Applied Mechanics and Materials Vols. 687-691

Abstract: because of the synchronism belts driving has the advantages of vibration absorption, noise reduction, constant transmission ratio, so it is widely used in automotive engine timing driving system, The stiffness and damping coefficients of the synchronous belt is the main factor affecting the synchronous belt transmission in the process of vibration and noise. In this paper, the model W automotive synchronous belt is simplified as a spring damper system, to solve the stiffness coefficient and damping coefficient of synchronous belt, design of a device for measuring the synchronous belt stiffness coefficient and damping coefficient, measured the belt stiffness coefficient and damping coefficient in the conditions of different tension, and the accuracy of the solution method for synchronous belt stiffness coefficient and damping coefficient was verified as well.

Abstract: The MP800’s main frame be completed of spindle assembly during the manufacturing process, Processing to the spindle for a new benchmark for the rest of the dimension chain. The frame size is very large, heavier, material for iron, brittleness, uneven heating not easy to bear the impact and tensile force; flange hole on the frame, the size of parts relatively small, small weight, materials for low alloy steel; hole and shaft with high precision, large amount of interference, Relying on the cooperation between the surface to overcome the friction torque and axial force during working, belong to a large part of large interference not detachable fixed connection; the spindle assembly using liquid nitrogen cold fitting technology

Abstract: There is no more in-depth research in the amount of alternative between natural gas and tradition fuel. The paper consider two factors about gas calorific value and vehicle level and put forward the fuel calorific value correction coefficient and vehicle energy efficiency correction coefficient. On this basis, the coefficient table and calculation method was established. The paper proved that because of the influence of the factors, equivalent ratio in the range of 1.13~1.67. The method can indicate the gas replacement more scientific and real, because of consider of the actual situation of application of the enterprise.The research can guide the selection of natural gas vehicle reasonable and scientific.

Abstract: An online energy assessment system for pump unit is designed in this paper, which is mainly utilized in both energy consumption measurement and energy assessment of pump units.^[1,2]The system could offer reasonable advisory opinion about pump and motor energy-saving. If a certain power plant is reformed on basis of the recommendation of this system, the energy of 491000 kWh could be saved while 393600 yuan will be economized, which has excellent energy-saving effect.This system is well worth spreading to national wide to bring enormous economic and energy benefit every year.

Abstract: In order to insure the consistent wave loads in hydrodynamic calculation and structural analysis, the treatment of nonlinear roll damping in roll motion, wave torsional moment and structural analysis are studied. The nonlinear roll damping moment is applied to the structural model by means of the equivalent nodal forces. Taking a supply ship and a FPSO as example, the calculation results show that the problem of torsional moment distribution divergent on the bow and the unbalanced structural model is improved greatly, which would be helpful to provide the reliable basis to design the structures.

Abstract: The study calculated and analyzed the distribution of thermal stress on exhaust manifold of one 8V diesel exhaust system. To solve the problem of high local thermal stress on the exhaust manifold, the effect of using hollow flange structure, reducing cylinder head stiffness and slotting has been studied.

Abstract: An explicit finite element method which is combined with the Arbitrary Lagrangian-Eulerian (ALE) algorithm is applied to forecast slamming loads during the structure entries into the water. By adjusting the contact parameter, the result of slamming force is improved and this result is compared with the corresponding experimental values to verify the numerical prediction method of slamming loads. By simulating the wedge into the water at a constant speed and evenly variable speed, the effect of the impact velocity on local slamming pressure and global slamming force is studied.

Abstract: Electromagnetic tracking sensor is based on the car with an alternating current through a wire, according to the sensor data collected after the completion of processing of the microprocessor of the car steering rudder adjustment, and by detecting the speed and steering wheels the size of machine-printed on the rudder speed adjustment control. In today's age of advanced technology more and more of our friends that we accelerate the pace of life has accelerated the speed of travel, while the faster and more accidents on the track the car is either the superiority of unmanned vehicles can think and know.

Abstract: This topic develop the matrix composite pipes which has the ability of corrosion prevention and antiseep, also has the high strength of extension and stability, by using huge advantage of the corrosion prevention and antiseep performance of resin matrix composite, the high strength of extension of carbon steel, and also, the high stiffness of cement matrix composites. We design and optimize the structure of matrix composite pipes by study the relationship between deformation coordination based on the viscoelastic constitutive model of resin matrix composite, the homogeneity elastic constitutive model of the cement matrix composites. We obtain a basic method of design the matrix composite pipes from studying from theoretical analysis and numerical simulation.

Abstract: In this paper, the synchronization of a neural network with community structure is investigated. Cluster projective generalizes previously existing synchronization schemes. The cluster projective synchronization is more general that includes projective synchronization and cluster synchronization, as its special cases. The cluster projective synchronization of these networks is discussed via some pinning control strategy. Several sufficient conditions for the network to achieve cluster projective synchronization are derived based on Lyapunov stability theory. Numerical simulations are used to demonstrate the effectiveness and feasibility of the proposed scheme.