The Research Of The C919 Fuselage Invehicle Suspension System

With the rapid development of our country’s economy, China’s sharp increase of aircraft manufacturing ability of large aircraft development and production of manufacturing has become a top priority. But in today’s international large aircraft development and production of manufacturing capacity is an important symbol of a national airline, is also an important symbol of the country’s overall strength. China is now one of the world’s largest civil aviation market, the C919 large passenger aircraft type is China’s first domestic large aircraft. As an aid in the support of the C919 large aircraft project, developed with independent intellectual property rights of large aircraft fuselage high-speed transport vehicle in the C919, to ensure the security of China’s large aircraft parts transportation and accelerate the process of China’s large aircraft project has an important landmark significance. Therefore, aiming at Yanshan University and Jiangsu Hai Peng special vehicle co LTD. Cooperation developed by "the C919 aircraft fuselage transport trailer developed" the actual project were studied.Main idea of this topic is according to the customer request, for in the design of the C919 transport trailer truck suspension system in the process of debugging problems for design improvement, after the new improved design scheme of system structure parameters and design calculation and selection of key parts, simulation analysis was carried out on the improved system and related structures and the safety and reliability of the system are verified through the field experiment.First of all, the contrast analysis of the C919 transport trailer suspension system to improve the differences and similarities between before and after, to establish the mathematical model of the suspension system before and after improvement, the design calculation of the improved the parameters of the suspension system and the selection of key parts. Comparing the pros and cons of vehicle suspension performance before and after improvement.Secondly, for the improvement of vehicle suspension system, using Pro/E 3 d software of suspension structure and frame of 3 d modeling, and carries on the finite element analysis using ANSYS software, the results fully comply with the design requirements, through the stress and strain experiment and experimental analysis, vibration system completely conform to the requirements of the actual working condition.Finally, the simulation results with the experimental curve contrast, suggests that the indicators meet the design requirements.