4.13.12. 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)