Applied Mechanics and Materials Vols. 416-417

Abstract: Based on the geocentric coordinate system, the object coordinate system as well as the theory of elliptic trajectory, it makes research and analysis of the ballistic-parameter-based trajectory generation method of the ballistic missile and, meanwhile, verifies the effectiveness and rationality of this method. It, under the assumed condition of elliptic trajectory, also researches the solution process of the ballistic parameters in the midcourse of the ballistic missile and, meanwhile, makes the simulation verification on the midcourse trajectory of the ballistic missile according to the radar sights variation relation in the object coordinate system during the motion process.

Abstract: To analyze the ballistic characteristics of sensing reconnaissance submunition in falling stage, the dynamic characteristics of sensing reconnaissance submunition is analyzed. Based on force bearing analysis, the particle ballistic model of the reconnaissance submunition in falling stage is built, and the ballistic data is simulated. The results are basically consistent to the result of live fire test, and it can be used to better simulate ballistic characteristics of the submunition. The results can be used to refer to conceptual design and determinate the fire data.

Abstract: The design of racing brake disc is one of the keys of the car braking system. The initial design of brake disc is based on the overall parameters and design requirements of South China University of Technology FSAE racing car. According to the mechanism of friction heat and friction heat distribution, a simple finite element model of temperature field model, boundary conditions and, using Algor to do a simulation of transient temperature field plate, the front and rear brake discs to determine the final size is analyzed.

Abstract: This paper combined with their actual project experience and industrial design point of view, based on the role of construction machinery design, working methods, evaluation methods, the authors put forward three ideas and opinions, and thus to provide some ideas and information for china's construction machinery enterprises in the development of industrial design.

Abstract: A virtual prototype of WZ30-25 hydraulic backhoe loader is established by using parameterization modeling and analysis function of ADAMS software. Moreover, various parameters of the prototype are simulative measured and verified, and the stability of the backhoe loader is checked in four typical operation modes

Abstract: the car milling machining center spindle box mainly by the spindle and the spindle on relevant parts, body, encoder related parts and some standard composition, the application of UG unique based on characteristics of the parts and components modeling function, the use of tensile, rotating, tendons, lofting and scanning, array characteristics and drilling easily design components of the three-dimensional entity.

Abstract: According to a series of characteristics produced from the side cutting in the rotary steering drilling system, PDC bit is improved from the profile shape, cutting structure, and gauge structure. Also, suggestions are proposed according to the drilling parameters of operation. The study result shows that the requirements of the rotary steering drilling system can be fulfilled by PDC bit design result and drilling parameter adjustment.

Abstract: through the analysis on the regulating bolt technology, the stamping blank instead of casting blank solution, introduces the calculation method of process, introduced the die structure and working process, and the problems in production, puts forward the solving measures.

Abstract: During the operation, the high speed train will be subject to random vibration load induced by the roughness of the rail and will cause the vibration. Traction motor is critical component of traction system for high-speed train. It is subject to not only static loads, but also random vibration load. This kind of random vibration load may easily lead to fatigue damage of the structure, which will finally cause adversely effect to the motor. Thus, in this paper, a 3-dimension model of the support system of traction motors in high-speed train applications is built, and the static and modal analyses are undertaken using finite element calculation software. The simulation results confirm that the support system is robust enough to meet the design requirements of strength and stiffness. Furthermore, it has a larger margin of safety in a typical case which meets the technical requirements for safe operation of the high-speed train.

Abstract: The material H62, thickness 4 mm, production batch to batch general blanking pieces quality analysis, to determine the cutting scheme, the design of progressive die. From the operation and locate mode, discharge and a way, the mold frame type and accuracy in the overall design analysis, and then to die, punch and other parts design and drawing die assembly drawing.