When he heard the word 'finite-element', Hu Qinghe, who was sitting there, immediately jumped up from his seat as if he was sitting on an electric chair.
Hu Qinghe stared at Sun Hang in disbelief."
"Sun Hang, you know about the finite-element method?!”
Seeing Hu Qinghe's shocked expression, Zheng Shan and the others were baffled.
They knew every single word of the word 'finite-element', but Zheng Shan had no idea what it meant.
Sun Hang was also a little curious as to why Hu Qinghe had such a huge reaction to the words 'finite-element'.
However, Sun Hang still waved his hand and asked Xu Hongfei to pull a blackboard and put it in the middle of the meeting room.
The next moment, Sun Hang picked up a piece of chalk and came to the blackboard.
Everyone's eyes immediately gathered on him.
Hu Qinghe immediately took out a notebook and a pen, and began to listen to Sun Hang's lecture like a primary school student.
" In mathematics, the finite-element method is a numerical technique for solving boundary value problems of partial differential equations.
When solving the problem, the entire problem region was decomposed, and each sub-region became a simple part. This simple part was called the finite-element method.
It minimized the error function and produced a stable solution through the variation method.
The finite-element method included all possible methods. These methods connected many simple equations on small domains called finite-element methods and used them to estimate complex equations on larger domains.
It regarded the solution domain as composed of many small interconnected subdomains called the finite-element method. For each element, a suitable (simpler) approximate solution was assumed, and then the general satisfaction conditions of the domain (such as the equilibrium conditions of the structure) were derived to obtain the solution of the problem.
This solution was not an exact solution, but an approximate solution, because the actual problem was replaced by a simpler problem. Because most practical problems were difficult to get an accurate solution, the finite-element method not only had high calculation accuracy, but it could also adapt to various complex shapes, so it became an effective engineering analysis method.”
After a pause, Sun Hang continued,
"To put it simply, the finite-element method is to break down a complex problem into small areas that can be easily calculated and analyzed.
After calculating each small area, he would then stack them up to return an approximate value before the decomposition.
The core concept of the finite-element method is actually to solve differential equations…"
The finite-element method was a very common tool in the 21st century.
Simply put, when we draw a circle on the computer, if there is a tool that can infinitely magnify the circle, you will find that the arc of the circle is not an arc, but a small straight line.
When this circle was decomposed into a sufficiently fine grain size, the sum of the distances of these straight lines would be infinitely close to the circumference of the circle.
Of course, the result of the finite-element analysis was only an approximate value. It was enough to provide guidance in reality.
Zheng Shan and the others were naturally confused.
Hu Qinghe, on the other hand, recorded every word Sun Hang said.
At the same time, he nodded as he recorded. It was obvious that what Sun Hang said was very easy for him to grasp.
If someone was close to Zheng Shan, they could hear Hu Qinghe mumbling to himself,"
" If only we had this finite-element analysis tool when we were researching fighter jets…"
" I reckon that our country's fighter jets will soon take a big step forward..."
"What a pity, what a pity…"
Zheng Shan put down his pen and asked in confusion,"
"Since Sun Hang has the analysis tool, why don't you start analyzing it?”
When Sun Hang heard this, a helpless look flashed across his face.
In the past, when he used the finite-element analysis, he had specialized computers and auxiliary software.
However, it was the 1970s, and Sun Hang really didn't know where to find a computer.
And even if he had a computer, he didn't have the corresponding software.
As if he could see the doubt in Sun Hang's heart, Hu Qinghe raised his hand and said,"
"Sun Hang, are you worried that the amount of calculation will be too large…"
" Leave the calculations to me. Even if I bring people to smash the abacus, I will definitely continue with your finite-element method…"
Sun Hang's eyes lit up at Hu Qinghe's reminder.
He was used to using computers, so his mind was filled with how to use computers to calculate the finite-element method.
However, he ignored the abacus that was passed down from the ancestors of the Dragon Country. It was as powerful as a computer.
Before the invention of the computer, the abacus dominated half of the world of computing.
No one in the world, including the overseas, was his match.
It was only after the emergence of computers that the glory of the abacus was gradually buried.
Back then, the Dragon Country relied on the abacus of the seniors of the Dragon Country to forcefully knock out two bombs and one star...
Two bombs and one satellite could be produced with an abacus, let alone an assault rifle!
Zheng Shan didn't understand the concept of the finite-element method, but he knew that it required an abacus.
Zheng Shan waved his hand,"
" Gather everyone in the Red Star Military Factory who is proficient in operating an abacus and form a research team…"
" Project Name: 81-1 Assault Rifle Research and Development Project…"
"Sun Hang will be the chief designer of the project!”
"As Hu Qinghe's deputy, Sun Hang has absolute authority.”
With Zheng Shan's order, the entire Red Star Military Factory began to move like a highly efficient machine…
This book comes from：m.funovel.com。