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Thanks for all the information guys. much appreciated

thanks for the replies. the object is 4 1/4 ft high with an OD of approx 2 ft, wall thickness is around 1 inch. so it is a fairly large object...

hi all, i have been asked to investigate the feasibility of bronze 3d printing at our plant. we currently have a bronze foundry where we do sand casting. the parts that are cast then need to be machined to get the correct surface finish and dimensions. would it be possible to just print these...

i agree. but i've still kept the relationship between delta KE and PE. i've just changed the way i get the PE. there should be another term in there, but i'm hoping this at least gets me in the ball park.

but wouldn't the PE be lost once the mass returns to the ground? it will not accelerate the mass in the horizontal direction. i've basically assumed that the change in PE is energy lost due to the deflection caused by the impact with the object. i'm not sure if this is correct though. it seems...

okay. so i have modified my calculations. i stopped assuming that the displaced height would remain constant at 0.2m. this assumption meant that there were no solutions for speeds less than 5km/h as there wasn't enough energy. instead, i calculated the theoretical maximum height that would be...

thank you prex. that is exactly where i am. it does not seem realistic though. i've attached a spreadsheet with some of my calculations. i also assumed half the mass would be raised 0.2m...

thanks zekeman. but if i did calculated the force with the ski hitting a wall, there would be no way to determine the time interval. it would be ideal if i could make the change in potential energy dependent on the initial velocity. there must be another term that i am missing out somewhere.

thank you! that makes a lot of sense. any idea how i could make the change in potential energy dependent on the initial velocity?

okay. i understand all of that. what i'd like to know is if i went about calculating the impact force correctly. my final answers do not make sense to me.

hi rb, thanks for the advice. the problem i'm having is that the impact will cause a deflection, not a deformation. all the other threads i've come across involve a deformation. thanks

it will be fitted to the bottom of an acv.

hi all I'm having a bit of trouble calculating impact forces on a 'ski'that I'm designing. the front of the ski is sloped, the slope has a length of 0.4m and a height of 0.2m. i need to calculate the forces on the front of the ski when it impacts a solid object as speeds ranging from 1 - 20...