1.CAE操作
对应inp文件：
*Orientation, name="Datum csys-2", system=CYLINDRICAL
-20., -2.5, 20., -20., -2.5, 21.
** Name: Load-1 Type: Surface traction
*Dsload, orientation="Datum csys-2", constant resultant=YES
Surf-1, TRSHR, 10., -0.707107, 0.707107, 0.
2.操作原理：
using a local coordinate system to define shear directions
It is sometimes convenient to give shear and general traction directions with respect to a local coordinate system. The following two examples illustrate the specification of the direction of a shear traction on a cylinder using global coordinates in one ca and a local cylindrical coordinate system in the other ca. The axis of symmetry of the cylinder coincides with the global z-axis. A surface named SURFA has been defined on the outside of the cylinder.
In the first example the direction of the shear traction, , is given in global coordinates. The n of the resulting shear tractions using global coordinates is shown in Figure 34.4.3–3(a).
Figure 34.4.3–32424 Shear tractions specified using global coordinates (a) and a local cylindrical coordinate system (b).
*STEP
Step 1 - Specify shear directions in global coordinates
...
*DSLOAD
SURFA, TRSHR, 1., 0., 1., 0. ！suefa是自定义名称；trshr为载荷类型标签，见附表一；1.为载荷量，见关键字*DSLOAD； 0., 1., 0.为投影前向量。
...
*END STEP
In the cond example the direction of the shear traction, , is given with respect to a local cylindrical coordinate system who axis coincides with the axis of the cylinder. The n of the resulting shear tractions using the local cylindrical coordinate system is shown in Figure 34.4.3–3(b).
*ORIENTATION, NAME=CYLIN, SYSTEM=CYLINDRICAL
0., 0., 0., 0., 0., 1.
...
*STEP
Step 1 - Specify shear directions in local cylindrical coordinates
...
*DSLOAD, ORIENTATION=CYLIN
SURFA, TRSHR, 1., 0., 1., 0.
wireless是什么意思
...
*END STEP
3.附表一：和音是什么意思Distributed surface load types.
Load description | Load type label for element-bad loads | Load type label for surface-bad loads | Abaqus/CAE load type |
General surface traction | TRVECn, TRVEC | TRVEC | Surface traction |
Shear surface traction | TRSHRn, TRSHR | TRSHR |
也许的英文Nonuniform general surface traction | TRVECnNU, TRVECNU | romeo must dieTRVECNU | Surface traction (surface-bad loads only) |
hurts是什么意思Nonuniform shear surface traction | TRSHRnNU, TRSHRNU | TRSHRNU |
Pressure | Pn, P | P | Pressure |
Nonuniform pressure | PnNU, PNU | PNU | Pressure (surface-bad loads only) |
Hydrostatic pressure (available only in Abaqus/Standard) | HPn, HP | HP |
Viscous pressure (available only in Abaqus/Explicit) | VPn, VP | VP |
全国十大留学中介Stagnation pressure (available only in Abaqus/Explicit) | SPcontinuedn, SP | SP |
Hydrostatic internal and external pressure (only for PIPE and ELBOW elements ) | HPI, HPE | N/A | Pipe pressure japane cherry blossom |
Uniform internal and external pressure (only for PIPE and ELBOW elements ) | PI, PE | N/A |
Nonuniform internal and external pressure (only for PIPE and ELBOW elements ) | PINU, PENU | N/A |
| | | |
4.关键字 *DSLOAD
Data lines to define a general surface traction vector, a surface shear traction vector, or a general shell-edge traction vector:
First line:
1. Surface name.
2. Distributed load type label TRVEC, TRSHR, EDLD, TRVECNU, TRSHRNU, or EDLDNU.
3. Reference load magnitude, which can be modified by using the *AMPLITUDE option.
4. 1-component of the traction vector direction.
5. 2-component of the traction vector direction.
6. 3-component of the traction vector direction.
For a two-dimensional or axisymmetric analysis, only the first two components of the traction vector direction need to be specified. For the shear traction load labels TRSHR and TRSHRNU, the loading direction is computed by projecting the specified traction vector direction down upon the surface in the reference configuration. For nonuniform loads in Abaqus/Standard the magnitude and traction vector direction must be defined in ur subroutine UTRACLOAD. If given, the magnitude and vector will be pasd into the ur subroutine in an Abaqus/Standard analysis.
