Chapter 113 Computational Materials
"Let's not waste time on small talk and get down to business. Wu Tong, I heard from Old Pan that you made a mathematical model. Let's see if it's a mule or a horse. I'll first see if it's feasible. I'll let Cheng Xu take you to see what it is!" Old Cheng ordered directly.
Wu Tong went back yesterday and repeated the deduction of a manuscript. When Elder Cheng pointed it out, she took it out of her backpack and handed it over with both hands. "Elder Cheng, please give me your advice!"
She is just getting started in materials science, and it is great that such a great man is willing to give her some pointers. Thank you, old man, for being such a good teacher.
From the very beginning, as soon as he saw it, the whole page was filled with mathematical formulas, which were so twisted and complicated that Cheng Huanan couldn't help but feel a toothache. It was a typical style of the School of Mathematics. The things produced by the mathematicians were really frustrating. If he was good at mathematics, would he have to bow his head and ask old Pan for help every time!
However, since he was asked, Cheng Huanan still gritted his teeth and continued reading. After so many years of accumulation, he said that he was not good at math, but compared with those who were professional mathematicians, he did have a basic foundation.
Especially since these are some material science transformations, he can generally understand the logic.
As he looked through the documents, Cheng Huanan's expression became more and more serious. He was extremely familiar with those sensitive data.
"Raptor F-22 model layout data?" His first reaction was, is Old Pan crazy? How can he give such confidential project information to a child?
"I had some feelings at the moment, so I did some deductions and deduced some seemingly key data. The dean has asked me to sign a confidentiality agreement!" Wu Tong was scratching her head. When she was deducing, she really didn't expect that it would involve confidentiality regulations.
A moment of inspiration led to the deduction of someone's secret information? This was the shock of Cheng Huanan's teacher and student.
Cheng Huanan was the most touched. How could he not know that the data of the Raptor could be derived so easily? Two years ago, Lao Pan assisted Chen Xiagang of Xifei and spent four months to deduce the Poincare airway. The excitement of the two old men is still vivid in my mind.
Compared to Wu Tong's casual promotion, those two complacent old guys may have hit the wall. No wonder Pan Wenhua, that cunning old guy, was so willing to invest and bow to him. With such a big treasure, he must do his best to protect it!
Hmm... maybe there is some room for development. I have to thank Lao Pan for sending such a talented person to him. Cheng Xu and the others are still in need of a junior sister, and he is still in need of a closed disciple!
Cheng Huanan paid more attention to it and flipped through the pages. He saw the derivation of the materials at the back. Although it was a bit immature, the logical angle was novel and correct. Was it a promising direction?
A child who is self-taught and only attended a few material classes can come up with such a design. Coupled with this child's top-notch math skills and photographic memory, this talent means he will definitely be the last disciple!
With a rare smile in his eyes, Cheng Huanan gave instructions more naturally, "Cheng Xu, teach Wu Tong some basics, take Wu Tong to recognize the instruments, and then do a calculation simulation!"
The foundation must be laid from the basics, starting now. He is ready to compete with the School of Mathematics for talents.
"Wu Tong, come over here with me. Look, this is our scanning electron microscope, Thermofisher 1050. This is a Leica metallographic microscope. This is our stretching machine... This room holds the reactor... This is the computational simulation studio..."
"Computational materials science is a new field in recent years. It is used as an auxiliary means in current material research. Through experimental data, mathematical models are established, which are then simulated by computers. Through various repeated simulations, the mathematical models are revised. The manufacturing process is designed based on the revised mathematical model, and the material entities are manufactured for testing..." Ruan Chengxu warmly and in detail introduced the computational materials science involved in the simulation to Wu Tong, which is his minor.
"Or we can directly conduct simulation calculations based on some specific materials and reaction mechanisms to obtain a specific data model, and then prepare the materials in the proportion that meets the target through experimental design, which is a kind of predictive research.
However, computational materials science can only make approximate estimates at best. A little inexplicable reason in material testing can cause earth-shaking differences. Often, there will be jokes where the calculated results are very different from the final results..."
“At present, we still lack a truly predictive computational materials science theory as a basis for research!” Ruan Chengxu sighed with regret.
When he first came into contact with materials, he was still ambitious and looked forward to preparing various super materials to help national construction, punch Old M, kick European and African criminals, and go down in history.
When he really got into it, he found that the four major tiankengs were indeed worthy of their reputation. He, a 26-year-old young man, was still buried in the tiankeng, with no sight of the sun, and there was still no sign of his future.
"This subject requires a high level of mathematics and requires the cooperation of computers. This is a perfect match for you, Wu Tong!" With Wu Tong's mathematical foundation, switching to computing materials would be like a duck in water. Those mathematical problems that seemed tedious and complicated to them would probably not be a problem for Wu Tong.
With Wu Tong's background as the material, his teacher's love for talent might have already reserved their junior sister. Therefore, Ruan Chengxu explained it with extra care.
"Come here, Wu Tong, I will teach you how to import data and build a model!" Ruan Chengxu demonstrated to Wu Tong using the laboratory's computer. The laboratory's computers were equipped with relatively advanced technology, far beyond what ordinary computers on the market could offer. In terms of performance, only supercomputers could surpass them by a large margin.
Wu Tong is not unfamiliar with computational materials science. It is a field she has been interested in since she came into contact with materials science. The mathematical model she has established is based on a certain foundation of computational materials science. However, her transformation is more thorough.
After carefully learning the operating methods from Ruan Chengxu, Wu Tong felt that she needed to add some computer-related learning in the future, including various computer languages, software programming, professional software VASP and Phonopy for computational materials science, and even detailed chemistry and materials science content.
After becoming a little more proficient, Wu Tong began to input her calculation model and various data line by line. Her material model was deduced based on the need for the material to have creep resistance, oxidation resistance, sufficiently high strength, stability, and extremely strong tolerance.
Compared with ordinary workers, Wu Tong's deduction has an absolute direction to rely on, which is the best trial and error tool. When the periodic table of elements is listed and the various existing element symbols pass through her mind, the elements that meet her requirements for the correct direction are naturally selected by her first choice, so as to establish a titanium-aluminum alloy model that is more like aviation materials and has better performance.
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