4.12.12. HingeMidpointΒΆ
-
beamIntegration
('HingeMidpoint', tag, secI, lpI, secJ, lpJ, secE) Create a HingeMidpoint beamIntegration object. Midpoint integration over each hinge region is the most accurate one-point integration rule; however, it does not place integration points at the element ends and there is a small integration error for linear curvature distributions along the element.
tag
(int)tag of the beam integration. secI
(int)A previous-defined section object for hinge at I. lpI
(float)The plastic hinge length at I. secJ
(int)A previous-defined section object for hinge at J. lpJ
(float)The plastic hinge length at J. secE
(int)A previous-defined section object for the element interior. The plastic hinge length at end I (J) is equal to
lpI
(lpJ
) and the associated force deformation response is defined by thesecI
(secJ
). The force deformation response of the element interior is defined by thesecE
. Typically, the interior section is linear-elastic, but this is not necessary.lpI = 0.1 lpJ = 0.2 beamIntegration('HingeMidpoint',tag,secI,lpI,secJ,lpJ,secE)