How can I prevent deformation of an ultrathin-walled tube during insertion?

In summary, the conversation discusses designing a mechanical system with two concentric tubes passing through a high density membrane. The outer tube has a tapered end and ultra thin walls, while the inner tube is more rigid and fills all available space to prevent deformation of the outer tube during insertion. There is still concern about potential deformation during the insertion process and the main condition is to prevent this from happening. The speaker also asks about what material parameters to discuss with the manufacturer and suggests experimenting with different tube sizes and types.
  • #1
edwardone123
4
1
Designing mechanical system where two concentric tubes will pass through high density membrane.
Outer tube will have tapered end .Outer tube will have ultra thin walls (about 0.3-0.5 mm) .Inner tube is more rigid and will fill all space inside outer tube,decreasing chance for deformation of outer tube .Still afraid about possible deformation of outer tube during process of insertion.I know that an average insertion force is about 50 Newtons
My main condition : prevent deformation/tearing of out er tube during insertion process
Questions
What parameters of material (rigidity ,something else ? ) I need to discuss with manufacturer of this part?
Thank you
 
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  • #2
Welcome to PF.
Before we can comment sensibly on specifications we will need a diagram that shows the relative positions of the membrane and the two tubes. Wall thickness is relative, what are the tube lengths and diameters?
 
  • #3
What size/length tubes are we talking about? How about visiting a model plane shop and buying some brass or aluminium tube to experiment with? Hypodermic needles are pretty strong and come in a range of sizes. 50N doesn't sound like much.
 

FAQ: How can I prevent deformation of an ultrathin-walled tube during insertion?

What is a tube with ultrathin wall?

A tube with ultrathin wall is a hollow cylindrical structure that has an extremely thin wall thickness, typically less than 1 millimeter. It is used in various scientific and industrial applications, such as in medical devices, electronics, and aerospace engineering.

What are the benefits of using a tube with ultrathin wall?

The main benefit of using a tube with ultrathin wall is its lightweight and high strength-to-weight ratio. It also allows for more precise control of fluid or gas flow, and can be easily bent or shaped for specific purposes. Additionally, it has a larger internal volume compared to its external size, making it efficient for space-constrained applications.

What materials are commonly used to make tubes with ultrathin wall?

Tubes with ultrathin wall can be made from a variety of materials, including metals such as aluminum, titanium, and stainless steel, as well as polymers like polyethylene and polycarbonate. The choice of material depends on the specific application and the required properties, such as strength, flexibility, and corrosion resistance.

How are tubes with ultrathin wall manufactured?

The manufacturing process for tubes with ultrathin wall involves either extrusion or rolling techniques. In extrusion, a heated metal or polymer is pushed through a die to form a hollow tube with a thin wall. Rolling involves passing a metal sheet through a series of rollers to reduce its thickness and form a tube. Both methods require precise control and specialized equipment to achieve the desired thickness.

What are some common applications of tubes with ultrathin wall?

Tubes with ultrathin wall have a wide range of applications in various industries. They are commonly used in medical devices, such as catheters and stents, as well as in electronics for heat dissipation and electrical insulation. They are also used in the aerospace and automotive industries for lightweight structural components. Other applications include fuel and fluid delivery systems, microfluidics, and filtration systems.

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