Shear test

killswitchengage · Jan 30, 2019

Hi
One friend of mine brought a question to me about the shear test apparatus . He asked why the load applied to the soil specimen via the load hanger system turn out to be 10 times greater then the actual force introduced using the plates ? in other words does the leaver arm multiply the load or is there a configuration in the apparatus that does ?
sorry for my English

oldestguy · Jan 30, 2019

One way to get a significant load on a test sample is with a lever system requiring less dead weights.

killswitchengage · Jan 31, 2019

that's obvious but from did the 10 times multiplication came from ?

EireChch · Feb 3, 2019

isnt it just that the leaver arm transfers it to a smaller area than the plates occupy hence you get increase force / confining pressure?

morecoffeeplz · Feb 15, 2019

Lever arm loading devices have a beam ratio. The one to which you refer must have a beam ratio of 10. Mass of load X beam ratio / area of specimen should equal the normal stress.

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Shear test

killswitchengage

Geotechnical

oldestguy

Geotechnical

killswitchengage

Geotechnical

EireChch

Geotechnical

morecoffeeplz

Civil/Environmental

Similar threads

Part and Inventory Search

Sponsor