Wire Cable Shock Load Calculation

[schoomer]

Hello, we are doing an activity at work to calculate what the shock load would be on a wire cable under the following conditions.

There is some conjecture on how best to do this so we figured it would be best to ask some people with bigger brains than us ;)

Hopefully the following info is enough for anyone to assist us.

Please let us know if any further info is required.

Many thanks.

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Stretch coefficient of wire cable is 0.333%
Cable length is 20m
Cable angle is 15 degrees from perpendicular
Fall length is 1.2m
Weight on cable is 100kg

 

[Naty1]

If you don't get good ideas on this forum, try: http://www.saviac.org/

You know FT = MV, right?

But I don't know what a stretch coefficient is nor how to work that figure into a time (T) of interaction...One thing you'll have to decide is if the weight of the cable is significant or not relative to your 100 KG weight...

also, I don't know why your cable is at a 15 degree angle (rom vertical?) but the weight will drop vertically and snap the cable to the vertical position...so unless there are contraints maintaining the angle at 15 degrees, I'd guess you could ignore it as a start. But if the weight of the cable IS significant, then it's own momentum in falling with the weight and from angle to vertical should be taken into account.