Chapter 826

How to reduce the material cost of the dome has become the biggest headache for Chen Xin and the whole design team.

The original structure of the dome was mainly composed of high-performance light steel as the main structural support, EFTE airbag and support structure, and the outer layer was covered with thermal insulation materials.

Obviously, there is nothing to adjust and modify the outer thermal insulation layer and EFTE airbag. When Chen Xin first designed the dome, he has done enough optimization for these two layers, and the structure and materials are the optimal solution.

So it's the same sentence. Unless you change the materials, there's nothing to adjust.

Changing materials... Not to mention how troublesome the research and development of a new material is, even if Chen Xin can produce a new material through the system, there is still a long distance between the invention of a material in the laboratory and large-scale industrial production.

We should study the production process, develop production equipment, establish factories and formulate process flow

It can be said that a new material can be turned from a laboratory into an industrial product that can be mass produced in three to five years or more.

This is why Chen Xin did not upgrade the dome materials through the system.

Replacing a new material can indeed meet all requirements, but corresponding to it, a new set of new material production line needs to be established.

Even if Chen Xin transforms the old production line into a production line of new materials by means of system upgrading, it is still not a small project. After all, Chen Xin can only solve the problems of production equipment, such as production process, process flow and process parameters. He has no way to solve them and still depends on other researchers to explore.

Although the problem of production equipment is the most troublesome and difficult problem in the application of new materials.

Therefore, although the development of a new material can solve all problems and meet the requirements put forward by the senior management, Chen Xinhe and the whole design team only take this scheme as an alternative. In addition to allowing researchers to speed up the research progress in this field, they still put more hope on how to replace high-performance light steel with existing cheap materials.

"The steel we use now is a special light material. If ordinary steel or light aluminum is used, the cost is only one third of that of this material, which can be said to be the best solution at present." in the conference room, a researcher is saying: "However, if ordinary steel is used, even if the dome is built according to the existing structure, the self weight of the dome will be increased by at least four times. Light aluminum can reduce this proportion to twice, but it still exceeds the safe bearing range of the supporting structure of the dome in the original design scheme."

Using ordinary steel or light aluminum can effectively reduce the cost, but because the weight of ordinary steel and light aluminum is still heavier than the original high-performance light steel, the weight of the dome will increase a lot.

It's not that the supporting structure can't bear it, but the heavy weight undoubtedly increases the risk of dome collapse.

After all, this is a large dome shrouded in a city. All the weight is borne by the supporting structure itself. If the weight is too heavy, it will undoubtedly cause a great burden on the whole structure.

"What about strengthening the supporting structure?" someone suggested.

"Not very good. Strengthening the supporting structure also means increasing the weight. It's better to add supporting columns." someone on one side denied the proposal.

"It's feasible to add supporting columns, but in that case, we have to build tall buildings in the city and put the supporting points on the roof." a designer pressed twice on the table and projected the design drawing and three-dimensional projection of the dome in front of the people. He adjusted the design drawing, showed the columns on it, and then continued: "In this way, the structure and strength of the dome can be guaranteed, but these high-rise buildings as support points have become a problem."

The designer didn't say what the problem was, but everyone participating in the meeting understood what he meant, because if a tall building wants to be high, it can't be too heavy.

But this contradicts the load-bearing. After all, these high-rise buildings should be used as the supporting columns of the whole dome. If they can't bear the load, it's meaningless.

"How many solid cement columns?" some people obviously don't give up on this. Since it's impossible to build a high-rise building, they just pour several solid reinforced concrete support columns. If they don't believe it, they can't support it.

"In that case, reducing the cost is meaningless." the designer calculated the project cost and showed it, which immediately made everyone at the meeting shake their heads.

Pouring reinforced concrete pillars is not just using steel bars to build shelves, and then pouring cement into them. If you want to build a reinforced concrete pillar as big as a tall building, it will not be cheaper than building several tall buildings.

Faced with such a result, everyone was silent for a moment.

Obviously, although the solutions they can come up with now are not without solutions that can solve the problem, none of these solutions have shortcomings.

It seems impossible to find a perfect solution to the problem and meet all the requirements at the same time.

Just when people were thinking about whether they were using alternative schemes and replacing new high-strength steel with new materials, some people tentatively said, "do you want to use foam metal?"

"Bubble metal? Is it not strong enough?" people questioned about what foam metals are.

The so-called foam metal is a kind of material obtained through special processing, so that metallic materials contain foam pores.

This material is one of the new materials before the disaster. It has good air permeability and small density, and has certain strength, ductility and additivity. It can be used as lightweight structural materials.

This material has been used in the core of aircraft clamping devices for a long time. In the aerospace and missile industries, foam metal is used as a lightweight and heat transfer supporting structure.

Because it can be welded, glued or electroplated to the structure, it can also be made into sandwich bearing members.

"It sounds feasible. Is there any information on this?" hearing this suggestion, Chen Xin thought it seemed feasible, but he didn't understand this material.

The people who put forward the proposal quickly adjusted the foam metal related data and sent them to everyone.

Looking at the materials related to foam metal materials projected in front of him, Chen Xin felt that this material seemed to meet their needs.

Then he thought, "it seems that foam metals can be considered, so we can assess the feasibility of this material. If we can use it, we should come up with a plan as soon as possible."

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