Yade

summary force of O.forces.setPermF and reaction force from the particles to the footing .Is it correct ?

Asked by Bowonchanok Maneerat on 2020-05-10

I made a footing on the particles for compression after that i use the force on footing by O.forces.setPermF(plate.is,vector3).then run to simulation my script . I use O.force.f(plate.id) in terminal ,Then output is summary force of O.forces.setPermF and reaction force from the particles to the footing .Is it correct ?

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Language:: English Edit question

Status:: Answered

For:: Yade Edit question

Assignee:: No assignee Edit question

Last query:: 2020-05-10

Last reply:: 2020-05-10

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Jan Stránský (honzik) said on 2020-05-10:

Hello,

> i use the force on footing by O.forces.setPermF(plate.is,vector3).

this is a syntax error. Probably meant plate.id?

> output is summary force of O.forces.setPermF and reaction force from the particles to the footing .Is it correct ?

Please read [1], where it is suggested to provide a MWE. In this case, a MWE provides the answer, so by creating a MWE, you would have found the answer yourself.
###
O.bodies.append(sphere((0,0,0),1))
O.forces.setPermF(0,(1e7,0,0))
O.step()
print(O.forces.f(0))
O.bodies.append(sphere((1,0,0),1))
O.step()
print(O.forces.f(0))
print(O.forces.f(1))
print(O.interactions[0,1].phys.normalForce)
###
so yes, it is summary of permanent force and "reaction" force