Advanced Materials Research Vols. 479-481

Abstract: Abstract. Aiming at the need of multi-objective optimization design of the common beam in engineering, this paper optimized the beams’ carrying capacity and anti-vibration ability based on optimization design platform of Isight, which integrated ProE and Ansys software. Through automatic iteration of the beam’s 3D modal data and simulation results, one ideal optimization solution can be obtained by using NLPQL algorithm. Compared with initial design, optimization Results’ performance parameter improved markedly. This standard method and steps can be promoted to engineers, which involve beam’s finite element analysis and design optimization.

Abstract: The dynamic characteristics of shaft system in water turbine generating set and hydropower house structure is investigated by using the APDL procedure in ANSYS. The coupled vibration model which contains unit piers, hydropower house structure and water turbine generating set is developed. In this model, the nonlinear dynamic characteristics of the supporting structure (radial bearing) in water turbine generating set and the flexibility of unit piers and hydropower house structure are all considered. Through the revolving periodic transient results of the former four generating sets, the dynamic response of the shaft system in water turbine generating set and the dynamic characteristics of the hydropower house structure are analyzed. The interaction between the hydropower house structure and the water turbine generating set is discussed, which provide useful references to anti-vibration design of the hydropower house structure.

Abstract: By experimental study, a design for pressurization system in a multiple injection system with upper injection is discussed and the velocity distribution in a shaft is educed by the approach method. This velocity has a relation with volume flux from pressurization fan, section area of pressurization shaft and height of shaft. In factual situation, there is an important assistant meaning on researching the design of pressurization system in high-rise buildings.

Abstract: The three-dimensional solid model and finite element model of an inertial navigation platform, is established by using ANSYS software. A modal analysis has been carried out. The former 6 ordered nature frequency and modal shape have been obtained and kept away from the frequency of Laser Gyro. The finite element model of the system vibration is established and is analysed for harmonic response. The calculation data show that vibration amplitude is very small and has no influence for the Laser Gyro working. The theory modal data is the same as the modal test results, so it manifests the accuracy and effectiveness in the modeling and analysis.

Abstract: Work Scope is key performance to the Demolition robot and is also a major factor consider to the users. CATIA and ADAMS were employed to design the 3D model and do the kinematics simulation to complete the design of work element of Demolition Robot. Parameters of assembly and interference detection of the 3D model was checked in the CATIA before taking the kinematics simulation experiment. The simulated result indicated that maximum radius, maximum depth and maximum height of Demolition Robot could be obtained, variance of forces at key articulated points and scope of work envelope diagram were presented, which provides a new method to analyze and design Demolition Robot.

Abstract: In order to confirm the structure strength reliability of the plunger pump fluid end, the 3-D parametric finite element model is built according to its structure characteristic, the finite element analysis is carried through the finite element analysis software, and the reliability analysis is carried by ANSYS/PDS. The analysis result shows that 500 times sampling simulation suffices the need of precision. The result of sensitivity analysis is shown that the main influencing factor is material yield limit of plunger pump for the reliability, the second is the internal pressure of fluid end, and the elastic modulus and Poisson ratio have less effect for the reliability. The reliability of fluid end is 95.6% when the material yield limit of plunger pump is normal distribution. The reliability of fluid end is up to 100% when the material yield limit is constant, so the material yield limit is ensured not change when the fluid end is designed and manufactured.

Abstract: To solve the problems such as too much trial-and-error, limited material being involved in the graphs and calculation results being obviously influenced by artificial factors and errors of the graphs in the design of external pressure vessel according to current standard ASME Ⅷ-1, GB150 and EN13445, the mathematic expression of the graphic charts is examined, and a set of analytical equations and algorithms for the linear and nonlinear instability of external pressure vessel are established. The equation was applied to calculate the ultimate buckling pressure of cylinder and spherical shells. The algorithm here provided can not only avoid the shortages of current graphic analysis methods, but also be convenient for technicians to calculate, which could enrich and consummate the graphic charts in the current standards and be useful to the design of external pressure vessels to be made of new materials.

Abstract: The system structure and the system frame of cooperative design are established in this paper. The develop strategies combined prototype method and object-oriented are pointed out. By integrated existing software products and Secondary Development, the cooperative design platform are established.

Abstract: Humanistic design is a continuous progress design concept with the needs of the society, the purpose of humanistic design is to supply products continuously to meet people's increasing material and cultural needs. This paper describes the design concept of the humanistic content, the germination of the humanistic design in men's fashion industry from a historical point of view of China, makes an analysis of development opportunities of the humanistic design from macroeconomic and the consumer market, and specifically points out that the trend of men's design innovation of China, sums up the necessity of persisting to the humanistic design thinking to guide for men's product design.

Abstract: Firstly, analysis product’s customer demand correlation, function correlation, geometric correlation, structure the corresponding correlation matrix, distribute the respective weighting factor, and then establish an integrated correlation matrix. Application of fuzzy clustering, the establishment of cluster map, the program has been divided into different modules. Based on information entropy theory, select product’s design and manufacturing complexity, cost, maintenance as the optimization objective, establish mathematical evaluation model of module division. Evaluating a number of options get from the fuzzy clustering method, which gain the most reasonable module division program. Finally, taking the seat frame of the Remote Control Weapon Station(RCWS) for example, verify the validity and reasonableness of the evaluation method.