Search

Aiming at the pain points such as insufficient technical reserves and high operation and maintenance costs in the promotion of production management informatization in small and medium-sized discrete manufacturing enterprises, a multi-tenant discrete MES system architecture is proposed. From the perspective of MES functional structure, business processes and scheduling methods, it provides a solution for the development and integration of multi-tenant discrete MES. An information management process system, which centers on quality inspection and control, supports dynamic scheduling of orders, and integrats personnel management, equipment management, material management, process management and document management has been estbalished. It realizes the information monitoring and management of the entire process from product orders to delivery of finished products, helping small and medium-sized discrete manufacturing companies to achieve the purpose of traceable production quality problems and the order completion rate at a lower cost. Practice shows that the multi-tenant discrete MES has played an important role in helping small and medium-sized enterprises in the process of digitalization, networking and intelligent transformation.

The vibration fatigue life assessment of vehicle radar is carried out according to the random load of transportation faced by vehicle radar in service. The refined finite element model of vehicle-mounted radar in transportation state is established to investigate its inherent characteristics. Based on modal method, Frequency response analysis and random vibration analysis was carried out. Based on S-N curve and cumulative damage theory, fatigue life prediction was carried out. The results show that the fatigue damage of dangerous parts is very big. So it is suggested to improve the structure to reduce the stress concentration, use different materials in different parts, improve the processing technology to improve the strength, etc.

The steel box beam in the Gulf Bridge adopts huge segment lifting construction method, with steel tube falsework as a temporary bridge pier. In this paper, established the finite element model of the steel tube falsework, determined the relevant calculation parameters according to the applicable bridge codes, calculated working conditions and the load, and analyzed the stability of the falsework. The results showed that the falsework meet the stability requirements, and the plane connecting bar produced lateral instability. Currently research for the combined steel tube falsework using the large-tonnage lifting construction is rare reported, so the research can provide useful reference for such type of design and construction of the falsework.