6. Gaussian Integration Points

6. Gaussian Integration Points#

Specifies the number of Gaussian integration points for finite elements. Normally, no changes are required.

Input settings#

6_Gaussian_Integral_Point JSON key: Gaussian integration points object

POINT_IN_1D(6) Number of Gaussian integration points in one direction.

POINT_IN_TRIANGLE(6) Number of integration points in a triangle.

MAT_POINTS(6) B-H characteristic calculation points for nonlinear calculation.

Input format#

Text-format section
Type:

Fixed parameter set

Number of rows:

1

Number of parameters:

3

Text format#
* POINT_IN_ID * POINT_IN_TRIANGLE * MAT_POINTS *
        I                  I               I

JSON format#

JSON format from 2024.11#
"6_Gaussian_Integral_Point": {
    "POINTS_IN_1D": I,
    "POINT_IN_TRIANGLE": I,
    "MAT_POINTS": I
},

Important

Release 2024.11

In JSON format, default values are used when these parameters are not defined. See the detailed descriptions for default values.

Detailed description#

Important

Normally, these parameters do not need to be changed. Even engineers experienced in the finite element method rarely change them.

6_Gaussian_Integral_Point#

6_Gaussian_Integral_Point#
JSON key:

Gaussian integration points object

POINT_IN_ID#

POINT_IN_1D(6)#
Text-format section
Fixed parameter set 1#
[row, col] = [1, 1]
Data type:

Integer (I)

Values:

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12

Description:

Specifies the number of Gaussian integration points in one direction. For first-order elements (NODE_ORDER(4) = 1), 3 is appropriate; for second-order elements (NODE_ORDER(4) = 2), 5 is recommended.

Default value:

3

POINT_IN_TRIANGLE#

POINT_IN_TRIANGLE(6)#
Text-format section
Fixed parameter set 1#
[row, col] = [1, 2]
Data type:

Integer (I)

Values:

1, -3, 3, 4, 6, 7, 12

Description:

Specifies the number of integration points in a triangle. 7 is generally appropriate, but 3 may be sufficient.

Default value:

7

MAT_POINTS#

MAT_POINTS(6)#
Text-format section
Fixed parameter set 1#
[row, col] = [1, 3]
Data type:

Integer (I)

Values:

0, 1

Description:

B-H characteristic calculation points for nonlinear calculation (NON_LINEAR(2)). Select calculation at the center point only (0) or at all Gaussian points (1). Normally 0 is sufficient, but 1 is effective for analysis using only hexahedra. When tetrahedra and hexahedra are mixed, tetrahedra are calculated with 0 and hexahedra with 1 internally.

Default value:

1

Important

Gaussian integration point selection directly affects analysis accuracy and computation time. Choose an appropriate value.