Question #401682 on Yade changed: https://answers.launchpad.net/yade/+question/401682
Jan Stránský proposed the following answer: Hi Jonathan, next time please try the script that it really works ;-) and please doulble check if both scripts are exactly the same for the two versions (especially O.bodies.append, see below) To get some effect, you should use O.bodies.append(body) so that the engines know about the particle. Do you use it in your scripts or not? If you don't add body to O.bodies, than angVel does not change (but the body does not move at the same time, because Yade engines do not know about the particle) With O.bodies.append(body), angVel is reset after O.step(), which is expected (see e.g. [1] and links from there). Setting angMom is the solution. The relation is angMom = inertiaTensor*angVel (similar to momentum=mass*velocity). If this works for you, it should not be a problem to correctly define inertiaTensor. cheers Jan [1] https://answers.launchpad.net/yade/+question/274324 2016-09-22 12:57 GMT+02:00 Jonathan Pergoli < question401...@answers.launchpad.net>: > Question #401682 on Yade changed: > https://answers.launchpad.net/yade/+question/401682 > > Jonathan Pergoli posted a new comment: > Hi Jan, > > sorry I will provide the working script: > > E1=1e+8 > E2=5e+7 > mat=FrictMat(density=643,frictionAngle=0.1489,label="MLI",young=E2) > MLI=O.materials.append(mat) > a=.2754 > b=.2822 > c=.1963 > aa=a/2 > bb=b/2 > cc=c/2 > h=.65 > dist=0 > theta=0 > thetav=0 > v1=(aa,bb,c) > v2=(aa,-bb,c) > v3=(-aa,-bb,c) > v4=(-aa,bb,c) > v5=(aa,bb,0) > v6=(aa,-bb,0) > v7=(-aa,-bb,0) > v8=(-aa,bb,0) > V=[v1,v2,v3,v4,v5,v6,v7,v8] > vz=.19 > R=[[m.cos(theta),0,m.sin(theta)],[0,1,0],[-m.sin(theta),0,m.cos(theta)]] > v1=(R[0][0]*V[0][0]+R[0][1]*V[0][1]+R[0][2]*V[0][2],R[1][0]* > V[0][0]+R[1][1]*V[0][1]+R[1][2]*V[0][2],R[2][0]*V[0][0]+R[ > 2][1]*V[0][1]+R[2][2]*V[0][2]) > v2=(R[0][0]*V[1][0]+R[0][1]*V[1][1]+R[0][2]*V[1][2],R[1][0]* > V[1][0]+R[1][1]*V[1][1]+R[1][2]*V[1][2],R[2][0]*V[1][0]+R[ > 2][1]*V[1][1]+R[2][2]*V[1][2]) > v3=(R[0][0]*V[2][0]+R[0][1]*V[2][1]+R[0][2]*V[2][2],R[1][0]* > V[2][0]+R[1][1]*V[2][1]+R[1][2]*V[2][2],R[2][0]*V[2][0]+R[ > 2][1]*V[2][1]+R[2][2]*V[2][2]) > v4=(R[0][0]*V[3][0]+R[0][1]*V[3][1]+R[0][2]*V[3][2],R[1][0]* > V[3][0]+R[1][1]*V[3][1]+R[1][2]*V[3][2],R[2][0]*V[3][0]+R[ > 2][1]*V[3][1]+R[2][2]*V[3][2]) > v5=(R[0][0]*V[4][0]+R[0][1]*V[4][1]+R[0][2]*V[4][2],R[1][0]* > V[4][0]+R[1][1]*V[4][1]+R[1][2]*V[4][2],R[2][0]*V[4][0]+R[ > 2][1]*V[4][1]+R[2][2]*V[4][2]) > v6=(R[0][0]*V[5][0]+R[0][1]*V[5][1]+R[0][2]*V[5][2],R[1][0]* > V[5][0]+R[1][1]*V[5][1]+R[1][2]*V[5][2],R[2][0]*V[5][0]+R[ > 2][1]*V[5][1]+R[2][2]*V[5][2]) > v7=(R[0][0]*V[6][0]+R[0][1]*V[6][1]+R[0][2]*V[6][2],R[1][0]* > V[6][0]+R[1][1]*V[6][1]+R[1][2]*V[6][2],R[2][0]*V[6][0]+R[ > 2][1]*V[6][1]+R[2][2]*V[6][2]) > v8=(R[0][0]*V[7][0]+R[0][1]*V[7][1]+R[0][2]*V[7][2],R[1][0]* > V[7][0]+R[1][1]*V[7][1]+R[1][2]*V[7][2],R[2][0]*V[7][0]+R[ > 2][1]*V[7][1]+R[2][2]*V[7][2]) > body=utils.polyhedron((v1,v2,v3,v4,v5,v6,v7,v8),fixed= > False,color=(.6,.45,0),material="MLI",wire=False) > body.state.angVel=(0,0,0.1) > r=m.sqrt(aa**2+bb**2) > Rj=m.sqrt(r**2+cc**2) > Ri=0.05 > Rr=Rj*Ri/(Rj+Ri) > mu_rM=0.05 > mu_rG=1.08 > KN=E1*2*Ri*E1*2*Ri/(E1*2*Ri+E1*2*Ri) > KR=3*Ri**2*mu_rG**2*KN/4 > > O.engines=[ > ForceResetter(), > InsertionSortCollider([Bo1_Polyhedra_Aabb()]), > InteractionLoop( > [Ip2_FrictMat_FrictMat_MindlinPhys(en=.45,es=.45, > krot=KR,frictAngle=.7853)], > [Law2_ScGeom_MindlinPhys_Mindlin(includeMoment=True)] > ), > NewtonIntegrator(gravity=(0,0,-2.5e-4),damping=0), > ] > > The script is the same and also the version of yadedaily. > > I'll try with angMom. > > Thank you, > > Jonathan > > -- > You received this question notification because your team yade-users is > an answer contact for Yade. > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-users > Post to : yade-users@lists.launchpad.net > Unsubscribe : https://launchpad.net/~yade-users > More help : https://help.launchpad.net/ListHelp > -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp