaluation index is the mileage at the time of failure. The current CAE method is to use the load collected from the road test to calculate the time history of the load on the vehicle body and the joints of key components. Using the finite element method to calculate the stress and strain under the unit load, combined with the fatigue failure test curve of the material, calculate the fatigue life of the body and other key components, thereby reducing the road simulation test.
Crash Data Analysis
In the event of a collision, the truck body structure will absorb relatively high energy. In general traffic accidents, it is necessary to ensure the safety of the occupants and reduce the damage to the vehicle body. All these aspects require the use of CAE technology for simulation modeling analysis.
Flow Analysis
Flow analysis is an analytical method based on computational fluid dynamics (CFD). The study of vehicle aerodynamics will affect the vehicle’s shape, wind resistance, economy, wind noise, etc. A lot of body styling is to get a lower coefficient of aerodynamic drag.