Torque
Torque
(OP)
I am performing a simple static analysis on a hollow cylinder constrained on one end in all DOF and torqued on the other end using a *cload option and a rbe2 element. The stresses I observe on the cylinder are 1.5 times more than what I get through hand calculations. Any idea what could be happening? When I look at the rotational DOF values about the axis of the cylinder I see that there is a uniform value along the length. Shouldnot it be linearly varying?
Abhishek
Abhishek





RE: Torque
Unless you're kust using a beam element with cylindrical properties, then the rotation of the cylinder can only be expressed in terms of translation values whether it's modelled in shells or solids, surely?
corus
RE: Torque
I am using solid elements for the cylinder so I understand that the rotational DOF values must be zero on it. However my main concern is why are the stresses so high?
RE: Torque
With RBE2 elements you're effectively restraining the end by which you're applying the loads, radially. If this distance is 'reasonably' close to the constrained end then you may have some stress added to the constrained end. Add a picture of your stresses then people can make a judgement if this could be the cause .. or something else.
corus
RE: Torque