Advanced Materials Research Vols. 102-104

Abstract: In this paper , the author analyzed the influence factors of protection gas flow field, then established the model in a design of the optimized protection gas porous shunt, which is used in magnesium alloys furnace, Numerical simulation analysis optimizes the supplying system of protection gas. The shunt improves the uniformity and validity of the gas which is above the magnesium and reduces the gas consumption. The conclusion is that porous shunt usage will further promote the development and application of magnesium alloy in all fields.

Abstract: On the basis of the intersection of TRIZ and industrial design, the paper studies the core elements of TRIZ, including principles, methods, rules, and analyses their significance in guiding industrial design practices, also gives research on the application methods of different cases in industrial design. By investigating the commonness of TRIZ and industrial design in products creating activities, the paper summarizes creativity principles and trends forecasting methods in industrial design, so that to found the structure of products innovation knowledge base which grows from creative science and industrial design.

Abstract: When designing the air nailer, in order to achieve the purpose of rapid analysis of design results, use of VB and APDL tools, secondary development of ANSYS, established a parametric CAE analysis module, template-based CAE analysis module, and profession CAE analysis module. And this three module is integrated into the air nail industrial design platform. As a result, designers can quickly and easily on the air nailer for CAE analysis. Meanwhile, in order to achieve in the 3D design of the system of the air nailer’s handle for comfort evaluation, an evaluation method is proposed. Analysis and demonstrated the principle of the method. Established a comfort evaluation model. On this basis, comfortable evaluation software is developed. Evaluation results generated by the software can be used as a reliable basis for revising shapes of handles.

Abstract: On the basis of the actual detection of cylinders, this paper presents the necessity of replacement of stainless steel by plug made of 45# steel. Though FEM the simulated research on the forces exerted on the plug of high pressure gas cylinder in the process of rotation is done. Hence the feasibility analysis of plug to be made of 45# steel is further carried out.

Abstract: Digital industrial design system combines the digital technology and industrial design process，and integrates the sub-systems of digital modeling, digital assemble, digital evaluation, digital manufacture, and digital information exchange. In order to let the industrial design work process and the design data flowing fluently around such sub-systems, Product Data Management (PDM) system is introduced here as the basic integration platform of the sub-systems to let the design process flow and design data flow working well. The product digital industrial design platform basic functions and its system structure is analyzed, and a general model and function frame of product data management system oriented to digital industrial design is presented in this paper to solve its characteristic data composition, integrative method of application software and industrial design flow in the process of the digital industrial design. Results about the working process integrative model, control process model, product class definition model, and the logical structure of the digital industrial design platform with the PDM system are also established. An application results for certain product development show that such digital industry design system can make the helps for the design work efficiency and the follow-up engineering design accuracy.

Abstract: An approach of regions segmentation algorithm in triangle meshes based on threshold angle of the normal vectors is proposed. In this paper, a set of threshold angles is used to identify features and segment different surfaces, and then the non-feature regions based on least squares method are fitted and the corresponding fitting precision are obtained. Finally, the best threshold angle of each region is determined according to the comparison the above fitting precisions and each non-feature region points are obtained exactly. This method can improve the precision of feature extraction and region segmentation in some hybrid blend region. Examples are given to prove the effectiveness and the processing flexibility and stability of the proposed approach.

Abstract: The structures of mechanical parts are becoming more and more complex with the continuous expansion of the design industry. In this article, the profile points are reduced first according to the angle and distance threshold. Based on the minimal integral square error (ISE), Genetic algorithms (GAs) are then used with line segments and circular segments as the primitive form cell so that the profile feature points can be identified and extracted for the complex parts. It is shown that the genetic algorithms are successful for complex parts, although for a large amount of points, computation time is longer, and this will be considered in our further work.

Abstract: This paper introduces how to use the AutoCAD, Pro/E,VRML, Javascript, Dreamweaver and other computer-related software to complete the virtual ball valve assembly based on Computer Supported Cooperative Design. This paper also describes some ways to resolve contradictions and problems when related software worked together.

Abstract: The plant-fiber and starch have widly applications in the dishware materials, which can be taken place of the plastic packaging materials, the plant-fiber and starch dishware can eliminate the white pollution problem effectively for the environment. The mold for the plant-fiber and starch dishware is important for its manufacturing. In this paper, the finite element thermal analysis model of the plant-fiber and starch dishware mould is developed by using the Pro/E, then temperature profile of the mould was analyzed by using ANSYS based on the thermal analysis theory. At last, the structural parameters are optimized based on iterative method. The present analysis provid the theoretical basis for the applications of the mould for the plant-fiber and starch materials.

Abstract: In allusion to the rapid design for building door and window products, a rapid design method based on generalized modularization was put forward. According to the combination of generalized modules, the product configuration model was automatically generated on the basis of generalized modular planning, and then the rapid design for building door and window products was realized by the instantiation of product configuration model. With the method, product designs and associated knowledge can be reused and the design cycle can be effectively shortened. A designing system for building door and window products was developed and applied in some enterprises, with satisfactory results.