The Rise of Heavy Industry 1980

Wang Chaoyang drove, Wang Song and Zhang Lianjun sat in the back row, and returned to Zhang Lianjun's home. At this time, Zhang Miaomiao had already returned home.

After talking about the project of the logistics department, Zhang Miaomiao did not have any objection to participating in the project itself. Even if it wasn't for the equipment of the Red Star Factory, it could be regarded as helping Zhang Lianjun solve trouble.

The only thing that worries Zhang Miaomiao is the content of the project.

The armor-resistant ability of steel plates is a problem that Zhang Miaomiao has never been exposed to before, and she doesn't even know what mathematical model to use to solve it.

"Finite Yuan!" Wang Chaoyang said three words.

"Finite Element?" Zhang Miaomiao nodded thoughtfully, but still hadn't thought clearly. Finite elements are just a theory, and they need to be applied in practical cases and require experience. And Zhang Miaomiao obviously does not have this kind of experience at the moment.

"If you have pen and paper, I'll tell you briefly. Wang Chaoyang said.

Zhang Miaomiao's family naturally has no shortage of paper and pens, the girl quickly went back to the room to get paper and pencils, put them on the coffee table, and Wang Chaoyang immediately told her about it.

If the steel plate is regarded as a piece of cloth and the armor-piercing bullet is equivalent to a needle, then the question becomes how much strength is needed to pierce the cloth with a needle.

"The reason why we use cloth as a metaphor for steel plates is because the first step of the calculation requires the division of meshes, each of which is like a minimum force element, and the warp and weft lines on the cloth are very similar to the grid, and you can imagine that the tip of the needle is piercing the intersection of the grid lines, and then imagine the stress of the rest of the grid lines.

Wang Chaoyang told while drawing a simple picture on paper. Zhang Miaomiao listened carefully and added a few words from time to time.

The last time I got a copy of "Introduction to Finite Elements" from Lou Xinci, after Wang Chaoyang briefly talked about a few chapters, Zhang Miaomiao already had the ability to learn by herself. This girl is the kind of character who is usually soft and glutinous, but treats learning very seriously, and now a thick book of "Introduction to Finite Elements" has been eaten by her for most of it!

In addition to the two people who study finite elements in the room, Wang Song and Zhang Lianjun are also there, and these three elders are also very curious about what the two children study, so they also stood aside and listened at the beginning.

However, as Wang Chaoyang and Zhang Miaomiao gradually deepened the discussion, Wang Song and the others had a feeling of being in a fog, and in the end they could only give up and sit aside to drink tea and chat.

"I can understand every word, but I don't know what it means when I connect them, hehe, I don't know how these two kids did it. Wang Song grinned bitterly.

"Who's to say it's not! But that's good, it shows that the children's knowledge level is higher than that of you and me! It seems that the anti-armor ability project is really promising!" Zhang Lianjun said happily.

Zhang's mother sat aside, not thinking about Zhang Lianjun's project, but thinking about something else. At this moment, Wang Chaoyang and Zhang Miaomiao sat side by side at the coffee table, close to each other, one spoke seriously and the other listened attentively, that kind of alternative "intimacy" look is by no means the performance of ordinary colleagues or friends, and it can be seen that both of them behave very naturally. Especially Zhang Miaomiao, who knows her daughter's character best as a mother, and other boys ...... No matter how good the relationship is, it won't be like this.

So seeing this, Zhang's mother was once again worried about the relationship between the two. It will definitely not work if it goes on like this, I must find another opportunity to talk to Wang Song

......!" The transfer of effects between elements, including stress and strain, either of which exceeds the limits of the material, will cause the material to break. So the most important thing about armor-piercing bullets is the maximum stress value and the maximum strain value, right?" Zhang Miaomiao didn't know her mother's mind at all, and looked up at Wang Chaoyangdao.

"That's right. According to your idea, you can list the calculation formula first. At present, we do not have specific parameters, you can use letters instead. Wang Chaoyang said.

"Good.

Zhang Miaomiao nodded and began to write the equation on the straw paper.

The formula of finite elements is a matrix equation, and the number of matrices is different for different calculation accuracy. A piece of A4 straw paper, Zhang Miaomiao was occupied before she finished writing the formula.

The amount of computation required for finite elements is enormous, as can be seen from the matrix formulation.

Zhang Miaomiao had no choice but to spread the A4 paper on the table, and then continued to write, using up three sheets of paper in a row before finishing the equation.

This is only the first step of the calculation, the subsequent calculation process, the amount of paper occupied will increase dramatically in multiples!

"Factory director, parents, the calculation is finished, come and take a look!" Zhang Miaomiao shouted to the three people drinking tea.

Wang Song and the three of them immediately walked over, and when they saw the three-page formula, they all felt dizzy.

"This is called finite element, although the calculation is very complicated, but the idea of solving the problem is very advanced!" Zhang Miaomiao explained with a red face.

"Good daughter! amazing!" Zhang

Lianjun praised and asked: "Then what are you waiting for, hurry up and calculate, I will report to the leader immediately after calculating the results!" Wang

Chaoyang smiled at this time and said: "Uncle Zhang, you are too anxious, now Miao Miao just lists the equations, and there are no specific parameters that can't be calculated

!" "Oh, look at my brain!" Zhang Lianjun slapped his head and said, "Forget about this stubble." Then Miao Miao, you come with me, I'll take you to the logistics department......

" "I see that your brain is really bad, don't look at what time it is!" Zhang's mother scolded.

Zhang Lianjun looked up at the wall clock, it was already past six o'clock in the evening, and then laughed and said: "I really have this brain! Early tomorrow morning, let's set off again early tomorrow morning!" After

dinner with Zhang Lianjun's family of three, Wang Chaoyang and Wang Song returned to the guest house of Changhai Agricultural Machinery. The equipment problem was a top priority, and Wang Song decided to solve the equipment problem before returning to the factory!

Not long after arriving at the guest house, Chen Xianglong came to the door and told Wang Chaoyang that Ma Sanyuan asked him to come over. Chief Engineer Ma said that the woman who called yesterday called three more times this morning to find Wang Chaoyang, and she was still very anxious to listen to the tone, so she asked Wang Chaoyang to find time to call back.

Wang Chaoyang was even more strange, so he had to come to the first floor of the guest house again and dial back according to the previous phone number, but no one answered after dialing several times.

"Brother Chaoyang, what kind of woman is looking for you?" asked Chen Xianglong.

"I don't know, it's only such a number, but I haven't been able to get ......through," Wang Chaoyang shrugged.

"Isn't it...... Hey!" Chen Xianglong sneered.

"you, don't think about it!" Wang Chaoyang glared, "Forget it, let's fight again tomorrow, I'm too tired today, I'll go back to sleep." "

Okay, Brother Chaoyang, then I'll go back too, and call me at any time if you have something." Chen Xianglong said.