King of Industry

It was Zhao Guoyang's first visit to the technical department of Jinling Automobile Group Corporation.

Following Wang Ziqing into the large office of the technical department, Zhao Guoyang immediately attracted everyone's attention.

Hey, who is that young man? He seems to have a good relationship with the chairman! A new employee in the technical department couldn't help but whispered to the old employee next to him.

Well, I haven't seen this person before, maybe he's new here? The old employee who was asked scratched the natural curl on his head and said with a blank expression.

Come on, Lao Jia, which new employee have you met, was sent by the chairman himself? Another senior employee with thin lips curled his lips.

Damn, who do you think Old Geng is? Natural Juan asked with an expression of dissatisfaction.

The senior employee with thin lips smacked his mouth and said, In my opinion, this must be the chairman's new secretary. Let him come over to familiarize himself with the situation!

Tch, return the secretary! Ziran said with disdain on his face, Which secretary have you ever met, old Geng, who can walk side by side with the boss?

Being stalked by natural volume, the senior staff with thin lips were a little unconvinced.

Just as he was about to make a distinction, he saw Lu Zhixing, the vice-chairman who had heard the news, greet him from his minister's office with a smile, and then firmly held the young man's hand.

Seeing this scene, Natural Roll also forgot to argue with Thin Lips, and stood on the spot in a daze, with an expression of disbelief on his face.

The office of the technical department and the minister's office are connected, with only a transparent glass in between.

After Lu Zhixing came out to meet Wang Ziqing and Zhao Guoyang with Xia Qingshan, director of the technical department, and others, he invited them in for a detailed discussion.

After entering the office and asking the chairman and Zhao Guoyang to take their seats, Lu Zhixing couldn't help but said, Researcher Zhao, we are looking forward to the stars and the moon, and we finally have you here.

Yesterday, when Chairman Wang told me that he wanted to invite an expert to come over and analyze it for us, I guessed that it was you in all likelihood. I saw it today, and it turned out to be true!

Wang Ziqing couldn't help saying happily when he heard the words: Yo, I didn't expect that Mr. Lu still has the ability to predict the future. It's amazing!

After listening to Chairman Wang's ridicule, several people in the office all smiled.

After exchanging pleasantries, Wang Ziqing explained Zhao Guoyang's intention to come.

Comrades, everyone must have a good idea of ​​the reason for inviting Researcher Zhao to come here today despite his busy schedule. It's just a word - to improve the body design of our passenger car.

Everyone should know the level of Researcher Zhao, so I won't say much. If you have any questions, take this opportunity to ask them quickly. After today, we don't know when we will be able to invite him next time!

After Wang Ziqing finished speaking, Lu Zhixing's expression changed.

He waved his hand, and hurriedly said to Xia Qingshan who was next: Qingshan, hurry up, tell Researcher Zhao about the issue we just discussed...

Xia Qingshan said hmm, took a stack of printed drawings from his deputy, and put them on the coffee table where everyone was sitting.

Picking out one of them, Minister Xia politely asked Zhao Guoyang, Researcher Zhao, you should already know the situation.

Now the appearance of our new model Iveco has definitely reached the domestic first-class level, but the body designed according to this appearance always seems to be somewhat lacking.

Xia Qingshan pointed to the largest picture, and asked puzzledly: Researcher Zhao, please take a look. This is the anatomical drawing of the 'Ziyi' car body imported from Apennines, for comparison with our Iveco.

No matter how you look at it, we feel that we are a bit lower than others. We really don't understand the reason...

A deputy director of the technology department named Chen Qian also chimed in: Yes, researcher Zhao, in order to understand this, our company specially purchased a newest model of 'Deyi' for comparison and analysis, but it always To no avail...

Zhao Guoyang gave a hmm, took the anatomy diagram from Xia Qingshan's hand, and read it carefully first.

After a while, he almost figured out what was going on.

Putting the blueprint aside with a calm expression, Zhao Guoyang leaned forward slightly and said, Minister Xia, I have already seen the blueprint, and I can roughly guess why Mr. Wang, Mr. Lu and everyone think our Iveco body is awkward. gone.

Hearing that Zhao Guoyang found the problem so quickly, the eyes of a group of people lit up instantly.

Lu Zhixing was the most impatient, and couldn't help but took Zhao Guoyang's hand and asked, Researcher Zhao, what's going on? What's wrong with the body design of our factory?

Zhao Guoyang didn't show off, he said calmly: Before answering your question, Mr. Lu, let me give you a brief explanation...

Seeing everyone looking at him eagerly, Zhao Guoyang stretched out a finger and said, In international vehicle design, there is a rule for body design.

That is, before designing the body, we must first clarify the overall load-bearing form of the body and make a load analysis on it.

Looking at Xia Qingshan and his two assistants looking slightly confused, Zhao Guoyang explained with a smile: I know Minister Xia, you may find it strange that our Iveco is a passenger car. A sedan is about the same, it's not as complicated as a minivan.

However, all of us may have forgotten one thing. Our car has seven seats and eleven seats. Their partial load division is definitely different from that of ordinary cars. It is different from trucks and trucks. Even more so.”

It is obviously inappropriate to design the body according to the calculation methods of ordinary cars, vans or trucks.

Hearing this, Xia Qingshan and his two lieutenants looked at each other, and they were both stunned.

Indeed, after they got Zhao Guoyang's exterior design concept drawing, they immediately started designing the body based on past experience.

Although it took only a short time for them to design the body of this passenger car, they ignored an important key.

Now that Zhao Guoyang explained it this way, Xia Qingshan, Chen Qian, and Feng Shanwei's faces were a little hot. The problem of relationship came from the very beginning of the body design.

Zhao Guoyang didn't care about the embarrassment on the faces of the technology giants, and continued to explain: Then, let's use this picture as an example.

Our Iveco, because the local load analysis is not done properly, everyone will find that the structural form and connection method of each beam seems to be a little bit less meaningful than proud.

Zhao Guoyang pointed to the Deyi site reinforcement beam on the blueprint: For example, here, the 'Deyi' car has been welded with two ribs, which immediately makes the entire body structure fuller and looks stronger. This is the advantage brought by the local load analysis in place...

After listening to Zhao Guoyang's narration, Lu Zhixing couldn't help but sigh with emotion: It's really 'listening to your words is better than reading ten years of books'!

Researcher Zhao's analysis seems to have opened a window for us in an instant, making us feel suddenly enlightened!

Xia Qingshan nodded again and again and said in agreement: Yes, Researcher Zhao, after your explanation, our thinking is really much clearer.

However, we still have to ask you a thing or two about the body design and body load analysis...

Zhao Guoyang smiled and waved his hands: Hey, Minister Xia, you are too polite, this is what I should do.

After a few words of humility, Zhao Guoyang began to explain: Because of cost and economical reasons, when we design the body structure, we should first take the light weight of the structure as the criterion, and strive to achieve a reasonable strength distribution on the body as a whole. sex.

After determining the main load form of the body and understanding the load transfer method, we can choose a reasonable calculation method.

Zhao Guoyang pointed to the two cars on the drawings and said: Because our car is a passenger car, according to the characteristics of passenger cars, we can use bending, torsion and collision as three typical loads on the body during design. Let’s analyze it in detail.”

Having said that, Zhao Guoyang paused, looked around, his eyes fell on the computer in the middle of the office and said: Mr. Xia, your computer should have the previously designed body structure diagram on it? This Iveco will probably be changed, and its body structure will be improved...

Yes, yes! After hearing this, Xia Qingshan couldn't help but trot over to turn on the computer, and led Zhao Guoyang to sit in front of the computer.

Wang Ziqing and Lu Zhixing didn't dare to neglect, they stood up almost at the same time and followed.

Seeing this, Chen Qian and Feng Shanwei rushed to help the two big men move the chairs over, and asked them to sit on both sides of Zhao Guoyang.

Seeing the familiar interface of the CAD program in front of him, Zhao Guoyang made quick gestures while explaining his thinking to everyone.

According to the structural characteristics of passenger cars, when we design, we can regard it as a frame structure composed of thin-walled beams and thin plates.

When it is assumed that the force acts on the nodes of the structure and is symmetrically distributed, after properly simplifying the force on the nodes, we can sequentially establish a mechanical model for the body to withstand bending loads and torsional loads.

When Zhao Guoyang spoke, the speed of his hands did not slow down at all, and he started to build a model.

After a while, Zhao Guoyang had built the model, and then continued to explain: Using this model, we can use general mechanics methods to calculate the load distribution and deformation diagram of the entire car body...