Innovative design of campus green spaces in the context of the "One Belt, One Road" and the digital use of Silk Road elements

In recent years, the strategic development concept of “the Belt and Road Initiative” has been put forward in China, which brought new significance and connotation to the development of “Silk Road” in this era of globalization, digitalization and knowledge. As the starting point of the Silk Road, Xi 'an is also an international cultural metropolis that is further building and promoting economic prosperity and development. This special location has entrusted its unusual historical task. As the campus of Xi 'an Jiaotong University, the scientific and Technological Innovation Port in western China, located in Xi 'an, needs the rendering and influence of Silk Road culture. Therefore, in order to make teachers and students consciously inherit and appreciate the Silk Road culture, it is of great significance to make the diversity of the Silk Road culture reflect on the campus and create a unique campus landscape. The paper is divided into five chapters. Firstly, it summarises the development of Silk Road culture from different dimensions such as era, level and region, extracts different categories of elements, summarises them with the analysis of the research of Suzhou Silk Museum, and discusses how to apply these elements to campus landscape design. Take the landscape of the green space in the east part of the Innovation Port as a design sample, combine with the field investigation and analysis, further outline the shape, path, colour, material and plant elements, follow the principles and principles of campus landscape design, enumerate the plant elements with data, explore new application methods, define the design concept with characteristics, from the road, culture and ecological landscape configuration, characteristic silk road culture elements in the whole site. In this way, the Silk Road culture can be inherited, history can embrace the future, and a distinctive campus landscape can be created that adapts to the new trends of the times

A novel 3D printed compliant ball-end grinding tool with crystal structure: Feasibility and performance analysis

During grinding complex components with difficult-to-machine materials, compliance grinding tools often experience shortened life and weakened performance due to intense temperature rise. This paper presents a novel solution strategy of preparing crystal-structured compliance tools using multi jet fusion (MJF), and five structures were selected to evaluates its feasibility and grinding performance. The macro and micro elastic deformation of the tools were analyzed by combining finite element and experiment. The results show that the crystal structure provides similar macroscopic stiffness of the tools and introduces microscopic compliance anisotropy. The crystal structure resulted in a reduction of the grit pull-out ratio by more than 82.60 %, while also alleviating the adhesion of flexible substrates adhesion and the prevention of abrasive layer fall-off, leading to prolonged tool life. Furthermore, compliant grinding tools with a crystal structure achieved comparable material removal capacity, lower surface roughness, and higher energy efficiency. In addition, they used only 29.06 % to 36.22 % of the material consumed in manufacturing. Notably, the material removal rate (MMR) of the star-structure tool can reached 94.72 % of the solid-structure tool. The diamond-structure tool exhibited the lowest ground Ra, accompanied by a reduction in grinding temperature of 19.4 °C

FATIGUE LIFE ANALYSIS OF DIFFERENTIAL CASE OF ELECTRIC DRIVE ASSEMBLY BASED ON ACTUAL LOAD SPECTRUM (MT)

A method for the fatigue life analysis of the differential housing of the electric drive assembly based on the measured load spectrum is proposed. Taking the housing of an electric drive assembly differential of an electric vehicle as the research object, a finite element model of the housing is established, modal analysis is carried out, and modal test verification is carried out. On this basis, with the measured load spectrum of the differential housing as the load input, and the actual vehicle driving conditions as the boundary constraints, the dynamics simulation analysis of the differential housing is carried out. Based on the dynamic finite element analysis results of the differential housing of the electric drive assembly, the nominal stress method and the modified S-N curve of the housing, the fatigue life of the differential housing of the electric drive assembly is analyzed and researched. The results show that the fatigue failure position of the differential housing is consistent with the fatigue failure position during actual driving. Based on the actual driving load spectrum, the actual driving fatigue life of the differential housing can be accurately analyzed