Reliability Simulation And Test Of Heavy-duty Truck Based On ADAMS

Combined with the Formulating Method of the Customer's Relevant Test Specifications of the Motor Truck Load Carrying Proving Ground. Using template-based modeling method, research for the key subsystems, To build and analysis simulation model. To Analysis and Forecast the Truck Ride and handling. The vehicle performance was analysed by the impulse input test and the automobile controllability and stability test. The trator model was evaluated by the test of physical prototype. Then this article studied the method to build the 3D digital road of Virtual Proving Ground and set up test road database. Base on load cycle from the simulation result of tractor dynamic model running on the digital Belgium road, fatigue life analyse was farther carried out to the shoulder pole beam in the rigid-elastic coupling model of air suspension. A new method for customer correlation reliability test was proposed based on automotive proving ground, and the method can combine the real customer field usage to the vehicle with the enhancement test on proving ground, and avoid the test blindness. Aiming at the data that were tested on the typical road surfaces of the customer and enhancement roads of proving ground, the rain-flow counting method was used to obtain the load distribution matrixes , according to the correlation equation, the cumulative fatigue damage and loading spectrums of the 90% customer and proving ground were optimized and calculated. Through the correlation analysis of the test data, the road surface enhancement coefficient and the reliability test specifications of proving ground were obtained. The test results indicate that the new specifications can predict the potential failures of the load carrying structures quickly, shorten the test cycles, and reduce the test cost and new product development expense, compared with the existing test method.1. Using Template-based Dynamic Modeling Method,Vehicle is decomposed to many subsystems. It is clear to organize large numbers of parts in vehicle assembly. After building the templates of powertrain, front suspension, rear suspension, cab, steering system and tire etc, the trator dynamic model set up by assembling all subsystems through template-based modeling method. The vehicle performance was analysed by the impulse input test and the automobile controllability and stability test.2. Performance AnalysisAfter whole tractor dynamic modeling completed, The tractor dynamic model was evaluated by the impulse input test and the automobile controllability and stability rent altitude to different layer, the program was compiled to build 3D complex digital test road. According to the test road data measured in NONG AN proving ground of Chinese FAW Group Company, the digital road database including many kinds test road was built in computer. The research on VPG exploits the application of vehicle dynamic simulation. test. Study on Human Exposure to Whole-Body Vibration of Aut omotive and handling directional stability. Design Virtual Experiment of Vehicle Using ADAMS. The results of simulation agree well with that of tests so the practicability and credibility of the model is verified.3. Study on the Virtual Test of ReliabilityThe Reliability decides the survival and development of A manufacturer of automotive vehicles,good money will go into the great deal of testing, If base on the Simulation ,it will shorten the time of design,reduce the cost and enhance the work efficiency. This article adduces Delaunay arithmetic for the first time to build the digital reliability test road which can be used in vehicle simulation. Delaunay arithmetic is an important one in the computational geometry subject. By the way of dispart node at diffeTo analysis the fatigue life of the shoulder pole beam in the Air Suspension, a rigid-elastic coupling model was built by importing its mnf file which yielded from NASTRAN software. Base on load cycle from the simulation result of tractor dynamic model running on the digital Belgium road, fatigue analysis carried out using rain- flow counting method.4. Research of the Customer Correlation Reliability Test ProjectAccording to the principle of the customer's use correlation reliability test technology, the automotive load carrying reliability test Implementation related to the customer's use are scientifically formulated. With the analysis of the model stress and limit elements of the load carrying structures and experience, the critical dangerous positions of the structures. Limit element fatigue software are used to carry out the fatigue analysis of the weigh beam and determine its weak position. According to the stress centralization principle of the electric resistance strain gage, stress, displacement and acceleration sensors of the loading structures are laid out. The rain-flow matrix equivalent loading spectrum method is used to treat the test data of the weigh beams of the cabin.5. Research of the Reliability Test Combine Experimental Station with VirtualBase on the optimization theory, combine the customer correlation reliability test project with the virtual test. Weed out unqualified test data and trend. Built mathematical model to optimal the test. In line with the problems existing in the technical specifications of the traditional reliability test, according to the road loading spectrum correlation mathematical model of the customer and proving ground, the automotive load carrying reliability test specifications related to the customer's use are scientifically formulated, which provides the new test method for the determination of the new automotive products and reliability test.