Impact force reduction after passing through a medium

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SUMMARY

The discussion centers on the impact force reduction experienced by a wall after a car collides with a mass of soil. The original poster inquires about the attenuated force (F) felt by the wall, suggesting that while Finite Element Method (FEM) modeling is a viable approach, an analytical solution based on physics may also exist. The conversation highlights the importance of understanding force attenuation in structural design, particularly in scenarios involving potential vehicle collisions with protective barriers.

PREREQUISITES
  • Understanding of impact force dynamics
  • Familiarity with Finite Element Method (FEM) modeling
  • Knowledge of soil mechanics and material properties
  • Basic principles of structural engineering
NEXT STEPS
  • Research analytical solutions for impact force attenuation in soil
  • Explore advanced FEM techniques for modeling impact scenarios
  • Study the principles of soil mechanics relevant to force transmission
  • Investigate design standards for protective barriers against vehicular impacts
USEFUL FOR

Structural engineers, civil engineers, accident reconstruction specialists, and anyone involved in the design of protective barriers against vehicle impacts.

boyboy400
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TL;DR
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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Can you say what the context of the question is?
 
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.
 
Why are you anticipating a car running into your wall so that you need to add protection?
 
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.
 

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