Applied Mechanics and Materials Vols. 556-562

Abstract: Stress analysis model of overhanging section of pipeline is created through submarine oil pipeline as analysis object, stress conditions of actual working conditions is considered, transition length is introduced to proceed finite element analysis of the pipeline, ANSYS software is used to calculate the stress and deformation of pipeline under different overhanging length in this paper. The curves of the maximum stress and maximum deformation with overhanging span are made, the variations of the maximum stress and maximum deformation are obtained according to the calculated data. This study provides data support for the failure identification of submarine oil pipeline, which has an important significance for the overhanging analysis and treatment of submarine pipeline.

Abstract: in this paper the temperature and the flow field of the radiator use CFDESIGN software test has carried on the simulation calculation of the radiator, the radiator heat transfer analysis of the whole calculation data and the details of the internal flow in a heat dissipation unit.And data obtained can be in normal acceptable error range, so this paper uses the algorithm is correct and available.This paper summarizes a series of radiator simulation steps, for the following radiator optimization design is proposed to write a set of scientific method.

Abstract: Triz is the abbreviation of “Theofia Resheneyva Isobretatelskehuh Zadach” in Russian and is invented to solve problems. It is short for “Theory of Inventive Problem Solving). Its study started from 1946 when Russian inventor Genrich S. Altshuller and his team members analyzed the approximately 250 invention patents. After the long-term analysis, induction and refinement, they formed TRIZ theory based on comprehensive principles and rules. Its main function is to do research on the scientific principles and rules existing in the process of invention and solving technology problems. Finally, they conclude one methodology and tools system to create systematic innovation and guidance for the mindset of designers. In recent years, the theory of TRIZ can has been widely used in mechanical parts.

Abstract: Electric vehicle (EV) maybe exist electricity leakage phenomenon during the side pole impact. so it not only to be meet the requirements of occupant protection, but also to be meet the requirements of electric safety. In this paper, according to the relevant standards, An electric vehicle side collision column test was done. It was pointed out that the EV design shortcomings and put forward the improvement direction by the test results analysis.

Abstract: Reducing noise and vibration is an increasingly important objective for designers and users of a wide range of mechanical system. Lubricant can contribute to reduction of overall noise and vibration generated by machines, both by reducing generation of acoustic energy in lubricated contacts and by modulating the transmission of vibration through the lubricant. This paper outlines various mechanisms by which the lubricant may affect the generation and transmission of acoustic vibration. Examples from the area of refrigeration compressor lubrication are presented, demonstrating that correct design and selection of lubricant can have a significant impact on noise and vibration.

Abstract: Convert Inhomogeneous media space into infinite homogeneous medium space with method of image charges, obtain the relations between Inhomogeneous media wire bound charge and free charge rely on electromagnetic theory and deduced analytical the model of parasitic capacitance per unit length of Inhomogeneous dielectric wire in insulation in automotive cable harness. Taking a car harness for example, analytical formulas and Ansys Q3D Extractor software were used to calculation and analysis harness unit length parameter matrix. Among them, the algorithm of Ansys Q3D Extractor software to calculate the parasitic of automotive cable harness is two-dimensional static finite element method, numerical methods belong.

Abstract: The general situation and the future development of ballast cleaner are summarized. The principleand structureof RM80 ballast cleaner is introduced. The three-dimensional model of the frame has been established. By finite element analysis software the structural changes of the frame has been analyzed. The weak links of the frame are identified and the improvement methods are put forward.

Abstract: By using LS-DYNA 3D software, the structure of forward annular shaped charge of torpedo tandem warhead is optimized in the simulation with uniform design method. During the simulation of annular shaped charge penetration into the plate underwater, the liner opening angle,liner thickness,charge height and charge angle are taken as factors, while the penetration depth is taken as index. The optimized structure parameters resulted form simulation can be used in the design of torpedo.

Abstract: In the design of machinery, Calculating and validating of bearings are exertive. Artificial Intelligence is the requirement of future design. This paper proposes a bearing expert system based on multiple reasoning, which highly improves the efficiency and quality of bearing design. The system and implementing method can be farther used in intelligent mechanical design.

Abstract: The necessity and superiority of using variable valve system on diesel is described detailed. The design of electro-hydraulic variable valve drive system is introduced based on DK4A diesel engine, then the mathematical simulation model of the electro-hydraulic variable valve drive system is undertook by Simulink in order to study the movement of the intake valve. The results show the design of variable valve system can achieve the variable valve timing continuous vary in different engine speed and respond quickly. Further, the simulation model of the diesel engine is built by GT-POWER, and then the accuracy of the model is verified according to the experiment data. Lastly the intake performance of the variable valve system in different out flowing phase is analyzed through the GT-POWER model. The results show that when the engine speed at 2000RPM, 2800RPM, 3600RPM, out flowing phase behind 60oCA, 45oCA, 35oCA after intake TDC respectively ,the amount of intake air decreases with the increase of the out flowing phase, the amount of intake air has been effectively controlled by variable valve system.