Applied Mechanics and Materials Vol. 455

Abstract: According to the characteristics of carbon fiber and design requirements of angle interlocking carbon fiber multilayer loom, the fixed-length airflow weft accumulator is adopted, so as to realize the radial yarn unwinding. To get the accurate motion law of yarn under the effect of air flow, Solid works is introduced in 3D modeling and integrated design. In addition, the statics and dynamics analysis of weft accumulator has been carried on through the ANSYS and ADAMS software. The results of analysis show that the design is reasonable and the movement is smooth.

Abstract: This paper analyzes the traction mechanism of the angle interlocking multilayer loom of carbon fiber.It can enlarge the output force of the cylinder through the double-rocker stress amplification mechanism,which is applied to the upper roller,making the upper and lower roller compact, then pulling away the cloth by from the cloth woven mouth power system. This paper deduced the mathematical calculation formula of the moment .In addition,the simulation analysis of dynamics and statics for the key component of the model has been carried on. Through the finite element analysis software.Analysis shows that the parts could work according to schedule which provides a powerful guarantee for the realization of the function of the entire organization .

Abstract: The level of an enterprises process management related to its existence and development tightly, in order to evaluate it accurately, the evaluation index system was presented, which was formed by 10 first level indexes and 39 second level indexes, in which the latter is the meticulous and materialization of the former. The methods of evaluation by total marks, weighting comprehensive evaluation on multi-index system and fuzzy comprehensive evaluation were applied to the process management. Compared with the other two ways, the fuzzy comprehensive evaluation is more accurate and comprehensive since it settle the quantification of the nature indexes during the analysis process, and it also solve the multi-factors evaluation who have different unit.

Abstract: For resource-constrained project scheduling problems, with aircraft assembly as its background, we established its mathematics model as constraint satisfaction problem. An improved critical path scheduling algorithm is proposed, considering the constraints of precedence relations, resource constraints and space constraints, through the two stages of planning, reaching for aircraft assembly task scheduling optimization objectives. Through the given numerical example results show that, when the objective consists in minimizing the project duration, the algorithm has better performance.

Abstract: This paper mainly aims at the special requirement of the solar energys application in tunnel direct lighting engineering, where the light receiver is fixed. Therefore, it has given a new automatic tracking method of polar axis type, which can effectively make the concentrator to realize the function of tracking the sun automatically with high precision and fixed-point output. Based on expounding the working principle of the automatic tracker with polar axis, meanwhile combining with the obliquely installed concentrator load, it talks about the detailed design and explanation of mechanical structure, characteristics and implementation of the suns hour angle and declination angle tracking mechanism.