"bottoming out" effect

Dear All, for some time I am wondering by not getting the proper answer about what actually bottoming out effect by crash tests of passanger cars means. If anyone is able to answer, his/her help would be greatfully acknowledged.

With best regards

Simon Erzen

Reply to
Simon Erzen
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Probably the suspension bottoming out.

If that's not it, how about give some more details.

Reply to
Jeff Finlayson

Hi Jeff, for example, you can see it in der context here

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under subtitle Absorption of crash energy, 4th paragraph. Your help on this would be valuable and greatfully acknowledged.

Regards Simon

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Reply to
Simon Erzen

Dear Simon Erzen:

Some four-wheel-drive recreational vehicles have relatively stiff front structures. This can result in a very high deceleration of the passenger compartment and high loads on the occupants. A stiff front structure can also place excessive demands on the deformable barrier, causing the barrier to bottom out early in the crash sequence.

From the context, it applies to the deformable barrier. "Bottom out" in this context means that all the designed-for deformation is completed. Similar phrases might be "full stroke", "fully distorted", "collapsed", etc. "Bottom out" is poor choice of words, IMO. It is derived from the phenomenon in suspensions, described by Jeff Finlayson.

David A. Smith

Reply to
N:dlzc D:aol T:com (dlzc)

David explained it. Here's a little more.

The barrier has some type of spring system that bottoms out and becomes stiff. Like a shock absorber being fully compressed (or fully extended).

Reply to
Jeff Finlayson

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