Huayu for engineering students

Chapter 255 The Surprise of the New Car

"What's the noise outside? There are many people." Wang Xu's eyes were covered with a piece of red cloth.

"Guess?" Wang Fei's voice was still so nice, cold and sexy.

"That day you covered my eyes and the sky with a piece of red cloth. You asked me what I saw? I said, I saw happiness." Wang Xu sang deeply.

"Showing treasure!" Wang Fei said with a half-smile, holding Wang Xu's red cloth tighter.

"Here we come, here comes my surprise." Wang Xu continued to play tricks.

He was really excited. Although he knew that Wang Fei must have bought him a car, he had no idea what it was because he had hardly talked about cars with Wang Fei.

Well, that's not right, Wang Xu and Wang Fei once thoroughly complained about all the existing cars, and the conclusion they came to was one word, ugly.

It's not so ugly, it's just that ugly, anyway, there is nothing he can fancy.

Do you think that in an era when Santana can be called beautiful, what else can Wang Xu look up to?
In fact, this is also related to the development of industry, but the core that restricts the development of automobile styling is not the automobile industry itself, but the computer industry.

The shape of the car is formed by wrapping the body with iron sheets outside the body, and both the body and the outer skin are welded by the iron sheets, and these iron sheets are punched out by a stamping machine.

This makes it necessary to make a mold first before building a car.

Before the birth of three-dimensional modeling design, how did people build cars?
First build a one-to-one scale model of a car with clay, then use a wooden soft ruler to draw it with a very fine grid contour line, and then input it into the computer to form a three-dimensional model, which is for subsequent digital processing Prepared.

Then turn the glass fiber reinforced plastic mold on the clay model, then repair the mold, then turn over the plaster mold, then repair the mold, then turn over the sand mold, and then repair the mold, three consecutive steps of turning over the mold and repairing the mold, then you can get a mold that can pour molten steel mold.

After that, high-quality alloy mold steel molten steel can be poured, and then forging is required to increase the strength, and then digitally programmed cutting.

The programming process is very complicated and cumbersome, and since the wooden soft ruler cannot be bent too much, it is required that the curvature of all the surfaces of the entire car should not be too small, and the shape should not be too complicated.

The body is more troublesome, not only to design the shape, but also to consider various forces such as load-bearing, impact, twisting, bending, etc., which requires the use of computers for very complicated force analysis and calculation.

After that, it must be produced according to the previous steps, and then various experiments are repeated. Once the test fails, it has to be improved and the previous process is repeated.The design cycle of a car takes several years, and the time is basically spent here.

Therefore, from the design draft to the final mass production of a car, it takes years and billions of money.

A complete set of automobile body stamping dies costs hundreds of millions of dollars.

In this era, a model is often used for several years or more without being easily replaced, and a car company will not produce many different models. The high design cost and mold cost are the most important reasons.

Later, with the continuous improvement of [-]D computer design software, the vehicle model can be modeled directly in the computer, and then automatically programmed to automatically perform various force analysis, stiffness analysis, torsion analysis, and collision analysis.

Afterwards, it is directly disassembled into various parts in the computer, and then the data required for the mold can be quickly established, and even the mold processing program can be written automatically.

Even some extreme car manufacturers have directly abandoned the manufacture of clay models, and all of them are completed on computers.

This makes complex body shapes possible, directly reducing tooling and design costs by an order of magnitude.

The new, ornate, or weird shapes seen all over the streets in later generations are actually thanks to the advancement of computers.

Liu Da said in "The Three-Body Problem": "Destroying you has nothing to do with you."

It is not the car factory that overturned the entire auto industry.During this process, many companies that embraced computer-aided design and manufacturing slowly died inexplicably.

Readers of later generations must feel that this process is a bit familiar. Yes, this subversive process has been carried out again in the electric vehicle market. Perhaps we will witness the decline of some car companies that failed to transform in time.

Wang Fei held Wang Xu's hand, and Wang Xu pretended to follow behind.

Wang Fei's hands were warm and soft. Wang Xu, who was blindfolded, focused on his hands, but felt more and more comfortable.

After going down three floors and walking out the back door of the small building, Wang Xu could hear all kinds of admiration from all around him, as well as all kinds of stopping voices from the surrounding crowd.

Obviously, the place is already full of spectators. It is estimated that the people in the whole small building have run out.

"Whoa, whoosh, boo!"

The voice was chaotic and noisy, but when Wang Xu walked out of the small building, it slowly quieted down.

Wang Fei's footsteps are cheerful, but she always pays attention to the feet of Wang Xu who is holding her hand, and walks carefully, for fear of accidentally falling on him.

Wang Xu's footsteps were steady. He could have walked faster, but he was afraid of spoiling Wang Fei's interest.

Soon, Wang Xu knew that he had reached the center of the small square. Wang Fei stood still, but she didn't take off Wang Xu's blindfold immediately. Instead, she gently hugged him and gave him a long hug. hug.

Wang Xu also hugged the girl gently, letting the red cloth continue to blind his eyes, feeling the girl's sincerity with his heart.

For a long time, maybe soon, Wang Fei reluctantly let go of Wang Xu, gently kissed Wang Xu's exposed chin, then rubbed against Wang Xu's chest, and then reached out to help Wang Xu untie the mask. The red cloth covering his eyes let the spring sunshine shine into Wang Xu's eyes.

After Wang Xu got used to it, he saw an exquisite artwork parked quietly in the center of the small square.

The orange body, exaggerated headlights, graceful light lines, flat front, every detail shows the taste of this work of art to Wang Xu.

Porsche, Wang Xu recognized this somewhat low-key sports car brand almost immediately.

He said he didn't want to guess, but knowing that Wang Fei was going to give him a car, how could he resist guessing.

He guessed that Wang Fei would buy her a sports car, and he guessed that Wang Fei would buy him big toys for him. The three big toy brands in China in this era are still the things in the pictures.

Red Ferrari, yellow Lamborghini, both cars have extremely bright colors.

Therefore, no matter Xiangjiang or Wanwan, these two cars are the favorites of the second-generation young people who love to show off.

The relatively low-key Porsche is often the favorite of middle-aged sullen men. Wang Fei clearly grasps the mentality of Wang Xu, an old man who is immature in appearance but sullen in heart.

Excitedly, Wang Xu dragged Wang Fei around the car several times in a row, checking repeatedly, before he really understood what the car was.

Wang Xu was really shocked, and Wang Fei really gave him a huge surprise.Because this car is not a common 911 on the market at all, not even a 911 turbo, this is a 964, a limited edition 964, not a low-key 964 at all.

(It’s too late, so I won’t introduce it, if you know about it, you can post a picture)
"Oh, haha, wife, I love you." Wang Xu cheered, not knowing whether to call someone or a car.

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(See you tomorrow)

(End of this chapter)