Chapter 613

Although Chen Xin was studying and improving the emergency survival capsule, when he took apart the emergency survival capsule, he saw the possibility of improving the dome design from the grid structure formed by the hardening of non Newtonian fluid material.

Although these two things seem to be totally different at first glance, they have something in common.

The grid structure adopted by the emergency survival module is a complete sphere, and the structural support of the dome is also a sphere. In principle, the two can be regarded as the same structure.

Therefore, some designs used in the emergency survival module can also be applied to the dome structure.

However, there is a huge difference between the dome structure and the emergency survival module. If we want to apply the technology used in the emergency survival module to the dome, we need to adjust the technology itself.

What Chen Xin thought of actually refers to the kind of non Newtonian fluid material that still has a certain degree of elasticity and good supporting performance after it is solidified and hardened by impact. Can we follow the characteristics of this material to enhance the strength of the dome support and reduce the weight of the support structure, so that the dome can be made lighter and larger at the same time.

In terms of structure, both of them adopt triangular grid support structure, but they are different.

The triangular support structure is the most stable structure, so it is not unusual to use this structure as the support, and the emergency survival module only adopts a plane structure, while the dome support adopts a more complex three-dimensional structure.

Although the single-layer plane triangular network structure is also stable, because there is only one layer, and the material itself has a certain deformation, it will have a certain degree of elasticity.

If it is replaced with a rigid material, it will become extremely hard even if the deformation allowance is eliminated.

In Chen Xin's view, this is a place that can be used.

Although the dome structure needs to be stable, in a sense, it also needs a certain degree of elasticity, that is, shock resistance.

Because this is a cover covering a city. Although there are few meteorites now, in case of meteorite impact, the dome will bear the brunt and become the first layer of impact.

It is a feasible way to strengthen the dome material strength as much as possible to resist the impact of meteorite.

But there is no doubt that the requirements of material processing will become very high, and the requirements of material science itself will also be very high, and a lot of expensive materials will be needed to achieve this.

This is not unacceptable for Chen Xinhe and the state, but it also lacks cost performance.

Therefore, if there are cost-effective materials that can be used to strengthen the dome structure, it is naturally the best thing.

In the current determined urban design drawings of dome, the supporting material of dome structure is high-performance steel, which is constructed into a triangular grid structure in the form of hollow pipe to provide sufficient support and strength.

The outer layer is made of EFTE material, which is then spliced together to form the outer layer of the dome.

The reason for this is to resist possible meteorite impact.

If it's a large meteorite impact, it doesn't need to mention anything. Unless Chen Xin builds an energy shield now, otherwise a meteorite will fall down and the whole city will be gone, and there will be no problem of resistance.

But if it's a small meteorite, even a little bit of it may fall. The structure of the dome can at least play a buffer role, so that it will not cause great damage to the city under the dome.

Moreover, even if a part of the single air bag structure is damaged, the damaged part can be replaced, so that the whole dome will not need to be replaced if a hole is damaged.

Originally, only steel is suitable for this kind of large support structure, and other materials are not suitable in terms of strength or cost.

But now the appearance of this kind of non Newtonian liquid material gives Chen Xinxin a choice and inspiration.

The strength of this material after solidification and hardening has been tested. Although it is not particularly outstanding in hardness, its toughness is very good.

Although the original development idea of this material is to exist as a liquid and harden after being impacted, it can not be used as a kind of material if its characteristics after hardening are used.

According to Chen Xin's idea, he wants to use this material to weave a layer of support structure on the surface of the triangular EFTE airbag to enhance the strength of the dome.

When designing the dome structure, Chen Xin actually discussed this problem with relevant experts, but at that time he proposed to use steel wire as the material, but in this way, the quality was greatly increased, and the steel wire itself was relatively flexible and the support strength was not enough.

Although we also proposed a series of possible materials such as engineering plastics and carbon fiber, either the cost or the material itself could not meet the requirements, so we had to give up this idea.

But now the appearance of this kind of non Newtonian liquid material gives Chen Xin a new choice.

He can use this material to fill the inner layer of the EFTE airbag with the same reinforcement structure as the emergency survival capsule. When the EFTE airbag is impacted by external force, this layer of reinforcement structure can be used as support and buffer to disperse the impact caused by external force and enhance the strength of the EFTE airbag.

Otherwise, EFTE material itself is also a kind of flexible material, which can't maintain its own shape after being damaged, which is a certain trouble for the dome.

For example, although some small meteorites have broken through EFTE airbags, they have only broken through a small hole in the airbags. In this case, if there is no internal support, the airbags will collapse completely.

Although it is easy to find the damaged area in the subsequent repair, it will also affect the overall performance of the dome.

But if the airbag itself has a certain strength, even after it is broken down, it can still maintain its own shape, which can maximize the overall shape of the dome without affecting the performance.

Moreover, even if the meteorite is relatively large and the breakdown area is relatively large, this material can be used as a reinforcement support to maintain the overall shape and structure of EFTE airbag as far as possible, so as not to cause large-area collapse due to the destruction of the lower steel structure support.

Although Chen Xin's idea is very good, whether it is practical or not still needs to be tested.

Now Chen Xin is planning to conduct a simulation test to see if his idea is feasible.

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