Impact Load Analysis
Impact Load Analysis
(OP)
We were checking for a large lift where the load is heavier than 100 kips. The velocity with which this load is placed on the support is 20ft/min. How do we calculate the impact load. I tried to equate the kinetic energy to strain energy. However this produces an impact factor of greater than 1. So the total load applied on structure is greater than twice the weight. However as per AASHTO when I calculated that impact load is only 1/10 of the weight. What is the approach that should be taken in this scenario.






RE: Impact Load Analysis
What is your estimated deflection / compression?
BTW, an impact velocity of 20 ft/min (4 in/sec) sounds high for such a heavy lift. If this is a lift performed by a suitable crane, I would expect an impact velocity an order of magnitude lower (say 1/2 in/sec), or less.
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RE: Impact Load Analysis
RE: Impact Load Analysis
RE: Impact Load Analysis
What were your assumptions in getting this .086 answer? Do you mind sharing this calculation? On a side note I need to thank you for all the rare information available on your web site.
RE: Impact Load Analysis
Thanks I figured out your calculation. Sorry all along I was thinking that deceleration was 32.2 ft/sec/sec.
RE: Impact Load Analysis
Thanks for the comment about the website.
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