Applied Mechanics and Materials Vols. 668-669

Abstract: The rear axle structure is studied and analyzed, and the skeleton structure, elements and parameters provided in advance in the template are introduced briefly. Taking a typical part of rear axle for instance, using Catia software to design product template, so as to shorten the product development cycle.

Abstract: Taking fresh agricultral products sale logistics systems as research object, this paper established an index system for the risk evaluation of the sale logistics of fresh agricultral products. In determining the weight of evaluation index, the calculation is combined with AHP and entropy method, and we evaluated the safety of the sale logistics of fresh agricultral products using Fuzzy comprehensive evaluation.

Abstract: Tourism has played an active promoting role in the development of economy growth as pillar industry of Xingwen County. Based on exploration of resources engineering, evaluation index system about tourism resource value and tourism conditions for supporting force has been established. The first step was determined weights of the evaluation factor by applying AHP (Analytic Hierarchy Process), and then the fuzzy mathematical evaluation method was used to calculate comprehensive scores of the tourism resource. The results show that the tourism resources are a distinct characteristic of Xingwen Geo-park and have great potential for further development. However, with a relatively slow economic growth, its current development is not that impressive. In terms of the evaluation results and the actual situation of the Geo-park, the author has put forward some measures which aim at providing a reference for the healthy development of the Geo-park tour.

Abstract: For the parts information describing in decision-making process of CAPP system, with the concept of domain ontology, part information model, which includes four information layer(parts layer, feature layer, topology layer and process layer), has been established, a hierarchical description of process information has been achieved while build a domain ontology model of shaft parts by using the protégé, a ontology editing software. using a stepped shaft part as example illustrate the information indicating of the part information model in order to verify the feasibility of the model has been created, it has laid a good foundation to build process knowledge database for the CAPP system.

Abstract: In this paper, NX-based parametric design of precision die-cutting machine was introduced according to enterprises' rapid design requirements. On the basis of the analysis of the classification and development trend of die cutting machine, the transmission system and stepper motors was studied, the four bar linkage mechanism was designed, and the design scheme was determined. Finally, UG/NX movement simulation was employed to show the working situation of the various mechanisms in the system, and parametric design of the whole mechanisms was realized.

Abstract: For the problem of pellet density control in the fish feed extrusion forming process, the influence of extrusion speed, the depth of die hole and the interaction of the two factors on feed pellet density was studied by experiment method. The study results own good application value because as theoretical basis they can be used to determine the extrusion scheme and optimize the granulator structural parameters.

Abstract: Because of high cooling efficiency, simple structure and good reliability, the liquid-box self-circulation evaporative cooling system has broad applications in the field of electronic equipments. By designing and developing a set of Liquid-box self-circulating evaporative cooling system experimental platform for electronic components. We can study the influence of pipe diameter, height of liquid level and thermal conductive pad on the cooling efficiency of the system.

Abstract: In order to accelerate the development for LNG carrier liquid handling simulator, this paper describes the liquid handling process. Approaches to composition of interactive mathematical models for the system are outlined. The connections between these models are described. In view of the current situation of simulator development, this paper also provides the perspective of the whole model system. As the result of incorporation of these models into the simulator, the system is being developed by model-based design methodology. It is expected through this paper that the development of the simulator can reduce training time and cost because the researchers can understand the overall modeling process from system level.