pjbooks Chapter 3 If I become rich and powerful, let us not forget each other.
Chapter 3 If I become rich and powerful, let us not forget each other.
Li Hongde picked up the chalk and quickly drew a simplified diagram of a complex gear transmission structure in the corner of the blackboard, and wrote down a long series of mechanical formulas and boundary conditions next to it.
"This is a topic I've been researching recently: the dynamic response analysis of gear meshing systems at high speeds."
"This involves the coupling problem between nonlinear vibration and calculus. Currently, I have encountered some bottlenecks in the handling of boundary conditions." Li Hongde put down the chalk, turned around, and looked intently at Lu Feng.
"If you can provide an effective mathematical model analysis approach, or propose a feasible mechanical correction scheme, these three absences will be wiped clean."
It would be almost impossible for a freshman to answer this question.
However, science and engineering fields rely on talent, and Li Hongde was betting on whether Lu Feng had that kind of talent.
He and his students had been researching this topic for a long time, but they hadn't been able to find a solution. Lu Feng could still answer his questions in class even when he was sleeping or skipping class, so Lu Feng might have a talent for this.
As long as Lu Feng has an idea, even if it's inaccurate but close, he can still find it.
Throughout history, talented horses have been common, but discerning judges of horses are rare.
Although he was very strict in class, it was mostly out of disappointment and frustration with students who didn't pay attention.
There's a reason why Li Hongde became one of the most outstanding teachers at the University of Hong Kong.
Lu Feng glanced at the diagrams on the blackboard and got a general idea of what was going on.
This problem was a major challenge in 12. As the rotational speed increased, nonlinear resonance would occur, and then the noise would completely get out of control, directly disrupting the stability of the entire transmission.
However, in 2026, various types of electric vehicles were flourishing. High-speed gear meshing systems were mostly used in gearboxes, reducers, and electric drive axles. This difficulty had already been overcome. At that time, Lu Feng studied a lot of knowledge in this area in order to get promoted.
He stepped forward and picked up the chalk.
As he began writing on the blackboard, Lu Feng felt a strange sensation envelop his entire body.
This feeling was very special, as if he had established an invisible connection with the problem, making every derivation of the formula and every leap of thought seem natural.
"Teacher, I think the bottleneck you encountered in the boundary conditions is because you ignored the nonlinear effect of the shear stress of the lubricating oil film on the damping characteristics."
Lu Feng spoke as he wrote.
His voice wasn't loud, but every word seemed to carry a special feeling, striking straight to the heart.
Li Hongde initially only intended to see if the student had any potential, but as Lu Feng's explanation went deeper, his expression gradually changed.
Lu Feng's thinking was too smooth. He did not simply copy the rigid theories in the textbook, but perfectly combined theory with actual working conditions.
Every correction parameter he mentioned precisely addressed the pain points that Li Hongde had previously encountered when analyzing the model. He spent a lot of time trying to deduce them, but basically to no avail.
Lu Feng didn't give Li Hongde much time to think and continued speaking.
"...Here, we introduce a variable stiffness function and combine it with Hertzian contact theory to simplify the nonlinear vibration equation into an approximate linear differential equation, thereby reducing computational complexity and improving solution accuracy."
Lu Feng stopped using the chalk and drew a simple curve on the blackboard.
Li Hongde stared at the function curve, as if frozen in place. He didn't know why Lu Feng's words were so infectious; they were so captivating that he could immerse himself in them and think deeply.
In fact, this is precisely the effect of the "infection" entry working silently.
Li Hongde's mind kept replaying Lu Feng's thoughts, and what Lu Feng said was undoubtedly the biggest limitation he was facing.
"Wonderful... wonderful." Li Hongde murmured to himself, pushing up his glasses.
"Using a variable stiffness function to handle lubrication damping—how come I never thought of that?"
Lu Feng put down the chalk and turned to Li Hongde: "These are just some superficial ideas I've summarized based on some articles I've read. I don't know if they will be helpful to your research, teacher."
Li Hongde took a deep breath. He seemed not to have heard what Lu Feng said and continued to carefully examine the deduction process left by Lu Feng, remaining silent for a long time.
A few minutes later, Li Hongde finally snapped out of his thoughts. Seeing Lu Feng looking at him with curiosity, he blushed. He hadn't expected that a freshman's thinking would take him so long to analyze.
He then coughed to ease the awkwardness, and his tone suddenly became serious: "Lu Feng, would you be interested in joining my research group?"
"Your thinking and ideas just now have shown me your potential, and I want to mentor you."
Lu Feng's heart skipped a beat.
He knew this was exactly what he wanted.
As a Double First-Class University, Hong Kong City University is quite strong in scientific research. In recent years, it has produced many outstanding students who are doing very well in various industries.
In this university, joining a professor's research group is the only shortcut to accessing resources and core technologies.
However, most freshmen are not eligible because they lack understanding of their major and haven't taken many professional courses, so professors are actually unwilling to mentor them.
It would be foolish not to take advantage of this opportunity.
"Teacher, I'm willing." Lu Feng said without the slightest hesitation.
Li Hongde looked at him, a hint of approval flashing in his eyes: "However, the research here is extremely difficult, so you should be mentally prepared."
"I'm not afraid of hardship as long as I can learn something," Lu Feng replied resolutely.
"Good, that's bold!" Li Hongde patted him on the shoulder.
"Come to room 302 of the laboratory building tomorrow morning. I will give you specific tasks then."
"no problem."
Lu Feng turned and walked out of the lecture hall.
Outside the classroom, the sunlight in the corridor was a bit too bright.
Zhang Wei was leaning against the wall, kicking the corner of the wall out of boredom.
Seeing Lu Feng come out, he immediately went up to him and asked with a curious look, "Old Lu, how did it go? Did the King of Hell do anything to you?"
Lu Feng smiled and patted Zhang Wei on the shoulder: "No, he talked to me about some scientific research matters."
"Scientific research?" Zhang Wei's eyes widened, as if he had heard something unbelievable.
"You? Scientific research? Lao Lu, are you kidding me? Were you still half asleep?"
"Li Hongde asked me to join his research group." Lu Feng said calmly, as if he were talking about a trivial matter.
Zhang Wei was stunned. He opened his mouth wide and couldn't close it for a long time.
Several seconds passed before he suddenly realized what he meant, his voice rising abruptly: "Holy crap?! Li Hongde's research group? Lao Lu, are you out of your mind? That's our college's top group! Only the best juniors and seniors are qualified to get in! They say they work on provincial-level key projects, extremely difficult, and countless people would kill to get in!"
Lu Feng raised an eyebrow, his tone indifferent: "Is that so?"
Zhang Wei exaggeratedly gestured, "That's more than that. You don't know, there was a senior from the previous year who came out after only two days. He said the intensity in there is extremely high. I think you'd break your defenses if you went."
Lu Feng chuckled: "Then let's give it a try. I'm confident."
Looking at Lu Feng's nonchalant demeanor, Zhang Wei felt a sudden toothache.
Zhang Wei chuckled, put his arm around Lu Feng's shoulder, and said, "If you become rich and powerful, don't forget me! When you become a big shot, don't forget to take me under your wing!"
"Okay, okay."
The two joked as they walked out of the teaching building.
As he approached the entrance of the teaching building, Lu Feng stopped and looked at the library, which was nestled among red bricks in the distance.
The current learning value is too low. We need to raise it as soon as possible. This high-tech blueprint and the summoning of powerful figures are really tantalizing.
The University of Hong Kong Library has a vast collection of books for studying; you can't go wrong with it.
Seeing that Lu Feng hadn't moved, Zhang Wei asked in confusion, "Aren't you going back to the dorm? Didn't we agree to go back and play Three Kingdoms Kill?"
"No, I'm going to the library to look up some information." Lu Feng shook his head, his gaze resolute.
"Since I promised to go to the lab tomorrow, I need to brush up on my basics first. There are many things that can't be learned just from theory."
Watching Lu Feng turn and leave, Zhang Wei scratched his head and muttered, "That kid has really changed his ways today."