As an important basic course for students majoring in materials discipline, college physics plays a crucial role in the whole undergraduate training program. At present, there are few reports on the research about the construction of college physics courses for materials majors through the combination of online and offline methods. This paper summarizes the content system, teaching mode and assessment method for the reform of university physics courses in materials related majors through years of teaching practice. Furthermore, the teaching effect has been unanimously satisfied by students. It is hoped that this teaching method can adapt to the teaching of college physics courses for more students majoring in materials in universities, and promote the display of college physics courses in in the training of science and engineering students.

In order to explore the factors influencing the particle flow rate, the indoor pepper pot experiment was combined with PFC2D and 3D. The results show that the particle mass flow rate is positively correlated with the vessel aperture in a certain range, and meets Beverloo formula, and the particle flow rate has a negative correlation with the particle diameter, particle stiffness, friction coefficient and other parameters. In addition, the inclination angle and external force at the opening also have important influence on the particle movement. Increasing the inclination angle can change the flow state of the particles from funnel to horizontal push flow, and increase the flow rate. The external force can destroy the arching structure formed between the particles and reduce the probability of blockage.