In the room, after hearing the Kardashian's question, Zhao Guoyang smiled and shook his finger.

"Running stability and running stability are two different things. Running stability refers to the comfort of walking; while running stability focuses on the safety of walking."

"The reason why the parameter of operation stability appears is mainly because the lateral self-excitation vibration problem that trains may occur when running linearly at high speeds. Usually, we call it snake stability."

"The stability of this snake travel not only affects the stability of the train, but also may lead to derailment and endanger operational safety. Therefore, we must focus on analyzing the critical speed of this snake travel..."

Listening to Zhao Guoyang's story, the two senior experts in the studio nodded in agreement.

"Mr. Zhao said so well! The critical speed of this snake is closely related to the train's derailment coefficient. Durant and I are also preparing to talk to Kardashian and the others!" Barrosh said with emotion.

Durant, who was standing by, echoed repeatedly: "Yes, yes, when Mr. Zhao comes, Minister Baros and I are much more relaxed, and we can learn a lot... You can continue to say, let's listen attentively!"

Durant's words are not flattery.

In fact, like Barroche, he focused more on the train's appearance design.

It’s not that he doesn’t understand these theoretical studies, but there is no need to study them carefully.

After all, for a large enterprise such as the "Bombardier Rail Vehicle Design and Manufacturing Group", the division of labor below must be very detailed.

This kind of theoretical analysis must be done by someone.

After hearing Durant's invitation, Zhao Guoyang nodded with a smile and continued to tell some of the technical analysis he knew.

He touched his chin and said, "It is different from ordinary open railway trains. The passing characteristics of subway trains are more complicated. In this case, when we design the train, we must pay attention to the performance of this curve."

Hearing this, Kardashian raised his chest and raised his hand and said, "Mr. Zhao, I know this. Curve passability refers to the possibility that the train will derail when the train passes through the curved road, which produces adverse static and dynamic forces to the tracks and bogies, and the possibility that the train will derail if the wheels and tracks are inappropriate."

Upon hearing this, Zhao Guoyang nodded in praise and said, "What Kardashian said is right, the meaning of curve passing through performance is that. Before we design, there are about three types of curve passing through performance parameters. That is, the outer rail is super high, unbalanced centrifugal force, and the curve speed limit..."

Zhao Guoyang's detailed description directly impressed the three students.

After he talked, Kardashian showed an amazement expression and said, "Mr. Zhao, Teacher Barrowshi really doesn't praise you. Your theoretical level is really impressive."

"Yes, what Kardashian said!" Famal and Tristan also nodded repeatedly and said yes.

Zhao Guoyang seemed very calm. He smiled, opened a rough analysis table on the computer, and said with a smile: "In terms of design, there must be no problem with Mr. Barroche and Mr. Durant."

"Where is my side, I will give you a brief introduction to the dynamic simulation analysis steps of this train. When you assist the two teachers in designing, you can try to substitute these dynamic simulation analysis into it. This is very helpful for improving your actual analysis ability."

After Zhao Guoyang finished saying this, Kardashian, Famal and Tristan looked at me and I looked at you, all of them looked surprised.

On the other hand, Barroche and Durant were also extremely happy, and they just needed to move a stool and sit down as a melon-eating crowd.

Zhao Guoyang "pulled" on the computer, called out a three-dimensional model from the UG three-dimensional program, and then began his own story.

"If you want to do vehicle dynamics simulation analysis, you must first establish a vehicle system mechanical model and its mathematical description. In three-dimensional analysis, we call it 'modeling'!"

Listening to Zhao Guoyang's serious explanation, the three students nodded continuously.

"After the modeling is completed, we need to provide relevant system parameters. These parameters include the vehicle's geometry, mass, suspension parameters, etc."

"The geometric parameters include data such as wheel diameter, bogie wheelbase, bogie center distance;"

When Zhao Guoyang said this, Famal responded: "I understand, Mr. Zhao. Geometric parameters are appearance data. Then this quality parameter is obviously the quality of each component of the vehicle?"

After hearing this, Zhao Guoyang smiled and shook his head: "What you said is not comprehensive enough. In fact, the quality parameters not only include the quality of parts, but also the mass and moment of inertia of components such as motors, car bodies, frames, gear boxes, wheel-to-axle cases. These are not simply weights that can be expressed."

When Famal heard this, he couldn't help but blush.

Indeed, compared with Mr. Zhao's erudition, he was a little overestimated by his rush to speak just now.

Zhao Guoyang smiled and patted his shoulder to show comfort, and then said: "As for the suspension parameters, this is more complicated. It includes the positioning stiffness and suspension stiffness of the first and second systems. It also includes the damping characteristic curves of the first and second systems."

Listening carefully to Zhao Guoyang's analysis, Tristan couldn't help but ask: "Mr. Zhao, then in addition to these three system parameters, are there any other parameters that need to be analyzed?"

Zhao Guoyang said "hmm" and said with certainty: "Of course there are, these other parameters include wheels, various geometric states when the track is in contact, contact point taper, and change curve, etc.."

Hearing this, Kardashian couldn't help but sigh: "Mr. Zhao, there are many steps to simulate and analyze the dynamics of this vehicle. I'm afraid that a few of us alone can't handle it?"

Zhao Guoyang smiled and said, "This is natural! In fact, there is a dedicated person doing the vehicle dynamics simulation analysis in our "Xingtai International".

"Of course, I know that your Bombardier Rail Vehicle Design and Manufacturing Group Co., Ltd. also has the same research unit. However, our Songjiang subway system is inconsistent with your domestic railway system in Canada. It is obviously not appropriate to copy your simulation analysis."

"So, this time I'll invite Mr. Barroche and Mr. Durant, mainly to ask them to help design the train's appearance. As for vehicle dynamics simulation and analysis of these technical things, our people will do their best to help you do it."

Although Zhao Guoyang did not say this clearly, the meaning was undoubtedly very clear, that is, he wanted Kardashian, Famar, Tristan and others to learn from him.

Although Kardashian has big breasts, she is not mindless. After hearing the words of Mr. Zhao, she blushed and nodded: "What Mr. Zhao said is! The specific situation needs to be analyzed in detail. In this regard, the three of us must communicate more with the technical staff of your company and ask them for advice!"

Seeing that she was so sensible, Zhao Guoyang nodded with satisfaction and said, "It's not a question of asking for advice. In short, let's learn from each other!"

Kardashian, Famal and Tristan have admired Zhao Guoyang to the extreme now, so they naturally obeyed him all the words.

After hearing Zhao Guoyang's suggestions, the three of them nodded repeatedly and expressed that they would get along well with the technicians on China.

Seeing that his three students changed their previous arrogance, Barroche could have let go of his worries.

Turning to look at Zhao Guoyang, the technical minister sighed.

Speaking of which, Mr. Zhao seems to be about the same age as his three students, so why are they so evil?

Listening to what he just said, it was clearly a casual way and without any preparation.

This way of doing whatever you want is even more palpitations!

Zhao Guoyang didn't know what Barrosh felt. After teaching the Kardashian and the other three, he smiled and shook hands with Barrosh and Durant and said goodbye.

Looking at his back, Barroche and Durant looked at each other, and they were all filled with emotion.

"Teacher, Mr. Durant, what is the origin of Chairman Zhao? Depending on his age, it seems that he is only twenty-four or twenty-five years old, why do you know so much more than the three of us? Is it earlier than us in China? He graduated from his Ph.D. at the age of twenty-four or twenty-five?" Kardashian asked unwillingly.

"It's not a doctorate! As far as I can tell, this Chairman Zhao is just a bachelor's degree." Barrosh said with a shaking head.

"What? Just a bachelor's degree? How is this possible?" Famal couldn't help but exclaim.

Baroshi glanced at his disciple, shrugged and said, "That's the truth, but I don't know much about the specific situation."

"If you three want to understand the situation in depth, you might as well establish a good relationship with the technicians of Xingtai International, and you may gain something..."

After listening to the teacher's "suggestions", Kardashian, Famal and Tristan all lit up their eyes.

"What the teacher said! Then let's use our affinity for the next period of time to see if we can let these researchers in China tell the story of Chairman Zhao!" Kardashian said confidently.

Famal glanced at her beautiful figure, turned her head and winked at Tristan, all with a playful look on her face.

Noting the expressions of these two classmates, Kardashian pouted and said, "Hey, I'll tell you two of you what are their eyes? Do you doubt my ability?"

After hearing this, Tristan waved his hand and said, "No, Kardashian, you misunderstood. We both think that if you are alone, you will definitely be able to get it. Among the researchers in China, there are young people, and they are full of energy. With you, the beautiful woman, who takes the initiative to chat with him, how can they still be reserved?"

"Yes, yes, Tristan's words came to the point! Everyone knows the charm of our Miss Kardashian. I don't believe it, the researchers of Xingtai International can control it!"
Chapter completed!