CP4

Bilinear Quadrilateral

• Number of Nodes: 4

• Number of DoFs: 2 (Translation, Translation)

• Integration Scheme: 2nd Order Gauss (Full) or 1st Order Gauss (Reduced)

• Supports Body Force

• Constant Consistent Mass Matrix With Same Order Integration

encoding

Syntax

element CP4 (1) (2...5) (6) [7] [8] [9]
# (1) int, unique element tag
# (2...5) int, node i, j, k, l
# (6) int, material tag
# [7] double, element thickness, default: 1.0
# [8] bool string, reduced integration switch, default: false
# [9] bool string, nonlinear geometry switch, default: false

Remarks

• The CP4 element resembles CPS4 and CPE4 elements in ABAQUS.

• The full integration scheme uses 2-by-2 Gauss scheme and the reduced integration uses a single integration point at the center of the element.

• The reduced integration scheme also imports anti-hourglassing technique.