OVERVIEW
2D Member Type
nGen supports various 2D member types.
So, what is the difference of 2D elements?
1. Categorized Characteristics of Each Model
MODEL 1: WALL (Membrance)
1. No meshed element
2. No out-of-plane stiffness
3. Only in-plane stiffness
MODEL 2: WALL (PLATE, NOT MESHED)
1. No meshed element
2. In-plane and out-of-plane stiffness
MODEL 3: WALL (PLATE, MESHED)
1. Meshed elements in Analysis
2. Identical to plate element
3. Design as wall member
MODEL 4: WALL (WALL COLUMN)
1. Identical to MODEL 3
2. Design as Column or Beam member
MODEL 5: PLATE
MODEL 6: SLAB (PLATE OUT&IN)
1. Meshed elements in Analysis
2. Identical to PLATE element
3. Design as SLAB member
MODEL 7: SHELL
2. 2D Member Type: Analysis Result (Deformations)
1. Model 2 is not meshed. Therefore, it has different results from others.
2. Model 3~5, and 7 have the same results because all of them is plate element.
But, only MODEL 6 (Slab) has the different result because "DRILLING DOF" OPTION IS CONSIDERED.
* If checking off this option, MODEL 6 (Slab) will have the same result as other models.
3. Since MODEL 1 has no out-of-plane stiffness, infinite deformation can occur. So, it is excluded from the comparison.
3. 2D Member Type: Summary
|
Model 1 Wall (Membrane) |
Model 2 Wall (Not meshed) |
Model 3 Wall (Meshed) |
Model 4 Wall Column |
Model 5 Plate |
Model 6 Slab |
Model 7 Shell |
|
| Member Type | Wall | Wall |
Wall / Basement Wall |
Wall Column / Plate Beam |
Plate |
Slab / Flat Slab /Footing |
Shell |
| Design Type | Wall | Wall |
Wall / Basement Wall |
Column (Axial +Flesural) | Plate (Axial + Flexural) | Slab (Flesural of Out-of-Plane) | Not Designed |
| Mehsed Shape | x | x | o | o | o | o | o |
| Out of Plane Stiffness | x | o | o | o | o | o | o |
| In Plane Stiffness | o | o | o | o | o | o | o |
| Drilling DOF | x | x | x | x | x | o | x |
4. Drilling Degrees of Freedom
Degree of freedom for the torsion of in-plane.