Users:General FEM Analysis/Elements Reference/Solid NURBS

Contents 1 General Description 1.1 Element Type 1.2 Degrees of Freedom 1.3 Parameter Description 1.4 Example of a Complete Input Block 2 Element Loading 3 Benchmarks 4 References

General Description

This element is coded but not extensively tested.

Element Type

• This element provides an geometrically nonlinear, isogeometric solid element.
• Mass computation is implemented (assumption of constant density in element).

Degrees of Freedom

The elements uses three translatoric degrees of freedom (Disp_X, Disp_Y, Disp_Z) at each control point.

Parameter Description

Compulsory Parameters
Parameter	Values, Default(*)	Description
MAT	EL-MAT int	Linking to a material input block
INT_TYPE_SOLID_NURBS	FULL, USER	Control of integration type. If USER, the optional Parameter GAUSS_U (and GAUSS_V) has to be defined
Optional Parameters
Parameter	Values, Default(*)	Description
GAUSS_U GAUSS_V GAUSS_W	GAUSS_U = int GAUSS_V = int GAUSS_W = int	Number of Gauss point per element in u-, v- resp. w-direction. Must only to be defined when INT_TYPE_SOLID_NURBS = USER

Example of a Complete Input Block

EL-PROP 1 : SOLID_NURBS 
  MAT= EL-MAT 1
  INT_TYPE_SOLID_NURBS = USER !or FULL
  GAUSS_U = 4
  GAUSS_V = 4
  GAUSS_W = 4

Element Loading

The SOLID_NURBS element is able to carry the following loads:

• dead load

Benchmarks

The main benchmark file in the Carat++-repository is

• '../examples/benchmark_examples/isogeometric/11_isogeometric_solid/cbm_isogeometric_solid.txt'.

References

Whos here now:   Members 0   Guests 0   Bots & Crawlers 1