Impact force reduction after passing through a medium

In summary, the study explores how impact forces are mitigated when objects pass through different media. It highlights that various materials can absorb or dissipate energy, leading to reduced impact forces upon collision. The effectiveness of impact force reduction is influenced by the properties of the medium, such as density and elasticity, which play crucial roles in energy transfer and dispersion. The findings suggest potential applications in safety gear and protective structures, emphasizing the importance of material selection in minimizing impact-related injuries and damage.
  • #1
boyboy400
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TL;DR Summary
A car hits a mass of soil with the impact force of F. We know properties of the mass and its dimension. What is the force felt at the other side of the mass?
Hello,

Please see the attached sketch. A car hits a mass of soil and applies the impact force of F. The force/wave travels the distance L through the mass at the end of which there is a wall so I think the force attenuates. Assume we have all the properties of the mass. My question is, what would be the attenuated/decreased F felt by the wall? I know this can be modeled with FEM but I have a feeling there should be an analytical solution based on physics for it too. Would really appreciate any insight.
 

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  • #2
Can you say what the context of the question is?
 
  • #3
Not sure what you mean by the context. Let's say you want to design the wall to withstand the force but you know the force felt by the wall will be reduced due to existence of the mass of soil.
 
  • #4
Why are you anticipating a car running into your wall so that you need to add protection?
 
  • #5
This looks like some sort of accident investigation. Please be aware that we can't provide any legal advice in situations like this.

Consequently, this thread is now closed.
 

FAQ: Impact force reduction after passing through a medium

What is impact force reduction?

Impact force reduction refers to the decrease in the force exerted by an object when it strikes another object after passing through a medium. This reduction occurs due to the energy lost in the medium, which can be due to absorption, scattering, or other interactions within the medium.

How does the type of medium affect impact force reduction?

The type of medium significantly affects impact force reduction. Different materials have varying densities, viscosities, and elastic properties, all of which influence how much energy is absorbed or dissipated. For example, a dense medium like water will reduce impact force more effectively than a less dense medium like air.

What role does the thickness of the medium play in reducing impact force?

The thickness of the medium plays a crucial role in reducing impact force. A thicker medium provides more material for the impact force to interact with, leading to greater energy dissipation and absorption. Therefore, the thicker the medium, the greater the reduction in impact force.

Can the velocity of the object affect impact force reduction?

Yes, the velocity of the object can affect impact force reduction. Higher velocities generally lead to greater impact forces, but they also increase the interaction between the object and the medium. This can result in more energy being absorbed or dissipated by the medium, thereby reducing the impact force more effectively.

What are some practical applications of impact force reduction through a medium?

Practical applications of impact force reduction through a medium include vehicle crash safety features like airbags, which use gas as a medium to reduce impact forces on passengers. Another example is sports equipment, such as helmets and padding, which use various materials to dissipate impact energy and protect athletes. Additionally, engineering structures like barriers and protective coatings often use layers of material to reduce the impact force from collisions or projectiles.

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