Question

abaqus生成fil文件后导入patran结果不全?abaqus是6.11版的，patran是2011版的。

Answer 1

你这种专业问题，得给出比较多的信息才可能得到准确的帮助。

我使用过ABAQUS多年，根据你的描述，有好几种可能的原因，其中最可能的原因是：
你在运行ABAQUS的时候，生成Fil文件的时候的频率太低，导致得到的数据是过分稀疏的结果。因此结果不全。解决办法是加大数据输出的频率，关键字是：
*EL FILE， FREQUENCY=1

**Data lines to define element integration output to the results file
节点变量输出是一样的，都要加大采集频率。

*NODE FILE
**Data lines to define nodal output to the results file
你的数据不全，有可能使用了如下的关键字。

*EL FILE, MODE, LAST MODE

另外，附送关于关键字*EL FILE输出的详细说明以及使用格式如下，请参考。
5.1 *EL FILE: Define results file requests for element variables.
This option is used to select the element variables that will be written to the results (.fil) file in an
Abaqus/Standard analysis or to the selected results (.sel) file in an Abaqus/Explicit analysis. In an
Abaqus/Explicit analysis it must be used in conjunction with the *FILE OUTPUT option.
Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE
Type: History data
Level: Step
Abaqus/CAE: Unsupported; Abaqus/CAE reads output from the output database file only.
References:
• “Output to the data and results files,” Section 4.1.2 of the Abaqus Analysis User’s Manual
• *FILE OUTPUT
Optional parameters:
DIRECTIONS
This parameter applies only to Abaqus/Standard analyses.
This parameter is used to obtain the directions of local element or material coordinate systems
when component output is requested. The directions are written as a separate record for each point
at which a local coordinate system is used. See “Results file output format,” Section 5.1.2 of the
Abaqus Analysis User’s Manual, for a detailed description.
Set DIRECTIONS=NO (default) if the local coordinate directions should not be written.
Set DIRECTIONS=YES if the local coordinate directions should be written.
ELSET
Set this parameter equal to the name of the element set for which this output request is being
made. If this parameter is omitted, the output will be written for all elements in the model. In
an Abaqus/Explicit analysis, output will also be written for all of the rebars in the model. The
REBAR parameter must be included in an Abaqus/Standard analysis to obtain rebar output.
FREQUENCY
This parameter applies only to Abaqus/Standard analyses.
Set this parameter equal to the output frequency, in increments. The output will always be
written to the results file at the last increment of each step unless FREQUENCY=0. The default is
FREQUENCY=1. Set FREQUENCY=0 to suppress the output.
LAST MODE
This parameter applies only to Abaqus/Standard analyses.
This parameter is useful only during eigenvalue extraction for natural frequencies (“Natural
frequency extraction,” Section 6.3.5 of the Abaqus Analysis User’s Manual) and for eigenvalue
buckling estimation (“Eigenvalue buckling prediction,” Section 6.2.3 of the AbaqusAnalysisUser’s
Manual). Set this parameter equal to the highest mode number for which output is required.
The default value is LAST MODE=N, where N is the number of modes extracted. If the
MODE parameter is used, the default value is LASTMODE=M, whereMis the value of theMODE
parameter.
MODE
This parameter applies only to Abaqus/Standard analyses.
This parameter is useful only during eigenvalue extraction for natural frequencies (“Natural
frequency extraction,” Section 6.3.5 of the Abaqus Analysis User’s Manual) and for eigenvalue
buckling estimation (“Eigenvalue buckling prediction,” Section 6.2.3 of the AbaqusAnalysisUser’s
Manual). Set this parameter equal to the first mode number for which output is required. The
default is MODE=1. When performing a *FREQUENCY analysis, the normalization will follow
the format set by the NORMALIZATION parameter. Otherwise, the normalization is such that the
largest displacement component in the mode has a magnitude of 1.0.
POSITION
This parameter applies only to Abaqus/Standard analyses.
Set POSITION=AVERAGED AT NODES if the values being written are the averages of
values extrapolated to the nodes of the elements in the set. Since variables can be discontinuous
between elements with different properties, Abaqus/Standard breaks the output into separate tables
for different element property definitions within the element set specified. Abaqus/Standard will
also output elements of differing types separately. Thus, averaging will occur only over elements
that contribute to a node that have the same type.
Set POSITION=CENTROIDAL if values are being written at the centroid of the element (the
centroid of the reference surface of a shell element, the midpoint between the end nodes of a beam
element).
Set POSITION=INTEGRATION POINTS (default) if values are being written at the
integration points at which the variables are actually calculated.
Set POSITION=NODES if the values being written are extrapolated to the nodes of each
element in the set but not averaged at the nodes.
REBAR
This parameter applies only to Abaqus/Standard analyses.
This parameter can be used to obtain output only for the rebar in the element set specified;
output for the matrix material will not be given. It can be used with or without a value. If it is used
without a value, the output will be given for all rebar in the element set. Its value can be set to the
name assigned to the rebar on the *REBAR option to specify output for that particular rebar in the
element set.

追问

*EL FILE, frequency=1
*Node FILE, frequency=1
*Node file
CF, U
*El file, position=nodes
S,这是我生成fil文件的关键字，您看能怎么改呢？
还有我的abaqus模型是一个轮辐，一个加载轴，一个连接盘导入patran后只剩下连接盘了，是不是patran不支持abaqus多体的导入？

追答

暂时我不是太确定这些关键字是否合适。你可否试着在ABAQUS里面把各个零件分别导出，然后在Patran里面分别导入。如果零件数量不多，这样子应该是可靠且可行的办法。

追问

刚才我发现轮辐附近时有节点的，而且全部选中之后发现有轮辐这个东西的，但是去掉选中之后就只剩下加载轴了，您知道怎么回事吗？