The Dynamic Simulation Research On Double Jib System Based On Virtual Prototype Technology

Since 1950s of 20th Century, It has been the rapid development of computer technology for engineering design, Analysis and optimization technology has brought sweeping changes. Computer hardware, computing technology, applied mathematics, mechanics, computer graphics, software technology of combining integration promoting design concepts, theories, methods, techniques and the tools of progress, design theory and application of new technologies to unprecedented prosperity. Meanwhile with the development of ports, the requirement of port machinery is higher and higher. So design calculation method of loading and unloading machine need to be renewed, substantiated and consummated constantly to make port machinery more functional, economic, reliable and safe. For a long time, the design method of loading and unloading machine of port mostly adopts the static design and has no valid method of dynamic emulation. Adopting technique of virtual prototype in study of port machinery can realize emulation that the running state of each mechanism under various working conditions which varies according to load and the process which varies according to time. Results from the emulation are used to estimate and judge different data of actual movement. It also has some reference value for the dynamic analysis and calculation of port machinery .What have mentioned above provide the foundation for emulation design study of crane and provide technique support for the creative design and optimization of crane. It plays an important part in quickening the development cycle and reducing the cost.This paper bases on the technique of virtual prototype and utilizes software platform of UG, ADAMS and ANSYS to establish three-dimensional digitized virtual prototype of double link jib system of portal crane and systematically do its analysis of dynamics emulation of multi-body system. It realizes that emulation of double link jib system under different working conditions. Related data that is got in the emulation analysis offers effective methods on dynamic design of double link jib system of portal crane. Main contents of the paper are as follows.It establishes related dynamics models and ascertains dynamics load under different working conditions according to dynamics theories. Adopt three-dimensional solid modeling software of UG to establish three-dimensional models of double link jib system and lead them to software of ADAMS. Then, add loads and force on every component and do theirs analysis of dynamics emulation of mufti-body system; On the use of finite element software ANSYS, jib, beam of Elephant nose , stick to establish modal neutral document, ADAMS more Sophie into a joint simulation. The results of the analysis, in different conditions, a private tutor coupling system dynamics simulation of a preliminary study ADAMS load paper will be produced to ANSYS software for finite element analysis component.In a word, virtual prototype study of double link jib system of portal crane is a trial that apply advanced design analysis, emulation techniques in design of portal crane and offers efficient tool and method to design portal crane that is economic, credible stable and high performance.