Computer-Aided Design, Manufacturing, Modeling and Simulation IV

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Authors: Xiang Ying Dang
Abstract: For welding image after pretreatment, First, GAP predictor templates predict error image,using the 2D Maximum Between· cluster Variance (OTSU) method combined with improved genetic algorithm to calculate the threshold ,Then classified errors image edge, weld image edge was extract. Experiments show that the method to detect the weld image edge not only decrease the time complexity, but also get the clearer edges, more details, and better visual image.
Authors: Tao Chen, Ya Ping Hu, Jing Peng Zhu
Abstract: Flying shear is the equipment that steel enterprises make shearing process on metal preform body for further processing. Crank flying shear has the advantages of high efficiency and good shearing quality, which makes it widely applied. The paper analyzes and studies crank rocking flying shear evolved from IHI rocking shear. And the paper makes kinetic analysis on crank rocking flying shear, applies Solid works software to make three-dimensional modeling, assembly and animation of working process on crank rocking flying shear, and makes optimized analysis and design on spare parts of flying shear combined with kinetic analysis results.
Authors: Jun Wang
Abstract: This paper uses FLUENT as the researching tools of 3D numerical simulation of deoiling hydrocyclones, analysis on the geometric structure of deoiling Hydrocyclone, summed up a set of grid partition method based on the basic theory and turbulence simulation of CFD theory, to determine a reasonable mathematical model, boundary conditions, convection diffusion the discrete format and pressure velocity coupling algorithm. This paper establishes the mathematical model, calculation method and the optimization principle for the separation mechanism; it also provides basic theory and experience for studying on deoiling hydrocyclone such as separation mechanism, flow and turbulent scalar field characteristics and structure optimization design.
Authors: Ping Xu, Jian Gang Yi
Abstract: Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.
Authors: Qing Kai Jin, Jun Yi Li, Yan Zhang
Abstract: For the redundant codes caused by software reuse and rapid development in object-oriented program, the paper proposes a cutting model and designs a cutting scheme based on this model. Firstly, a cutting model is established. Then, static analysis is made for object-oriented codes and the cutting information base of objects to be clipped is established. Lastly, the cutting information base and cutting model is matched to cut the program. A test on a practical java project indicates that the cutting scheme can make the volume of the project reduce by about 21%.
Authors: Jin Da Zhu, Li Bing Liu, Ze Qing Yang
Abstract: Dynamic effects of machining processing could not be ignored with the increasing speed of CNC machine tools, the analysis of kinematic behavior related to the kinematics, dynamics and control system etc, and there were a lot of coupling relationship of these systems. A simulation of single discipline could not reflect the overall performance with having to the simplification of the other discipline. It proposed a collaborative simulation modeling method based HLA for CNC machine tools. The development process of HLA-based simulation mainly involved system design, high level modeling, domain modeling, transformation of domain models, federal integration. Finally, this paper described an open architecture of collaborative simulation modeling with RTI, and developed the dynamics and control system models using Matlab and Adams software respectively. It provided theoretical support to solve coupling and interaction of the multi domain models of machine tools products in the design and development.
Authors: Yun Ling Liu
Abstract: According to the design of composite mould manufacturing technology, the paper discusses the present situation and development trends of domestic and international research, focuses on the analysis of forming processes for composite materials, composite molding technology. At the same time, this paper presents a design method of composite technology of INVAR steel mold structure based on multi point forming of RTM technology, this method can well solve the design and manufacturing of composite mold problems.
Authors: Li Ying Wu
Abstract: The paper analyze development process of the advanced resin matrix composite materials forming technology, that is low pressure molding, pultrusion process, molding, filament winding forming process, placement molding process, molding process of RTM, and analyze the key technology in the development process, to study the evolvement of advanced composite material molding process, so as to explore the future development direction of forming resin based composite material technology.
Authors: Yan Xu
Abstract: This paper introduces in detail the characteristics and applications of composite beams of steel and concrete, and discusses the current research situation of steel and concrete composite beams and put forward to solve the problem. Through the paper systematically analyze and compute the stress structure of composite beams to determine the technical indexes in detail. The results show that, the structure of composite beams of steel and concrete stress is reasonable; the economy is good, need to vigorously promote.

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