Taking the generator and turbine as an integrated system, the nonlinear coupling dynamic equations of the system are established by the finite element method. According to the dynamic equations, the global coupling relations among the structural parameters, fluid parameters and electromagnetic parameters are discovered. Based on the dynamic equations, the dynamic responses of the system are calculated and analyzed. The results show that not only the structural parameters, but also the fluid parameters and the electromagnetic parameters have significant effects on the dynamic responses of the system. Finally, an example is presented.

A hydraulic excavator is taken as the object to study. Considering the characteristics of slewing transmission mechanism of hydraulic excavator, the torsional vibration equation is established by the finite element method. According to the torsional vibration equation, the effects of the equivalent moment of inertia of working device on the torsional dynamic properties of slewing transmission mechanism are analyzed. Using the optimization theory, the mathematical model is built, which is by means of the equivalent moment of inertia of working device as objective function and by means of the position parameters of the working device as design variables. Based on the mathematical model, the optimization of torsional dynamic properties of slewing transmission mechanism is studied. Finally, a numerical example is presented.

After news communication enters the era of big data, algorithms recommendation, cloud computing, big data analysis and other technologies have been widely used in the field of media communication, media communication forms have changed in essence under the context of new intelligent algorithms. According to the analysis of the current situation of news and information dissemination in recent years, intelligent algorithm recommendation makes information dissemination and individual reading become more intelligent, and gradually changes the traditional dissemination mode of people seeking information. However, the abuse of technology also leads to issues such as content homogeneity, algorithm discrimination and big data killer, which directly threaten the Internet environment and information security, and may even cause negative impacts on society and economy in serious cases. Therefore, on the basis of understanding the development status of new media communication under the background of big data algorithm, this paper proposes corresponding communication methods according to the generation and dissemination mode of news in the context of intelligent algorithm, so as to provide required information for system users.

This paper based on the genetic algorithm,introduced part search process and respectively established the mathematical scheduling model of full loads vehicle optimal scheduling with soft time windows and of non-full loads on the basis of the long distance logistics transportation situation of some companys distribution center in Shenzhen. Then programmed to achieve the scheduling of multi-vehicle touting and selection, and conducted example analysis.

This paper establishs a coupled model on kinetic and tribological of cylinder liner-piston-piston ring system and takes the cylinder liner-piston system as an automatic control system based on the finite difference method and overrelaxation iteration method; the numerical solutions of the model is put forward and designed the overall the calculation process of coupling model, providing theoretical basis for further analyzing the piston system dynamic performance.