“This is the solar wheel, this is the big planetary wheel.The number of teeth of the solar wheel is 17, the planetary wheel is 80, assuming that the method-directed modulus is 8, the center distance is 388..., we divide the grid according to different accuracy, the non-hydignment area is a little rough, the meshing area is refined, the node displacement matrix is U, and the strain and stress matrix of the finite element are as follows...”

Feng Xiaochen took a stack of blank maintenance registration forms, so he squatted on the ground, skillfully wrote the equation of finite element analysis in the blank on the back of the form, and explained it to Chen Bangpeng while writing back.

In the future, students who study mechanics, finite element analysis is the most basic homework, if you can not write a model of finite element analysis to a machine, you should really doubt whether his graduation certificate is full of charges.Considering that there is no professional finite element analysis software in China, and all the computing processes need to be solved by the analysts' own programming, Feng Xiaochen has greatly simplified the analysis model, simplified the three-dimensional into two-dimensional, and added a number of constraints.

So, the equations he listed are also much more accurate than Chen Bangpeng's calculation model used in the past, and calculated according to such a set of equations, it will be able to effectively solve the problem of mismatches in gear loads.

When Feng Xiaochen wrote these equations, Wang Weilong, Chen Bangpeng and several other technicians came around, and they either squatted or stood, looking intently at Feng Xiaochen's style and symbols.Among these people, except Chen Bangpeng, they are not studying gears, but when it comes to the structure of the frame, the structure of the car box and the other problems, the same need to use this method of stress analysis, so everyone is holding their breath, for fear of disturbing Feng Xiaochen, and desperately digesting the deep meaning contained in these equations written by Feng Zhichen.

"The general analysis framework is like this, specific to the division of the grid, Chen Gong can consider it again."Of course, the better the analysis, but the calculation will also increase geometrically, and I am worried that the computer in your factory will not be able to afford it.And this contact stress equation, Chen Gong can adjust again, I am a foreigner, the setting of the equation may not be very accurate."

Feng Xiaochen finished writing all the equations, stood up, handed a stack of tables to Chen Bangpeng, and said with a slight smile.

“That’s it, hey, it’s great!”

Chen Bangpeng took the stack of paper, looked back and forth, the more he looked at the excitement, what was the unconvincing look on his face.In exchange for ancient customs, he would all intend to worship Feng Xiaochen.

Some of the equations written by Feng Xiaochen are not accurate, such as the concentric conditions of gears and the conditions of overlap, which are very unprofessional in the eyes of Chen Bangpeng, a gear expert.But Chen Bangpeng did not see these things, he is concerned about Feng Xiaochen introduced this set of analytical methods, including how to divide the finite element, how to set the strain matrix, rigidity matrix and so on, these are the places he has not understood before.

Listening to Feng Xiaochen introduced it from beginning to end, Chen Bangpeng has a feeling of sudden realization, the original finite element is such a thing, with his wisdom can completely rely on the gourd painting to create a set of equations in line with the actual situation, used to solve those problems in the gear design.

As for the specific algorithm, it is even more difficult to stop Chen Bangpeng.Luo Fe is a big factory, the first two years have also added several computers, Chen Bangpeng and many people in the technical department have taught themselves the algorithmic syntax of ALGOL60, can skillfully prepare programs, the algorithm on paper into a computer algorithm.

“Great, very good!”Chen Bangpeng said in a loud voice, he turned to look at Feng Xiaochen, there was an embarrassing color, and said: "Feng director, just now ... alas, nothing to say, when I eat a moment, I punished three cups, to Feng Director compensation."

Feng Xiaochen smiled: "Chen Gong's words are heavy, what is not guilty, you are all heroes developed by 120 tons of dump trucks, I worship you too late."Also, don't call me Chief Feng, if you really think of me as a friend, it's like Wang Brother, call me a little Feng."

"This..." Chen Bangpeng looked at Wang Weilong and did not know whether he should listen to Feng Zhichen.

Wang Weilong smiled and said: "Everyone is not polite, Xiao Feng is a well-known enthusiasm in our metallurgical bureau."Everyone remembers Xue Li taking the children to Beijing to see a doctor, Xiao Feng saw that their mother squeezed the bus every day too hard, hard to sell their face to help us borrow a house on the front door.From that moment on, I realized that Xiao Feng was my best little brother.Everyone, like me, took Xiao Feng as his friend and called him Xiao Feng.

He said this, everyone laughed, and went forward to greet Feng Zhichen with affection:

“Little Feng, what a great thing!”

“Son, how many are 20 this year?”Where did you learn this ability, give us all to the town!”

“What is it about our town, even Chen Gong is in town?”Chen Gong, unconvinced!”

“I don’t know, I’m not convinced, I’m wearing it anyway.Alas, you said that Xiao Feng was only in his early 20s, and that he was not a few years older than my boss, and he may be so resistant."

"On the one hand, the most difficult thing is modesty, which is too difficult..."

He turned his head at the people and smiled at himself.At this time, the little Xu and Xiao Guo, who had previously cooked, came running and told everyone that the meal was ready and could be seated.The people gathered around Feng Xiaochen and came to the temporary table, so that he could sit down in the main seat.

It is said that it is a table, in fact, it is just a three-plywood used when transporting the dump truck, and the ore is mated under it, which has become the table where the Luoyu team usually eats.Sitting chairs are real, are the Canvas folding chair brought by the Luoyu team themselves, according to Wang Weilong, these are Luo Ye's own, is to use it when doing field operations.

In order to resist the cold at night at night, the miners of the cold water mine are used to keeping some liquor in the shed.Luo Yu's team went to the countryside, and there were also a lot of white wine, and at this time it was just taken out to welcome Feng Xiaochen.

Wang Weilong is the leader of this dryman, he took the lead in standing up, holding up a glass to toast Feng Xiaochen, and said to everyone: "Everyone knows something?Cold water ore can accept our industrial experiments, all because of Xiao Feng's golden idea.Have you noticed that stone factory over there?That is, Xiao Feng helped build the cold water mine.Without this stone factory, cold water ore is not expected to accept us until now.I propose to raise a toast and express my heartfelt thanks to Xiao Feng!”

“Thanks to Xiao Feng!”

The people raised their glasses together and raised them to Feng Xiaochen.Feng Xiaochen quickly got up, raised his glass high, said a few polite words, and then drank the first drink with everyone.

Then, Wang Weilong also introduced Feng Xiaochen to the Pinghe power plant negotiations, for everyone to buy meat to buy eggs, and just taught everyone to analyze the limited yuan of things, every time you introduce one, you have to propose a drink.When he was able to introduce it, Feng Xiaochen felt that he was about to be put down.

After Wang Weilong sat down, Chen Bangpeng stood up, he also held a glass of wine, and said to Feng Xiaochen: "Teacher Xiao Feng, I don't call you Xiao Feng Director, but I want to honor you as a teacher of Xiao Feng."You just explained the analysis of the limited element to us, it is very good.I have read things many times in the book that I have not understood, and when I listen to you, I understand that you are my teacher Chen Bangpeng.Honestly, I just saw that you are young, you still have some contempt for you, and now prove that I am completely wrong, this glass of wine, you do not have to drink, count me punish compensation, okay?"

"Don't say that, Chen Gong, you make me feel unscrupulous."Feng Xiaochen got up and said, "What teacher is not a teacher, I just accidentally learned a little fur, just in front of everyone to be ugly."120 tons of dump trucks is a large-scale equipment made up by our country's self-reliance, and the masters of Luo Ye are indispensable.So, this drink counts me to everyone, everyone did it together, how?”

Chen Bangpeng patted Feng Xiaochen's shoulder and smiled, "Haha, Xiao Feng is very humble, your little fur can exceed so many of us."If you are so polite, do it together.”

Chen Bangpeng toasted the wine, and others continued to toast, saying nothing more than worship or gratitude.Feng Xiaochen did not dare to drink the bottom of the cup, found some reasons to drink only a small sip at a time, which was not put on the ground.

After the toast ceremony, everyone began to eat.The meat and eggs bought by Feng Xiaochen were used in half, and a large hen weighing four pounds, the table looked very rich.Everyone has been around for weeks, and it is hard to catch an opportunity to open the door, everyone is gorging, and eating is extremely ugly.Feng Xiaochen did not care about everyone to grab food, Nee Wang Weilong directly held him a chicken leg, Chen Bangpeng gave him a full of a large spoonful of red meat, he put the sea bowl in front of him is sharp, he can only follow the big food.

After sweeping the dishes on the table for a seven or eight, everyone re-ended the glass, began to drink and chat on the other side of the three or two, Wang Weilong and Chen Bangpeng sat on both sides of Feng Xiaochen, the object of the conversation was naturally chose Feng Xiaochen.

Chen Bangpeng asked, “Xiao Feng, you just saw our dump truck, you say, how is this car?”

"Very great."Feng Xiaochen responded.

"Is it?"What do you think are great places?”Chen Bangpeng asked.

Feng Xiaochen said: "Under very simple technical conditions, relying mainly on our own strength, we have completed the development of such leading-edge equipment, breaking the long-term dependence on imports of such equipment, regardless of economic benefits, or from the perspective of revitalizing the national spirit, is a remarkable achievement."

Chen Bangpeng laughed and said, "Hahahaha, it was really well received, summed up very highly, and we are all embarrassed."

Feng Xiaochen accompanied a smile, looked at Chen Bangpeng, until Chen Bangpeng stopped laughing, he said slowly:

“But...” (not yet completed.)