Research And Development Of CAD/CAE-integrated Design System Of Turntable

In recent years, large luffing jib tower crane is widely available in superhigh-rise building and thermal power construction. But in the design methodology of luffing jib tower crane, most domestic enterprises still use of the traditional design method of CAD/CAE-separated, which has contributed to low efficiency and design quality. Under this situation, the main jobs of this thesis are as followed:(1) By analyzing and comparing the advantages and disadvantages between several traditional CAD/CAE-integrated methods, the common problems of them are being pointed out:do not achieve the consistency and coordination of CAD/CAE, do not have commonality, do not achieve the feature association of CAD/CAE, and forms an improved CAD/CAE-integrated method on the basis, which unify CAD/CAE model on the design cycle of products and achieve the consistency and coordination of CAD/CAE.(2) Putting forward the concept of generalized-feature model, which means an integrated, parameterized and general-purposed part which contains generalized feature such as CAD geometrical characteristic, CAE grid properties and load constraints. By the comprehensive application of Knowledge Fusion, Synchronous Modeling and so on, this article try to make it apply in the design of tumbler bearing, which causes it to be a CAD/CAE-bidirectional reusability general-purposed part, and in the subsequent design, designers can either use the CAD model for assembly or the finite element model for analysis, which improve the design efficiency.(3) Combining with the project experience of XGTL1600luffing jib tower crane which cooperates with Xuzhou heavy machinery Co, LTD, the structural features and design points of turntable of large luffing jib tower crane are being introduced in detail. According to the method of CAD/CAE-integrated, author developed the quickly design program of large luffing jib tower crane on the software platform of Simens NX8.0. It achieved the quickly set-up of CAD model and the quickly-validation of CAE, consequently shorten product development cycle and improve the market competitiveness of product.