Research On Dynamic Simulation Of Bridge Girdererection Machine Based On ADAMS

High-speed rail has the characteristics of high speed and enclosed work type.It plays a fat part in transportation industry.And in the future,it will have a great development.Because of the totally enclosed characteristics of the high-speed railway,bridge are necessary when the railway pass through farmland and rivers.Therefore there will also be a lot of demand of machines that are used to build the bridges.The bridge span is becoming longer and the bridge floor is becoming wider.New bridge girder erection machine need to be developed to install the larger and heavier concrete beam.The purpose of this study is to find a more effective method for bridging machine design.In the traditional development process of large industry machine,the first job is to conduct a theoretical study to analysis the working condition and action process.And then find several dangerous status and do static calculation.After that a prototype manufacture will be made to carry out the physical experiments,and the false design found in the experiment will be modified.Generally speaking it offence has a long R & D cycle with large R & D cost.This paper study a new method to use Virtual Prototype technology to design bridge girder erection machine.After static analysis the model and its parameters are stored into a Model Neutral File and imported to ADAMS.And then contracts and load are applied to the model and dynamic simulation is carried out.Through the full circle dynamic simulation,comparatively accurate impact load and kinematics curve can be obtained.Unreasonable design can be optimized before building physical prototype.Then the purpose of reducing R & D expense will be reached.