All round car designer

Chapter 34 Frame Design
In the end, Chen Yunru accepted Zhou Fei's proposal because she really liked this song so much.

Zhou Fei pointed to the guitar behind her, "Let me accompany you."

"You can also play the guitar?" Chen Yunru asked in surprise.Now she thinks that Zhou Fei is amazing, he can drift, write songs, and play the guitar!

Is there anything he won't do?
"A little bit." Zhou Fei took the guitar from Chen Yunru with a smile, and then stood there and began to tune it. He hadn't touched the guitar for a long time, and he himself had only learned half of it, so his technique would inevitably become unfamiliar.

And Chen Yunru held the piece of paper, where she was familiar with the lyrics and the melody of the song.

"I'm ready."

About 3 minutes later, Chen Yunru looked at Zhou Fei again and said with a smile.

Zhou Fei also made an OK gesture to her, then sat on the ground like this, holding the guitar in both hands, and started his own accompaniment.

Hey~
As Zhou Fei's fingertips touched the strings, the melodious prelude began to sound slowly in the night, and Chen Yunru also took a deep breath, her eyes fixed on the lyrics in her hand, and her lips parted.

The brightest star in the night sky~
can you hear me~
Those who look up~
The loneliness and sigh in my heart~
…………

I have to say that Chen Yunru's voice is very recognizable. Although Zhou Fei doesn't understand music appreciation, he can intuitively feel that Chen Yunru sings very well.

I thought that Chen Yunru could not control this type of song, but now it seems that Zhou Fei's worries are completely unnecessary. Chen Yunru not only can control it, but also control it very well!
Her special singing voice and magnetic voice immediately expressed the core of the song.

Although Zhou Fei always believes that the version of the escape plan is the most perfect version of this song, this cannot conceal the fact that Chen Yunru also sings very well.

At the beginning, Chen Yunru seemed a little nervous, after all, this was the first time she sang for a boy alone, but as time went on, her mentality became more stable, and naturally her singing became better and better.

Whenever I can't find the meaning of existence~
Whenever I get lost in the dark~
The brightest star in the night sky~
Please light me up~
…………

Completion.

Zhou Fei even forgot to stand up. He never thought that he would be able to hear such a beautiful "The Brightest Star in the Night Sky" in this world!
A few seconds later, Zhou Fei hugged the guitar like this, and clapped vigorously, "It's really nice to sing!"

Chen Yunru was a little embarrassed by his praise, "I sang this song for the first time, and I didn't grasp many places well enough. You are the original creator of this song, why don't you sing it to me?"

"You want me to sing?" Zhou Fei smiled awkwardly, "Forget it, I'm typically tone deaf."

Chen Yunru didn't insist anymore, it was probably because Zhou Fei was embarrassed.

Probably because she was tired from standing, Chen Yunru simply sat beside Zhou Fei, looking at Zhou Fei from the corner of her eye, "If you really have a talent for songwriting, why don't you consider developing it? As a professional Composer, isn’t it pretty good too?”

Zhou Fei smiled, "Didn't I say that my goal is only cars. Of course, since you like singing, I don't mind including songwriting in my goal."

Still as straightforward as ever.

However, Chen Yunru seemed to enjoy this feeling very much.

"Will you participate in this year's Campus Singer Competition?" Zhou Fei asked suddenly.

Chen Yunru tilted her head and thought about it seriously, "It should be. After all, I have missed it for three years. If I don't participate, I will never have another chance."

"Then I'll continue writing songs for you."

"Okay."

With the bright moon in the sky and the evening breeze blowing, Zhou Feimeng suddenly remembered a very literary saying:
There were sixpence everywhere, but he looked up and saw the moon.

Although it is not appropriate to use it at this time, Zhou Fei always feels that the girl sitting next to him is his moon.

***
Love between children is just the seasoning of life, and Zhou Fei's main theme is still cars.

The design work of the racing car has come to the final step, which is the structural design of the frame.The design of the frame should not only take into account the overall structure of the car, but also take into account the size and structure of the suspension, brakes and other components.

In other words, this is a two-way design process. It is necessary to determine the structure of the frame according to the structure of the suspension and other components, and at the same time to further determine the size of the suspension and so on according to the size of the frame.

Among them, a lot of calculations and dynamic simulation processes will be involved. Zhou Fei intends to hand over this part to Jiang Yang. He only needs to determine the specific structure of the frame.

Although with the popularity of the load-bearing body, the frame has rarely appeared on passenger cars, but due to the particularity of the racing car, the frame is still an irreplaceable part, and the truss frame is the design of the racing car. The most commonly used form of frame.

The traditional truss frame is mainly welded with steel pipes. Its characteristics of high rigidity and low mass perfectly meet the characteristics of racing cars. Almost all formula cars use this type of frame.

However, in terms of frame materials, steel pipes are not Zhou Fei’s only choice, because Zhou Fei is aiming at better materials than steel pipes: aluminum alloy pipes, or even carbon fiber pipes!
Many teams choose to use steel pipes when designing the frame, mainly because of funding issues, and secondly, welding issues must also be considered.

So far, none of the dozens of college student teams across the country has tried to use carbon fiber materials on the frame, and Zhou Fei wants to be the first to try!

Of course, if the entire frame is made of carbon fiber materials, 20 yuan is definitely not enough, and the connection of carbon fibers must also be considered, so Zhou Fei's idea is to only use the front bulkhead and the main ring and other important parts. Carbon fiber is used, and steel pipe or aluminum alloy pipe is still used in the rest of the place.

If you want to make a trade-off between light weight and economy, Zhou Fei needs to make a comprehensive evaluation of the design of the entire car.

After carefully referring to the typical designs of previous classic racing cars in the system, Zhou Fei finally determined the structural form of the frame according to the current design of the racing car.

Monocoque + Subframe!
This is the frame form chosen by Zhou Fei, which perfectly matches the design of the current mainstream F1 racing cars.Of course, the monocoque that Zhou Fei needs cannot be compared with the monocoque of an F1 racing car, after all, there is a world of difference in the intensity of competition between the two.

After determining the form of the frame, the rest is the design work.

Originally thought that the design of the frame was not difficult, but after doing it himself, Zhou Fei found that he was thinking too much, because all the dimensions have to be determined according to the specific situation, and cannot be imagined out of thin air. In addition to being theoretically consistent, Actual measurements are also required.

Not only is it tedious, it's boring.

Zhou Fei spent two days, but he didn't come up with any results.

Fortunately, on the third day, Jiang Yang, who had finished the Qingbei University summer camp, rushed back from Yanjing. Zhou Fei immediately left this job to him and became the shopkeeper himself.

Measurements, calculations, and dynamic simulations are just like everyday food for a top student like Jiang Yang, and they are nothing at all.

With Jiang Yang's help, the design progress of the frame quickly accelerated. In just five days, two people basically determined all the dimensions of the frame!
(End of this chapter)