Lightweight Design Of Sub Frame And Movement Simulation Of Feeding Mechanism In Asphalt Pavement Maintenance Vehicle

With the rapid development of road traffic,the highway traffic mileage in China has been ranked second in the world.The road damage has caused adverse effects to transport efficiency and safety,so the maintenance of the highway is particularly important.Asphalt pavement maintenance vehicle is a kind of special vehicle which is designed and manufactured for repairing the road.The domestic automobile manufacturers have developed various types of asphalt pavement maintenance vehicles to meet the market demand for road maintenance.In order to improve the efficiency of asphalt pavement maintenance vehicle,energy saving and environmental protection level,optimize the performance of the product,it is necessary to do in-depth analysis and research of the asphalt pavement maintenance vehicle sub frame and the feeding mechanism by CAE technology.The research is based on certain asphalt pavement maintenance vehicle which is cooperatively designed by a special vehicle factory in Hebei province and Hebei University Of Technology.Firstly,establish three-dimensional model of sub frame by using the software UG;secondly,establish the finite element model of the sub frame by finite element analysis software HyperWorks;then research the strength and stiffness of sub frame in fully loaded bend condition and fully loaded torsion condition,and the free modal analysis of sub frame;furthermore,according to the results of finite element analysis of sub frame,topology optimization and size optimization of sub frame is built,and it was verified that the new sub frame satisfying the design requirements after lighting the weight of 32.86%;finally,establish a virtual prototype model for cable-pulley system of feeding mechanism by ADAMS/Cable module,and completed the movement simulation to prove the feeding mechanism is well designed.