"The West Chamber" and "Mechanics of Materials (2100 Edition)". ”

Mu Jingchi reviewed the knowledge extracted by the system, and there was a song, the famous song "West Chamber" after the string, and the 2100 edition of the textbook of material mechanics.

"It's okay!" Mu Jingchi was a little greedy.

The song "West Chamber" is naturally a good song, although at that time Wang Leehom, Jay Chou, Tao Zhe, Lin Junjie and other immortals fought. But on the Internet, Hou Xian, Xu Song, Xu Liang, Wang Sulong and others also have a lot of popularity.

The song "West Chamber" still has a good popularity.

The emergence of "Mechanics of Materials (2100 Edition)" also let Mu Jingchi know that the extraction of knowledge is not limited to 2069. For example, this time, it's 2100.

Mechanics is not simple, and material mechanics is no exception.

It's just that the current topic of material mechanics and Mujingchi does not present a role directly related to the present, and perhaps Mujingchi can be directly used in the future, but not now.

Because the object of study of material mechanics is the component, that is, the component after the material has been processed.

Mechanics of materials is a discipline that studies the calculation of the strength, stiffness, and stability of components.

When the designed components have sufficient strength, stiffness and stability, they can work safely and reliably under the load, indicating that the design meets the safety requirements.

However, proper design should also make good use of the potential of the material to reduce material consumption.

Therefore, both safe use and economical are the hallmarks of sound design.

The task of material mechanics is to provide the necessary theoretical basis and calculation method for selecting suitable materials and determining reasonable cross-sectional shape and size for components under the condition of ensuring that the components are safe and economical.

To put it simply, the task of material mechanics is not the research and development of materials, but the application of materials.

That's why Mu Jingchi was a little dissatisfied.

Although he was not satisfied, Mu Jingchi still checked the book of material mechanics.

It is not directly related to the current material research and development work, but the knowledge in it is correct, it has been verified by experiments, and the content in it can inspire him and allow him to learn more knowledge.

"Introduction, Axial Tension and Compression, Torsion and Shear, Bending Internal Forces and Bending Stresses, Bending Deformation, Stress State and Strength Theory, Strength Calculation of Combined Deformations, Compression Bar Stabilization, Energy Ideas, Dynamic Loads and Alternating Stresses... ”

This is the big chapter category, and there are many more smaller chapters below this big chapter.

Practical calculation of shear utility and extrusion, calculation of normal stress strength of beam, reasonable stiffness design of beam, specific energy of spatial stress state, equivalent stress and strength conditions, stress calculation of eccentric compression, calculation of critical force of ideal compression rod, etc.

The names of these knowledge Mu Jingchi are very familiar, because he is a student of the School of Materials, and material mechanics is a compulsory subject.

It's just that the content and knowledge in it are much richer.

Flipping through the pages of the book of this system a little, Mu Jingchi saw that the page number had reached three thousand, imagine its thickness. What is the page number of Mechanics of Materials at Tsinghua University?

324！

Ten times the amount of knowledge.

"Learning still has to be learned, this is the 2100 year old materials science textbook. In fact, all kinds of materials science textbooks are related to knowledge, and I can still learn a lot of new theoretical knowledge from this material mechanics (2100 edition). ”

"What's more, I can also learn various material formulas from it, touch on a deeper level of computational materials, and have a deeper understanding of the materials themselves. ”

···

Following.

Mu Jingchi went to the school library, where he borrowed textbooks from the Department of Mathematical Sciences and the Department of Physics.

There is no way, Mu Jingchi is in trouble.

Mathematics and physics in 2100 are not at the same level as mathematics and physics now, so Mu Jingchi can't understand many formulas and calculation methods in "Mechanics of Materials (2100 Edition)".

In the past 80 years, although mathematics and physics have not made much breakthroughs in big conjectures, for example, the seven major problems of mathematics are still the seven major problems.

There is no land boat to help solve it.

However, there are many second-order mathematical conjectures and physical theories that have been confirmed, so these theories and formulas are directly applied to the calculation of the mechanics of materials.

However, Mu Jingchi is not a math guru or a physics guru.

Materials science is an interdisciplinary discipline, but mathematics is not as good as that of students in the Department of Mathematics, and physics is not as good as that of students in the Department of Physics.

Therefore, Mu Jingchi needs to learn and supplement his knowledge of mathematics and physics.

"Last time, I said that I would make up for math and physics, but I didn't expect it to come so quickly. Mu Jingchi thought to himself while using the teacher's library card to borrow these textbooks and books out of the library.

The teacher library card is still easier to use than the student library card, at least in terms of the number of books, it has an advantage.

He was not prepared to study mathematics and physics in school, and his efficiency was not as high as that of his own study at home. At school, Mu Jingchi still plans to continue to engage in research projects, study mathematics and physics, and go to the study at night.

If you don't understand something, you can also ask professors from the Department of Mathematical Sciences and the Department of Physics.

"Could it be that when I am engaged in materials research, I still have to break through in mathematics and physics?" Mu Jingchi thought so, but soon he shook his head, "What I got is not a system that blows up the sky, my day is only 24 hours, I can't sleep or eat, time and energy are limited!"

"Willing, willing, giving will be gained. Mu Jingchi sighed, "If I don't go into the world of mathematics and physics, I can concentrate more on the world of materials and achieve greater results." ”

"Maybe when I get to the top of my game in materials research, I can go to the world of mathematics and physics. ”

"The future is unknowable. ”

Mu Jingchi moved these teaching materials into his BMW X6 and then went to the Materials Research Building.

Although I am not going to go to the world of mathematics and physics, the calculation methods and theoretical knowledge in Mechanics of Materials (2100 Edition) can still be applied.

After all, materials are engineering, not sciences like mathematics and physics.

There are still many cases where you don't understand the principle, especially when you have a chance to successfully develop a material, as long as it can be manufactured repeatedly.

For the material, you can foresee it, but you don't know why, and wait for scientific and technological progress to seek theoretical support.

···

"I believe you already have some understanding of the dislocation theory, and you also know the importance of this experiment, now start the project experiment in the general direction of the scheme!"

Although dislocation theory I. is only a part of the whole dislocation theory system, it can also bring performance improvement to metal materials.

Just like the Z325 series.

"Yes, Doctor. ”

The four graduate students and Ai Xiaosheng are very motivated, which is due to many factors. On the one hand, the experiment is well-funded and resourceful, and on the other hand, after a few days of research, they found that the dislocation theory I seems to be very interesting.