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The prediction of hydrodynamic characteristics and motion responses is investigated numerically with CFD software FLUENT and self-developed program. Variations of resistance, lift and moment under the condition of the air effect is considered or not at different Froude numbers are numerically simulated. Predicted results show that the lift and moment change obviously when the air effect is included...
As one of the optimum design of enclosure structures for deep excavation, the double-row pile has advantages of large lateral stiffness, no support and small footprint. But more studies should be done on how it works practically. the paper summarizes the currently used model, analyses and compares of their characteristics. Using a typical example, verifies the advantages and disadvantages of flexible...
For the better acquiring knowledge needed by expert from cyberspace in Internet and stimulating inspiration for creation, a method of obtaining group knowledge of generalized expert for product innovation design is proposed in this paper. First, analysis of knowledge sample provided by universal expert is performed, and sample feature is extracted. Then, in response to the features of product innovation...
By analysis of one 385 diesel engine strengthening sheet part, its' expansion size is decided through calculation and related software. Cavity and punch's working parts of bending and forming die are designed using CAE technology, their working parts simulation actions are produced by Mastercam software. While machined, if milling cutters and relative parameters are selected reasonably, more ideal...
Based on the idea of mechanical optimization design, dies meeting the requirements were built by the analysis on the stamping part front-covering-shell. The DYNAFORM software is used for CAE analysis. Because CAE is introduced, stamping is developed from the original analysis on strain and stress to simulation and analysis of process by finite element method and so on. Finally, press process optimization...
Uses the small shake table model experiment to confirm the mechanism of the liquefy sandy soil of has not reinforced and be marker reinforcement by the gravel pile, the key contrastive.
Chinese government has been bothered by the problems for many years that the investments of the government project are always out of control. The examining & approving system is the key of the control process for current government project. In order to avoid making false decision and overcoming the disadvantages of current systems, In the basis of the current problems existed in government-invested...
Some factors affect precursor capability, for example: raw material CoCl2 solution impurity, feeding methods of reactants, solutions' pH value of deposition reaction, washing conditions, etc. Cobalt chloride is chosen as raw material, sodium carbonate as precipitator, cobalt ion concentration 65~70g/L, Cobalt chloride/sodium carbonate(mol ratio)among 0.63~0.72, the way adding solution is chosen that...
By analysis of one 390 diesel engine strengthening sheet part, its' expansion size is decided through calculation and related software. Cavity and punch's working parts of bending and forming die are designed using CAE technology, their working parts simulation actions are produced by Mastercam software. While machined, if milling cutters and relative parameters are selected reasonably, more ideal...
For obtaining reasonable auto dashboard cover injection plastic workpiece, model thickness, taper situation are checked by Pro/E MOLDESIGN, mold deformation parting surface, core and cavity, gating system, cooling system are designed and simulated, open mold and interference simulation are also checked, mold flowing is analysised using Plastic Advisor software. Through many times correction, suitable...
Based on the idea of mechanical optimization design, a workpiece of 390 diesel engine punching dies meeting the requirements were built by the analysis on the stamping part behind-covering-shell. The DYNAFORM software is used for CAE analysis. Because CAE is introduced, stamping is developed from the original analysis on strain and stress to simulation and analysis of process by finite element method...
Aiming at the numerical integration of oscillating functions, a method based on the neural network with trigonometric functions is proposed in this paper. The author uses the trigonometric function acting as the activation function of neural network, and uses the output of neural network approximate to the oscillating function. The example has shown that the method proposed is effective and has high...
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