BuildingTcl -- addElementType: ElementModelLabel beamWithHinges

Commands

addElementTypeData ElementTypeLabel $ElementTypeLabel

addElementTypeData ElementModelLabel nonlinearBeamColumn

<addElementTypeData ElementTypeDescription $ElementTypeDescription >

<addElementTypeData TransformationType $TransformationType>

<addElementTypeData PlasticHingeLengthModelLabel $PlasticHingeLengthModelLabel>

addElementType

Arguments

$ElementTypeLabel 

Unique ElementType Label for reference

$ElementTypeDescription 

Text. Optional, default = blank {}

$TransformationType 

Geometric Transformation Type, based on OpenSees geometricTransf. Optional, default = Linear

Options

Linear -- Opensees Linear Transformation

PDelta -- Opensees PDelta Transformation

Corotational -- Opensees Corotational Transformation

$PlasticHingeLengthModelLabel

BuildingTcl -- PlasticHingeLengthModel. Optional, default = Point08L

The PlasticHingeLengthModel uses the actual individual-element properties to calculate the hinge length

Notes

The addElementType command must be placed at the end of each Element-data definition, as it takes all data defined since the last addElementType command and define the Element.

Options

PlasticHingeLengthModel

GaussLobattoIntegrationWeights -- gives the same hinge length as the force-based beam-column element with 4 integration points

Lp=0.05*ElementLength

Priestley96 --

Lp1 = 0.08*(ElementLength)+0.15*(fY_ksi)/(Db);

Lp2 = 0.3*(fY_ksi)*(Db);

Lp = min(Lp1,Lp2)

Berry06 --

Lp1 = 0.05*(ElementLength) + 0.26*(fY_ksi)*(Db)/(fpc_ksi)^2

Lp2 = 0.25*(ElementLength)

Lp = min(Lp1,Lp2)

Mattock67 --

Lp = 0.05*(ElementLength) + 0.5*(ElementDepth)

HOver2 --

Lp = 0.5*(ElementDepth)

HOver1 --

Lp = 1.0*(ElementDepth)

Point05L --

Lp = 0.05*(ElementLength)

Point08L --

Lp = 0.08*(ElementLength)

The following are calculated internally:

ElementLength

individual-element length

fY_ksi

yield strength of the longitudinal reinforcement in the section in ksi (if not specified in section = 60ksi)

Db

diameter of longitudinal reinforcement in the section (if not specified in section = 1.0)

fpc_ksi

nominal compressive strength of concrete in section (if not specified in section = 4.0 ksi)

ElementDepth

depth of cross section (if not specified in section = 0.)

OpenSees Object

This ElementModel is based on the OpenSees Beam With Hinges Element

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BuildingTcl -- addElementType

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