Applied Mechanics and Materials Vols. 556-562

Abstract: Against the problem of large machining error and low productivity of aluminum alloy spherical plain bearing, the paper is concentrated on building finite element model in MATLAB to research the radial and axial deformation law under various cutting conditions with theories of heat transfer, isoparametric element and functional variational method, providing theoretical and data support to enhance machining accuracy of spherical plain bearing outer ring.

Abstract: Straightening process is to achieve the best standard and improve geometric quality of products caused by heat treatments and internal structural changes. The straightening of the guide rail was analyzed using the load-deflection straightening model. In this paper, three dimensional FE simulation of the reverse bending and straightening of the steel bar conducted as part of the research to numerically investigate for the mechanical engineering applications are presented. This paper is focused on the straightening precision of the guide rail and springback prediction using finite element method. According to the experimental results, by using numerical simulation with finite element analysis (FEA), the relationships among the maximal loading stroke and straightening stroke with the cross-section shape will be gained, and also the result curves were discussed qualitatively. The appropriateness of the simulation procedures employed in this work is represented for similar condition that is a good agreement between the finite element method and experimental results.

Abstract: Experimental, analytical and finite element techniques are commonly known methods used in determining highly localized stress occurring in the body under loading as a result of geometric discontinuities. In this study, we use NURBS-based isogeometric analysis (IGA) to investigate the stress concentration factor (SCF) on three-dimensional geometry with discontinuity feature. The results show that IGA technique is in good agreement with analytical values, thus providing a more effective realistic way of determining SCF.

Abstract: As the construction technology is developing nowadays, the supportive capability and security of multi-layer template has been more focused, and multi-storey framework supports system has been applied more applied in the high rise construction. However, collapses of supports system and cracks of floor happen frequently during the period of construction as a result of unsuitable configuration of supports system, incorrect removal of framework supports as well as curing of early-age concrete. All the facts above affect the safety of construction and the performance of building. Therefore, the research of supportive capability and security is significant to the safety of the whole construction.

Abstract: In this paper, The vertical vibration’s analytical expression of Euler-Bernoulli beam traveled by moving loads is used to analyze the effect factors such as vehicle speed and damping ratio. The calculating program is made with MATLAB to analyze the dynamic response of a bridge as an illustrative example. A 32 meters simply supported beam traversed by moving loads of 8 ICE3 motor cars is analyzed. The calculation results show that the maximum displacement of the bridge appears at or near the mid-span and it has nothing to do with the position of the loads. The dynamic amplification coefficient of displacement at mid-span is not linearly increased with the vehicle speed improving. The damping ratio can decrease the dynamic response of the bridge dramatically, especially at the resonance speed.

Abstract: According to the design parameters of the actual project. In this essay, the plate heat exchanger will be selected as the heat exchanger of secondary sewage-source heat pump system . The plate heat exchanger was designed first calculation, according to the selected plate heat exchanger structure size, flow rate of the change on the influence of the dynamic characteristics, such as inlet velocity and outlet velocity on wall temperature, the influence of different inlet velocity variation signal effects of curves for exit temperature, etc.

Abstract: With the further development of information science and technology, construction industry also found its positioning in the development trend. Intelligent building structure design wins structure designers’ widespread attention and is widely used. Intelligent building structural design mainly makes integrate use of industry technology, intelligent control technology and computer network technology. This fusion opens a new information door to architectural design industry, and ushers a new development trend of intelligent design. This paper analyzes the intelligent optimization design of architectural structure.

Abstract: The vibration of the induction synchronization segment (ISS) have an important influence on the parcel loading accuracy and the service life of the parcel sorting machine (PSM). The vibration model of the ISS is established by using the finite element method. And the analysis of the structural design impact on the natural frequency of the ISS is provided. The relationship between the operation frequency and the natural frequency of the ISS is obtained by means of the modal simulation analysis. The vibration characteristics of the ISS can provide reference frame for the design.

Abstract: Longcha highway was a part of highway from Quanzhou city, Hujian province to Nanlin city, Guangxi Zhuang Autonomous Prefecture. Twelve color plants were used on the Longcha highway. In order to restore and form better landscape, photosynthetic and fluorescence habits of color plants were determined. Acer palmatum ‘Atropurpureum’ and Hedera helix ‘Variegatum’ were shade plant, growing well in the shade of the trees or side shading environment. Prunus cerasifera ‘Pissardii’, Euonymus japonicus ‘Variegata’ and Hedera helix ‘Variegatum’ were strong sun plant, growing better in intensity light. Other seven kinds of color plant could adapt the strong light environment, which was proved in the Longcha highway light environment. Arbor was used in the form of isolated planting and group planting in the slope. Shrub was used in the form of topiary tree and cover plant. Vine was used in the form of cover plant.

Abstract: Longcha highway was a part of highway from Quanzhou city, Hujian province to Nanlin city, Guangxi Zhuang Autonomous Prefecture. In order to dissolve and match with around natural landscape, restore the landscape and environment of red sandstone, the red sandstone slope was investigated. The results showed that the slope of red sandstone was not suitable for the plant. Several measures were taken for the restoring the landscape and plants. First, dig planting groove in the appropriate place on the slope. Second, transplant or grow some plants in the planting groove. Third, plants were planted in the planting groove. Fourth, the slope could be restored by planting lawn. Some shrubs were planted in the lawn. Fifth, the slope was sprayed and sowed with the seeds of shrub. Sixth, the slope was coved with native grass stem tuber.