Chapter 400: Help in times of need
The first users to receive the trial version of the software are undoubtedly the nearby Beijing Hang University and the Institute of Computing Technology of the Chinese Academy of Sciences.
Of course, due to the company's formalized process and legal perfection, an authorization document still needs to be sent out through the postal service.
After all, postmarks are an important basis for judging the period (time limit) and delivery behavior in civil activities, especially in the process of making a contract.
In this era without electronic signing, this matter is particularly important.
But after all, it was delivered within the same city, and the priority was high, so both parties received the paper authorization license on the second day after the trial version was released.
In fact, they don't even need an installation program - the TORC Multiphysics software itself was born in the computer room of Beijing Airlines and the Institute of Computing Technology.
It’s just that the validity of this authorization document means that researchers in these two institutions can use the new software in publicly published results or in the process of completing projects.
Subsequently, a little later, several central enterprises and universities at the headquarters of the Science and Technology Commission system, including the Aviation Industry Corporation and the Aerospace Corporation, also received the same permission.
According to the plan set by Chang Haonan, users of the upgraded version will receive the software installation CD about two to three weeks before users of the professional version. This is mainly due to the fact that the former are basically confidential units within the system. , in case there are any flaws in legal provisions or software design, if they are the first to discover it, the impact will be relatively controllable.
As a price, the projects in the hands of these units are basically hard work with long cycles and large investment, so generally speaking, complete usage feedback cannot be obtained in a short period of time.
But everything is always special.
Almost at the same time that relevant units began to receive TORCH Multiphysics software installation packages in batches, Bingcheng University of Technology.
Professor Li Zhihong’s research team has been troubled by the project in their hands for a long time.
Since 1992, they have been collaborating with colleagues from several other universities to conduct research on high-precision spiral bevel gear processing.
This is a very common part in high-end aerospace, equipment manufacturing and other fields. For example, the turbofan 10 engine and heavy-duty die forging press that Chang Haonan is concentrating on preparing to tackle, both require a large number of high-precision spiral bevel gears.
Due to the complex spatial shape and structure, its processing is quite difficult. For a long time, it can only be completed by CNC gear grinding machines imported from Gleason in the United States and Klingenberg in Germany.
However, the functions of imported gear grinding machines are limited, and many products are restricted and cannot be used in manufacturing. If problems are encountered during production, the data must be transmitted to the machine tool manufacturer, and the foreign party technicians to adjust the parameters.
It is equivalent to a manufacturer here in China spending a huge sum of 15-20 million to buy a machine, but it is only working as an operator for a foreign supplier. Not only can it not produce the most scarce parts, but it can even be used in related fields. knowledge is out of reach.
It’s just plain bullying!
Therefore, it is imperative to obtain its own digital precision machining capabilities.
In the first half of this year, the original purpose of research on high-precision spiral bevel gears was included in the scope of the Seiko Project, and expanded into a broader "new principle of digital precision machining of high-performance complex curved surfaces" and new methods”.
After obtaining new resources and funding, Professor Li Zhihong finally began to change the last step in the traditional three-step process of "gear milling-heat treatment-grinding" to gear grinding, and conducted it in a laboratory environment A finished product that met the requirements was trial-produced, but it was never transferred to industrial production.
The most difficult part of this process is that the gear grinding process must be coordinated with the heat treatment process to correct the deformation error generated during the latter process. However, the grinding process itself will generate a large amount of grinding heat, which affects the correction. accuracy and subsequent stress relief process.
Relevant foreign manufacturers have been deeply involved in this field for decades or even hundreds of years, and each has a set of fairly accurate grinding processing models. Even so, for different specific products, a large number of tests are still required to determine the processing parameter.
Domestic research has only started less than 20 years ago, so it can be imagined how difficult it is to catch up in a short period of time.
"Wang Jie."
Li Zhihong took off his glasses, rubbed the top of his head that was already losing some hair, and called over a student next to him who was immersed in drawing.
"Send this new process requirement to the processing factory."
Wang Jie on the other side of the room put down the pencil and compass in his hand, walked over and took a pencil from the professor's hand. A thick stack of documents, I looked at it twice after opening it.
"Have you adjusted the empirical parameters in the grinding force calculation formula again?"
Even Wang Jie, who has just joined the research team for about a year, is already familiar with it.
Li Zhihong said nothing, just nodded.
"Alas..."
Wang Jie sighed inaudibly while putting the documents in his hands into his schoolbag.
To engage in technology research and development projects, it is indeed high-end to say that it can easily cost tens or even millions of R&D funds. What we usually come into contact with are highly classified national weapons, which is very satisfying
But on the other hand, On the other hand, most of the work they usually do can be summarized as adjusting parameters, trial production, sample analysis, adjusting parameters again, and trial production again...
It would be no problem even if it were an ordinary high school student.
After passing the initial fresh stage, although Wang Jie will still handle his work diligently, he will inevitably have doubts about his own value.
They have also tried to use numerical calculations to theoretically calculate the heat treatment and grinding processes to repeat the number of iterations. However, due to the temperature, stress conditions and calculation boundaries of the workpiece during the entire processing process, It kept changing, and in the end the results they calculated were completely irrelevant to the actual situation.
This is certainly not unexpected -
If the results could be obtained so easily by calculation, then several top companies in the industry would have used them long ago, instead of continuing to rely on the methods passed down from their ancestors. Empirical formula for eating.
But it is really difficult for late-developing countries, especially China, a late-developing country whose economic level is not yet high.
“Don’t be discouraged. In fact, our progress in the past six months is already very fast, whether compared to the past or compared to our foreign counterparts.”
Li Zhihong put on his glasses again. , enlighten your students.
"Teacher, I know this. I just feel that this is not the same as the scientific research I expected..."
"Oh...we are engaged in mechanical manufacturing..." Halfway through the words, the office The room door was pushed open.
The person who rushed in was the senior brother and small boss of the research team, Zheng Shudong.
"Teacher Li, the school computing center said that they received a brand new numerical simulation software today, which may be able to solve our problem."
As soon as he finished speaking, Li Zhihong and Wang Jie stared directly at him.
Especially the latter.
I just complained about the gap between reality and ideals, and now comes an opportunity to realize my ideals.
“Tell me more about it?”
As a tutor, Li Zhihong is much more steady after all, but his eyes also reveal excitement.
"A few days ago, Beijing University of Science and Technology and the Institute of Computing Technology of the Academy of Sciences jointly launched a software development project, mainly to solve the strong nonlinear problem in the multi-field coincidence simulation process."
The other two people in the room They looked at each other.
Obviously, for them, this is simply a sleepy pillow.
“Let’s go and have a look.”
The three of them left the laboratory quickly. Professor Li Zhihong even forgot to fasten the cap of his pen.
...
When they came to the computer room, there were already several acquaintances there.
"Lao Li, when this software was delivered to me today, the first thing I thought of was you. Come and take a look at this, the instruction manual and promotional brochure sent by Torch Company."
< br>Li Zhihong squeezed through the crowd and got in front of the computer.
“TORCHMultiphysics… the name is quite straightforward.”
He pushed up his glasses. Although his tone was calm, his eyes were locked on the lines of text on the screen.
The previous large paragraph is really basic for professional researchers, but Li Zhihong was a little embarrassed to turn directly to the part that interested him most.
"Teacher, you can directly select chapters here."
Wang Jie's stupid speech quickly helped his tutor find the right path.
“What’s the rush? Others may still want to see it...”
Although Li Zhihong said this, his body followed his instructions very honestly and clicked directly into the "Force and Heat Coupling" section.
“The temperature field is a collection of grinding temperature distribution in the spatial domain and time domain caused by various heat sources...”
He quickly became fully involved.
About twenty minutes later, the master and apprentice looked at each other several times.
“Is this a bit close to the scientific research you expected?”
The first person to speak was naturally Li Zhihong.
He adjusted his glasses and asked Wang Jie.
“Close, too close.”
The latter kept nodding.
The director of the supercomputing center next to him saw this and finally said:
"Actually, I originally wanted to ask the development director of this software, who is also Director Chang of the Beijing Airlines Supercomputing Center, to give a special lecture, but after calling me, the person told me that he was not in school recently, so it didn't happen."
< br>"It doesn't matter."
Li Zhihong shook his head:
"The application of this software is not difficult, even for people who are not computer majors. It is not difficult to master it. As for the specific effects... Of course We still need to test to know.”
After saying that, he looked at the other party with questioning eyes.
The director obviously understood what he meant:
"No problem, in the next few months this year, the supercomputing time allocated to your research team will be doubled!"
The next chapter has been reviewed. , wait a minute
(End of this chapter)