Font Size: a A A

Research On Wind-induced Dynamic Response Of Large-span Space Based On Virtual Prototype Technology

Posted on:2009-09-17Degree:MasterType:Thesis
Country:ChinaCandidate:B Z LiFull Text:PDF
GTID:2178360245955061Subject:Mechanical and electrical engineering
Abstract/Summary:PDF Full Text Request
Since 1950's, the great development of computer have already brought about all-round transforming in engineering design , analysis and optimizing technology. The computer hardware, calculating technology, applied mathematics, mechanics, computer graphics, software's combine and fuse, which are driving the progress of the designing idea, theory, method, technology so far as the implement, the studys of new technology designing theory and apply are flourishing as never before. Virtual Prototype Technology provide the Dynamic Design of Machanical structure with powerful means.The construction method of bridge superstructure has already obtained the rapid development with the prestressed concrete widespread application in the later 1970's and had a significant transformation. In armoured concrete bridge times, the main construction method is pouring. Since the bridge type and the span increasing, the component producing prefabrication-rization and the progress of structure design procedure and machinery equipment, which result in the progress and developement of bridge construction method and various construction formed. The construction method of bridge can be marked basically installation of prefabricated and pouring two major kinds In addition to some peculiar construction method, The Basket is the cantilever pours construction equipment in common use at present.Large-span steel structure like Basket, which working highly above the ground, quality is small, flexibility is large, the damp is small, self-vibration frequency is low, wind sometimes is the major consider design load, Steel Structure Loading Norm our country currently in effect only made a few simple qualitative provisions for wind-induced response of large-span steel structure, did not give concrete calculation out formula. Because the shape of large-span space structure is complicated, the confficient of the body surface and the modal number participate in vibration analysis are difficult to determined. The engineer sometimes according to experience determine the confficient value in this type of physical design, which have very arbitrarily nature. Therefore, that large-span space structure wind-induced vibration analysis is one of the hot spot studying at present, two methods mainly used in vibration analysis of large-span space structure at present: Frequency regional method and time regional method. This Paper based on Virtual Prototype Technology , make use of UG , ADAMS , ANSYS software platform to build three-dimensional digitization virtual prototype model of Basket system, and analysis the wind-induced response of the large-span steel structure.Main thesis content is included: have studied wind-loading characteristic property and formulation; have used 3-D entity model software UG to build the three-dimensional entity model of Basket system, and inport the three-dimensional entity model of Basket system to ADAMS software; have used Finite Element method software ANSYS to modal analysis of Loading -platform, Template-system and Centering, build the modal neuter document; inport the modal neuter document to ADAMS to generate multi-flexible bodies, create constraints and incentive for vibration analysis.The research and conclusion of the book can provide engineering design and the study of wind-induced response of large-span steel structure with useful reference.
Keywords/Search Tags:Technique of virtual prototype, Multi-flexible body, Bridge, Wind-induced vibration, Large-span space
PDF Full Text Request
Related items