At the earliest stage of his scientific research career, Zheng Zhemin mainly studied thermoelasticity and hydroelasticity. After returning to China, he is engaged in the research of seismic response and turbine blade profile according to the needs of the country. Later, due to the adjustment of the national scientific research layout, Zheng Zhemin chose the research direction of high-speed and high-pressure plastic dynamics, and achieved complete and in-depth research results in explosive forming in a short time, thus opening the prelude to the study of explosive mechanics. Academician Zheng Zhemin expounded the mechanism and model law of explosive forming, solved the processing problem of important rocket parts, and developed a new branch of mechanics-explosive mechanics. He presided over the formulation of the development plan of mechanics discipline for a long time, advocated the establishment of several new branches of mechanics and made important academic contributions. Zheng Zhemin has made extensive contributions to the development of explosive mechanics. They are:

(1) There is a deformation theory of thin plate under the action of underwater explosion shock wave in acoustic theory;

(2) There are quasi-steady penetration theory of high-speed jet, secondary loading theory in the later stage of explosion forming and bulging motion theory of blasting.

(3) The fluid elastic-plastic body model and various application theories are put forward to reflect the characteristics of high speed, high pressure and high temperature in explosion and impact problems and the coupling effect of inertia and strength;

(4) The similarity laws of various explosions and impacts are proposed;

(5) A variety of coupled motion theories are put forward, including the coupled motion of two objects and the coupling effect of the interaction between fluid properties and solid properties in the same object;

(6) In terms of stability, there are theories such as jet breakup, interface wave and adiabatic shear. In the study of underground nuclear explosion effect, Academician Zheng Zhemin and his collaborators put forward a fluid elastic-plastic model. The model expresses the fluid and solid characteristics and motion law of medium under explosion and impact load with unified equations, which can be regarded as the discipline symbol of explosion mechanics, can accurately predict the pressure attenuation law of underground nuclear test, and has made contributions to the first underground nuclear explosion equivalent prediction in China. In armor-piercing research, Academician Zheng Zhemin led the team to creatively put forward the relevant theories of jet opening, quasi-steady penetration and target strength; The armor-piercing similarity law and a more effective armor-piercing model than the internationally popular Tate formula are obtained. The high-speed flow breaking theory of armor-piercing projectile is established. The armor-piercing mechanism model and armor-piercing similarity law of metal armor are established, and the armor-piercing formula is more realistic than the internationally recognized Eichelberger formula. These works provide a solid mechanical foundation for the design and effect evaluation of related weapons in China.

Based on the theory of fluid elastoplasticity, Academician Zheng Zhemin also opened up key technical fields such as explosion treatment, gas outburst and underwater soft foundation treatment by explosion, which solved the core problems in major engineering construction and was widely used. In addition, in the study of material mechanics, his characterization of scaling theory hardness has an important influence in the world, and it was named C-C method after his and his collaborators' surnames.

At the same time, as the organizer and leader of the construction and development of mechanics discipline in China, Zheng Zhemin participated in and presided over the formulation of a series of important mechanics disciplines and related scientific plans. He grasped the development direction of China mechanics as a whole, and actively advocated, organized and participated in the establishment and development of many branches or fields of mechanics, such as thermoelasticity, hydroelasticity, mechanical behavior of materials, environmental mechanics, ocean engineering, disaster mechanics and nonlinear mechanics. Zheng Zhemin began to instruct graduate students in the 1950s. His first graduate student was Han Liangbi, who was assigned to Shanghai Nuclear Engineering Research and Design Institute after graduation and became the scientific and technological backbone of the unit. Since then, Mr. Zheng Zhemin has instructed graduate students in the 1960s to wish peace and Bai Yilong. After graduation, they all stayed in the Institute of Mechanics and became academic leaders in the field of solid mechanics. Among them, Bai Yilong was elected as an academician of China Academy of Sciences with 199 1.

Since 1978 resumed the postgraduate system, by 2004, Zheng Zhemin had trained 15 doctors and 20 masters; In addition, he also instructed five postdoctoral fellows. In the process of guiding graduate students, Mr. Zheng Zhemin pays attention to teaching students in accordance with their aptitude and gives full play to their characteristics and specialties. He is famous for being strict with students, but he also discusses with them on an equal footing. For graduate students' thesis work, he emphasizes rigorous analysis, experimental observation is fundamental, and experiment, analysis and calculation are combined. Most of the graduate students and postdoctoral students brought by Mr. Zheng Zhemin have become the backbone talents of their respective units, and they are responsible for scientific research, technology, teaching or management. By 2004, Zheng Zhemin had also supervised 8 doctoral students, 1 master students. 1 Zheng Zhemin, Qian Xuesen. Similarity law of stress of thin-walled cylindrical shell under rapid heating. Journal of the American Rocket Society,1952,22:144-149.

Zheng Zhemin. Model law of explosive forming. Science and Technology Report of State Science and Technology Commission, 1962.

3 Zheng Zhemin. Spatio-temporal formation of water hammer wave on flat plate. Science and Technology Report of State Science and Technology Commission, 1962.

4 Zheng Zhemin and Xie Bomin. Suggestions on calculation model of underground explosion. Research report of Institute of Mechanics, 1965.

5 Zheng Zhemin, Ming. Mechanical analysis and simplified model of armor piercing mechanism. Scientific and technological references (52 institutes), 1977.

Zheng Zhemin. Study on jet stability of armor-piercing projectile. Explosion and impact, 1980 (1).

7 Zheng Zhemin. Ordered dimension analysis of coal and gas outburst mechanism. Mechanics and Productive Architecture, Beijing: Peking University Publishing House, 1982.

8 Zheng Zhemin. Some thoughts on the reform of mechanics research institute. Annual report of Institute of Mechanics, Chinese Academy of Sciences, 1984.

9 Bai Yilong, Cheng Chemin and Yu Shanbing. Evolution of thermoplastic shear band. Attend the 16th International Conference. Danish theoretical and applied machinery company series: 1984.

10 Zheng Zhemin, etc. Study on interference mechanism of FRP on shaped charge jet. Report of Institute of Mechanics, Chinese Academy of Sciences,1981; Go on. Dynamic Load and Its Effects, Beijing: Science Press, 1986.

1 1 cheng chemin. Explosive welding mechanics. Essays on Strong Dynamic Loads and Their Effects, Beijing: Science Press, 1986.