Advanced Materials Research Vols. 308-310

Abstract: Aimed at the need of data processing and analysis in the performance test of hydraulic torque converter, we put forward a way of test data analysis using neural-fuzzy system. It can reduce manual participation, improve the data processing ability, accelerate computing velocity and realize data handling automation. We can judge product’s performance by this method. The use in experiment data indicates that it can express the relation of original data nicely. The identifying accuracy of data is good. It can satisfy the request of test data analysis and the analytical conclusion is accurate too.

Abstract: Beginning from 2001 in which both Taiwan and China joined World Trade Organization (WTO), a large number of Taiwanese manufacturers have moved their plants across Taiwan Straight to China in search for cheaper labor force regardless of the political tensions between two countries. With the gradual easing of cross-strait political tension after the inauguration of pro-China president of Taiwan, the Taiwan Government starting from 2009 has been promoting the "Economic Cooperation Framework Agreement" (ECFA) through which the government claims the cross-strait economic and trade relations could be further enhanced and Taiwan could avoid being “marginalized” from the regional economic system. Additionally, as the two countries gradually lift restrictions on the investment and remove tariff barriers the cross-strait economic is bound to be more closely and the trade exchanges are set to skyrocket. However, since the bilateral trade or investment is generally through the U.S. dollar the fluctuation in currency exchange rate may serve as one of the important factors when the business makes the investment decision. Therefore, this paper applies Grey prediction method of Grey theory to the forecast of the exchange rate between NT dollar and RMB on which Taiwan enterprises could depend when formulating their investment strategies of investing more in China or Taiwan.

Abstract: In the paper a new kind of rolling-sliding blend bearing has been studied. In order to comparing the new bearings and rolling bearings in the carrying capacity and service life, the stresses on the inner ring, the outer ring and the roller of rolling bearing and rolling-sliding blend bearing are analyzed by establishing the finite element model and solving it with finite element analysis software. The results show that the width of the stress concentration area on the outer ring and the roller and the inner ring of rolling-sliding blend bearing is 25 per cent narrower than that of rolling bearing and the depth of the largest stress on the outer ring and the roller and the inner ring of rolling-sliding blend bearing is 25 per cent shallower than that of rolling bearing and the largest stress on the middle and the end of the outer ring and the roller and the inner ring of rolling-sliding blend bearing is much smaller than that of rolling bearing. In the same case rolling-sliding blend bearings have greater carrying capacity and longer service life than rolling bearings.

Abstract: A research is made on the different influence on frame structure stiffness between straight board stairs and fold board stairs. The research is divided into two circumstances: independent framework unit and the overall framework. in each circumstance, there are four cases: frame without stairs, frame with straight stairs, frame with fold board stairs whose slow bedplate is located in the floor place, frame with fold board stairs whose slow bedplate is located in the middle platform, the horizontal floor displacement of four kind of frames in transverse and longitudinal direction under the same force. By comparing the four displacements, the influence of three different forms of stairs on frame structure stiffness can be got; the result shows that fold board stairs whose slow bedplate is located in the middle platform are better than straight stairs in seismic performance.

Abstract: In this paper, the ride comfort of the ATV( with two wheels in the front and one wheel in the rear) is the research object. The software of hypermesh and asams establish rigid-flexible coupling dynamics model and simulate the ride comfort. After the comparative analysis between the vehicle ride comfort and four-wheel all -terrain motorbike, its ride comfort has been optimized.

Abstract: Based on diesel engine, the digital collaborative platform was designed. The key technology of supporting the platform was introduced. In addition, the principle of digital collaborative design was designed. For a diesel engine, the flow of design was introduced. In every step, the designed contents were determined. Compared the traditional design, the new design will have the shorter period and the better design quality.

Abstract: Computational methods of some pressure-drop models for a gas-liquid cyclone separator of refrigeration system are analyzed. And different pressure-drop models of pneumatic tube concerning several types of cyclone separator were calculated and verified. The result shows that for a smooth wall cyclone separator’ pressure drop, at the low concentration, the simple pressure drop model is sufficient. But when the wall is rough, it is better to use Barth and Muschelknautz model and the Stairmand model is more accurate to calculate the frictional factor.

Abstract: Aimed at the vibrations of driver seat and wheel of a working fork-lift truck, the acceleration was measured and a vibration analysis based on the finite element method was made. Comparing the finite element analysis result with the result of model test analysis, the finite model is modified with the result of test. The mode analysis is done. The result shows that the fork-lift truck driver seat and wheel frequency is far away from the exciting frequency of engine. The vibration is forced vibration but not resonance.

Abstract: According to the crane dynamics theory, the dynamical model of a bridge crane's three main mechanisms is established and the dynamical load is determined under different work conditions in the paper. The three-dimensional solid model of the bridge crane is built by Pro/E, and then which is imported in ADAMS through the interface module of Mech/Pro. The virtual prototype model of the bridge crane is formed in ADAMS when relevant constraints and loads are applied. Based on the model, the bridge crane’s kinematics and dynamics performances are simulated and analyzed, and which shows that the simulation results can provide valuable guidances for design of the bridge crane.

Abstract: This paper is to present a new semi-suspension that is designed for Omni-directional four wheels-driven electric vehicles. With the use of band spring and lower cross arm this kind of suspension is characterized by the simply and compactly structure, flexible steering and better loading capacity. A prototype is designed and built based on the geometric model and mathematical description using Matlab.