Advanced Materials Research Vols. 945-949

Abstract: The static strength and dynamic characteristic of connecting rod used in model 10/7 L type air compressor with double actions was studied, the 3D model of connecting rod was established by SolidWorks software, and the finite element stress analysis and modal analysis were done by ANSYS; the analysis results can be used as the base to improve the design of the connecting rod.

Abstract: Using LISP language embed in AutoCAD, the parametric drawing design for expanded view of the transformer elevated seat is discussed. The mathematical model is constructed and gotten solution with parameters comes from dialog built by OpenDCL. Weld is put to the position not easy to see. It is to increase the efficiency of design the expanded view of the transformer elevated seat. This method is worth widely spreading.

Abstract: In order to enhance the design level of the valve, brought in the modular design on the development of the valve, realized optimized design of the valve structure based on solidworks.

Abstract: Stent implantation is a non-surgical method to treat the coronary artery disease that can support vessel walls and reduce the risk of heart attack. In this paper, undertaking the 316L stainless steel as a medical stent material, a certain coronary stent is utilized to study its mechanical characteristics by the finite element analysis as it is deployed and implanted in a vessel containing a plaque, and try to reach to a model close to a real condition of stent implantation. The result shows that the width size of stent rods is greater than its thickness size in the capability of resisting deformation of configuration, and then displacement changes of the coronary stent on the axial direction should be keeping a close eye in their expansion process.

Abstract: It has prove to be the essential means to improve the efficiency, shorten the cycle and reduce costs of development by finite element modeling and simulation on side detector.Finite element modeling was studied for the design of profile detector on the basis of theoretical analysis.Verify the validity and reliability of the model combining with the test results,thereby providing the basis for further optimization of product design.

Abstract: The top-down mode has been widely used in the cooperation design of complex products. It has great advantages over traditional down-up mode for such a complex system as target area for the ICF facility. By taking target area of National Ignition Facility (NIF) for example, this paper will present a process of three-dimensional cooperation design supported by a design platform. The parametric design software Creo (upgraded Pro/E) and PDM software Windchill PDMlink are seamlessly connected in the platform using the floating license. The whole design process of target area was based on top-down mode and driven by the skeleton models. The sub-assembly includes target chamber, beam transport system, and supporting system. The design has been concurrently accomplished by the system engineer and the sub-assembly engineers on the design platform. It has validated the feasibility of the cooperation design based on the top-down mode. It can technically support the realization of the cooperation design for NIF scaled high-power laser driver.

Abstract: With the rapid development of computer aided technology, the application of model based definition (MBD) in the research and development (R&D) processes of aerospace products become more and more widespread. The quality of MBD refers to its ability to meet the requirements of the downstream processes like subsequent design, manufacture, simulation, and inspection etc. Based on MBD’s quality characteristics, such as modeling and simulation quality, design process quality, geometry and topology quality, data quality and data exchange quality, this paper constructs a quality model for aerospace digital products and proposes both qualitative and quantitative quality evaluation methods for MBD of aerospace products.

Abstract: This paper aimed at investigating the injury risk and the kinematics of pedestrians in collisions with buses. A mathematical model of a production bus was developed. A parameter study of the bus-pedestrian collision was carried out by using the bus MB (multi-body model) and a validated pedestrian MB model in terms of pedestrian postures, bus front design parameters, and different impact conditions. The results indicated that the initial state of pedestrians has significant influences on their kinematic responses. The impact speed and front stiffness has remarkable effects on pedestrian injury severities. Besides, restricted bus travel speed,lowered stiffness of bus front structure and reduced ground clearance could reduce the pedestrian injury risks.

Abstract: In order to reduce the injury risk of driver’s lower extremities, a driver knee airbag was developed and optimized by using mathematical models. The influence of eight design parameters of belt and knee airbag on the injuries of driver’s lower extremities was analyzed. The result shows that the key influence factors are sensitive to the injuries of lower extremity, including initiation timing of knee airbag, the strap length of knee airbag and area coefficient for the exhaust openings of knee airbag. Based on multi-objective genetic algorithms, an optimization of the knee airbag was conducted in terms of the three factors. After optimization, the injury risk of driver’s lower extremities is greatly reduced.