Papers by Keyword: Design Analysis

Abstract: As for jacket dragging load-out foundations, the concrete skidway blocks were prone to be sheared and wrecked, especially the outer blocks, for they generally swung with the tugboat. This paper takes dragging load-out of LS36-1 jacket on 3# skidway for example, and proposes a design analysis for dock apron skidway blocks. The design philosophy is replacing original concrete blocks with steel blocks, and the new steel blocks not only have good shear strength and compressive strength, but they are also easier to connect and fix with skidway. In addition, some essential strengthen measures are adopted, reformed 3# skidway blocks are ready for much heavier modules and jackets dragging load-out works.

Abstract: This work's context is an industrial project aiming the accurate modeling of the injection molding process.The main purpose of this work was to design a mathematical model and computer programs for design analysis in composite core-pulling mechanism. The injection mould with slanted guide pillar for two-step core-pulling from the side of the product effects significantly the quality and efficiency of plastic part. The study is a one-dimensional analysis of secondaryejector mechanism, based on a forward marching technique of solution for the simple structure and high safety and reliability. 3D numerical simulation of the different stages is considered: during processing, anisotropy of the stress state build up affects its mechanical or dimensional properties once the part is ejected. Using the simulation analysis of mechanical system based on Pro/E, the mechanism can solve the problem that plastic parts are difficult to side core pulling in different directions by the use of bevel pillar.

Abstract: The main purpose of this work was to develop a mathematical model and computer programs for design analysis in composite core-pulling mechanism. The injection mould with slanted guide pillar for two-step core-pulling from the side of the product effects significantly the quality and efficiency of plastic part. The study is a one-dimensional analysis of secondaryejector mechanism, based on a forward marching technique of solution for the simple structure and high safety and reliability. Using the simulation analysis of mechanical system based on Pro/E, the mechanism can solve the problem that plastic parts are difficult to side core pulling in different directions by the use of bevel pillar.

Abstract: Ejection style of mold effects significantly the quality and efficiency of mold production. A new leverstyle secondary ejection mechanism is illustrated. The mechanism can solve the problem that plastic parts are difficult to eject fully after the first ejection. The mechanism has simple structure and high safety and reliability, satisfies the requirement of full automation and is suit to large quantity of mold production. Commercial CAD/CAM systems provide semi-automatic tools to assist the designer in the dimensioning process. Using the method, good results have been obtained for several basic geometric models.

Abstract: Resonance transformer design is a large-scale and complicated management process. With the improvement of science and technology in China, and the application of modern professional, factory, mechanical and information means provides sufficient science and technology basis for the transformer design level. Grounded in the environment of electronic linear accelerator, this thesis could change the current situation of imperfect transformer management. This thesis elaborates the background and significance of electronic linear accelerator in resonance transformer design, proposes the purpose and main content mode of resonance transformer design, gives a detailed introduction of the frame and functions of all modules of PSCAD simulation experiment, and finally makes relevant discussions of the application of resonance transformer.

Abstract: This document explains and demonstrates how to analyze the stress of the axle, modify the rear wing and SolidWorks dynamic simulation analysis for the F1 Race Car. It offers a variety of results visualization tools that allow investigators to gain valuable insight into the design of the F1 race car, and makes it easy to share analysis results effectively with everyone involved in the F1 race car product development process.

Abstract: The design analysis of vertical lathe auxiliary equipment for large pressure vessel processing has been done in this paper. The finite element method has been used to find the main factors which influence the processing precision. The results show that the main factor influencing maximum displacement of overall structure is not the vertical lathe cutting force but the weight of the large pressure vessel. So it is unreasonable to control the processing precision by the whole structure maximum displacement. The horizontal displacement is the main factor in controlling processing precision. The pressure vessel work piece sits on the top plate of the vertical lathe auxiliary equipment. So the displacement of the top plate of the vertical lathe auxiliary equipment is the main factor influencing processing precision. This kind of design thinking has been successfully applied in three type large pressure vessels. It has certain reference value in similar design.

Abstract: This paper presents one mobile phone product mechanical architecture design. This phone was already launched to market and get very good feedback and volume. For one mobile phone mechanical architecture design, it must be consisted of some processes such as phone specification definition, key components selection, architecture concepts creation then concept selection and concepts verification etc. This document explains and demonstrators how to get this phone’s final optimized and mature architecture according to product design and development process.

Abstract: The design of pressurized components at elevated temperature is limited by available mechanical properties that often do not span appropriate range of stress, time, strain and temperature. To improve the design process, a new approach based on short-time stress relaxation test (SRT) is introduced in steel tensile creep analysis. The experiments are implemented using SRT and tested for creep properties of 12Cr1MoVG steel at 560 °C. The results of creep curves agree well with the traditional constant load creep test data. The possibility to apply SRT approach is shown promising in the design of the pressurized component at elevated temperature.

Abstract: A key problem in engineering application of “design by analysis” approach is how to decompose a total stress field obtained by the finite element analysis into different stress categories defined in the ASME Code III and VIII-2. In this paper, we suggested an approach to separate primary stress with the principle of superposition, in which the structure does not need to be cut into primary structure but analyzed as a whole only with decomposed load. Taking pressurized cylindrical vessel with plate head as example, the approach is demonstrated and discussed in detail. The allowable load determined by the supposed method is a little conservative than that determined by limited load analysis.