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Features > Components > Stringer Segments > Discrete Object Assignment

Discrete Object Assignment

Stringer segments are constructed by assigning shell and beam elements corresponding to the objects of the panel - skin, flange, web etc. The following tables show which objects are assigned for each modeling technique (per family, per concept).

ClosedTechnique 2, Uniaxial Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Stiffener (Full Beam)
Blade Stiffened     (L) and/or (R) Web
I Stiffened Yes Yes (L) and/or (R)

Flange Top*

Web

Flange Bottom

T Stiffened Yes Yes (L) and/or (R)

Flange Top*

Web

Inverted T Stiffened     (L) and/or (R)

Web

Flange Bottom

Z Stiffened Yes Yes (L) and/or (R)

Flange Top*

Web

Flange Bottom

J Stiffened Yes No (L) and/or (R)

Flange Top*

Web

Flange Bottom

C Stiffened Yes No (L) and/or (R)

Flange Top*

Web

Flange Bottom

Integral L Stiffened     (L) and/or (R)

Web

Flange Bottom

Angle Stiffened Yes Yes (L) and/or (R)

Flange Top*

Web

* For bonded panel concepts, the flange top and open span skin objects are combined to form the bonded combo object.

ClosedTechnique 2, Hat Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Stiffener (Full Beam)
Hat Stiffened Yes Yes (L) and/or (R)

Closed Span

Flange Top (L)*

Flange Top (R)*

Web (L)

Web (R)

Crown Bottom

* For bonded panel concepts, the flange top and open span skin objects are combined to form the bonded combo object.

ClosedTechnique 3, Uniaxial Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Web (Shell) Stiffener (Full Beam) Free Flange (Beam)
I Stiffened Yes Yes (L) and/or (R) Web Flange Top* Flange Bottom
T Stiffened Yes Yes (L) and/or (R) Web Flange Top*  
Inverted T Stiffened     (L) and/or (R) Web   Flange Bottom
Z Stiffened Yes Yes (L) and/or (R) Web Flange Top* Flange Bottom
J Stiffened Yes No (L) and/or (R) Web Flange Top* Flange Bottom
C Stiffened Yes No (L) and/or (R) Web Flange Top* Flange Bottom
Integral L Stiffened     (L) and/or (R) Web   Flange Bottom
Angle Stiffened Yes Yes (L) and/or (R) Web Flange Top*  

* For bonded panel concepts, the flange top and open span skin objects are combined to form the bonded combo object.

ClosedTechnique 3, Hat Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Hat Combined Flange (Beam) Hat Combined Web (Shell) Crown (Beam)
Hat Stiffened Yes Yes (L) and/or (R)

Flange Top (L)*

Flange Top (R)*

Closed Span

Web (L)

Web (R)

Crown Bottom

* For bonded panel concepts, the flange top and open span skin objects are combined to form the bonded combo object.

ClosedTechnique 4a, Uniaxial Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Web (Shell) Left Flange/Skin (Shell) Right Flange/Skin (Shell) Left Free Flange (Shell) Right Free Flange (Shell)
Blade Stiffened     (L) and/or (R) Web        
I Stiffened Yes No (L) and/or (R) Web Bonded Combo (L)* Bonded Combo (R)* Flange Bottom (L) Flange Bottom (R)
T Stiffened Yes No (L) and/or (R) Web Bonded Combo (L)* Bonded Combo (R)*    
Inverted T Stiffened     (L) and/or (R) Web     Flange Bottom (L) Flange Bottom (R)
Z Stiffened Yes No (L) and/or (R) Web Bonded Combo (L)*     Flange Bottom (R)
J Stiffened Yes No (L) and/or (R) Web Bonded Combo (L)* Bonded Combo (R)* Flange Bottom (L)  
C Stiffened Yes No (L) and/or (R) Web   Bonded Combo (R)*   Flange Bottom (R)
Integral L Stiffened     (L) and/or (R) Web       Flange Bottom (R)
Angle Stiffened Yes No (L) and/or (R) Web Bonded Combo (L)*      

* Two discrete FEM objects, the flange skin span, and the attached flange, are combined to form the bonded combo panel object.

ClosedTechnique 4a, Hat Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Left Flange/Skin (Shell) Right Flange/Skin (Shell) Left Web (Shell) Right Web (Shell) Crown (Shell) Closed Span (Shell)
Hat Stiffened Yes No (L) and/or (R) Bonded Combo (L)* Bonded Combo (R)* Web (L) Web (R) Crown Bottom Closed Span
Two Sheet Stiffened Yes No   Crown Top (L)* Crown Top (R)* Web (L) Web (R) Crown Bottom Closed Span

* Two discrete FEM objects, the flange skin span, and the attached flange, are combined to form the bonded combo and crown top panel objects.

ClosedTechnique 4b, Hat Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Left Flange/Skin (Shell) Right Flange/Skin (Shell) Left Attached Flange (Shell) Right Attached Flange (Shell) Left Web (Shell) Right Web (Shell) Crown (Shell) Closed Span (Shell)
Hat Stiffened Yes No (L) and/or (R) Bonded Combo (L)* Bonded Combo (R)* Bonded Combo (L)* Bonded Combo (R)* Web (L) Web (R) Crown Bottom Closed Span
Two Sheet Stiffened Yes No   Crown Top (L)* Crown Top (R)* Crown Top (L)* Crown Top (R)* Web (L) Web (R) Crown Bottom Closed Span

* Two discrete FEM objects, the flange skin span, and the attached flange, are combined to form the bonded combo and crown top panel objects.

ClosedTechnique 5, Uniaxial Stiffened

Available Panel Concepts Bonded Fastened L/R Open Span (Shell) Left Flange/Skin (Shell) Right Flange/Skin (Shell) Stiffener (Full Beam)
I Stiffened Yes Yes (L) and/or (R) Bonded Combo (L)* Bonded Combo (R)*

Web

Flange Bottom

T Stiffened Yes Yes (L) and/or (R) Bonded Combo (L)* Bonded Combo (R)* Web
Z Stiffened Yes Yes (L) and/or (R) Bonded Combo (L)*  

Web

Flange Bottom
J Stiffened Yes No (L) and/or (R) Bonded Combo (L)* Bonded Combo (R)*

Web

Flange Bottom
C Stiffened Yes No (L) and/or (R)   Bonded Combo (R)*

Web

Flange Bottom
Angle Stiffened Yes Yes (L) and/or (R) Bonded Combo (L)*   Web

* For bonded panel concepts, the flange top and open span skin objects are combined to form the bonded combo object.

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