ABAQUS显隠转换分析

2019-08-31 15:15

.2.1 Transferring results between Abaqus analyses: overview

Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE

References

? “Transferring results between Abaqus/Explicit and Abaqus/Standard,” Section 9.2.2

? “Transferring results from one Abaqus/Standard analysis to another,” Section 9.2.3

? “Transferring results from one Abaqus/Explicit analysis to another,” Section 9.2.4

? ? ? ? ? ?

*IMPORT *IMPORT ELSET *IMPORT NSET *IMPORT CONTROLS *INSTANCE

“Transferring results between Abaqus analyses,” Section 16.6 of the Abaqus/CAE User's Manual

Overview

Abaqus provides the capability to import a deformed mesh and its associated material state from Abaqus/Standard into Abaqus/Explicit and vice versa. This

capability is particularly useful in manufacturing problems; for example, the entire sheet metal forming process (which requires an initial preloading, forming, and subsequent springback) can be analyzed. In this case the initial preloading can be simulated with Abaqus/Standard using a static procedure and the subsequent forming process can be simulated with Abaqus/Explicit. Finally, the springback analysis can be performed with Abaqus/Standard.

Abaqus also provides the capability to transfer desired results and model information from an Abaqus/Standard analysis to a new Abaqus/Standard analysis or from an Abaqus/Explicit analysis to a new Abaqus/Explicit analysis, where additional model definitions may be specified before the analysis is continued. For example, during an assembly process an analyst may first be interested in the local behavior of a particular component but later is concerned with the behavior of the assembled product. In this case the local behavior can first be analyzed in an Abaqus/Standard or Abaqus/Explicit analysis. Subsequently, the model information and results from this analysis can be transferred to a second Abaqus/Standard or Abaqus/Explicit analysis, where additional model definitions for the other components can be specified, and the behavior of the entire product can then be analyzed.

For this capability to work, the same release of Abaqus/Explicit and Abaqus/Standard must be run on computers that are binary compatible.

ABAQUS可以从隐式计算结果到显示计算进行分析,,该问题在求解一些问题是非常有用的,例如薄钢的锻造过程(经历预加载,成形和回弹),该分析预加载可以通过std分析,锻造过程可以通过XPT进行分析,最后回弹可以再用std进行分析。ABAQUS也提供了从隐式分析到隐式分析和从显示分析到显示分析,例如可以先对感兴趣的局部构件进行分析,分析完成后,在对整个结构作分析,前部的分析结果可以传到后面的整体分析中。

Saving the analysis results

The restart files from the original analysis contain the analysis results that are transferred from Abaqus/Standard or Abaqus/Explicit. Obtaining restart files is described in more detail in “Writing restart files” in “Restarting an analysis,” Section 9.1.1; brief summaries are provided below. By default, Abaqus/Standard does not write any restart information and Abaqus/Explicit writes results at the beginning and end of each step.

Saving results from Abaqus/Standard

If the results are to be imported from an Abaqus/Standard analysis, the results from the original Abaqus/Standard job must be written to the restart (.res), analysis database (.mdl and .stt), part (.prt), and output database (.odb) files. You can specify the increments at which restart information will be written. Restart information is

always written at the end of a step in addition to the requested increments whenever you request restart data in Abaqus/Standard.

Input File Usage: *RESTART , WRITE, FREQUENCY=n

保存分析结果

重启动文件包含了之前分析的信息,关于重启动的描述参阅“Writing restart files” in “Restarting an analysis,” Section 9.1.1;下面做简要介绍,默认情况下,std不保存重启动文件,xpt在每个分析部开始和结束步保存重启动文件。

Std结果保存

如果想从std分析后获得结果,原始的std分析必须保留重启文件(.res),分析数据(.mdl and .stt),PART(.prt),和输出数据(.odb)文件,用户可以指定具体的重启位置,重启信息除了在请求的位置输出外在每一分析步的最后也将输出。

Input File Usage: *RESTART , WRITE, FREQUENCY=n Abaqus/CAE Usage: Xpt结果保存

如果想要从某一时刻输入xpt分析的结果,则必须在原始的结果文件中保存.abq状态文件,状态文件重启文件数据文件,PART文件和结果文件共同用来从xpt分析后的结果作为输入。 可以具体指定是否精确的时间输出xpt重启文件,因为xpt会在每个分析步的最后给出重启文件。

Step module: Output

Restart Requests: enter n in the

Frequency column for each step

Input Usage:

File Use the following option to request results at the increments ending

immediately after each time interval:

*RESTART, WRITE, NUMBER INTERVAL=n, TIME MARKS=NO

Use the following option to request results at the exact time intervals:

*RESTART, WRITE, NUMBER INTERVAL=n, TIME MARKS=YES

Abaqus/CAE Step module: OutputUsage:

Restart Requests: enter n in the Number

Interval column; click to check the Time Marks column for each step if you want the results written at the exact time intervals

Saving results from Abaqus/Explicit

If the results are to be imported from an Abaqus/Explicit analysis, the results from the original Abaqus/Explicit job must be written to the state (.abq) file at the time when transfer of the state of the deformed body is required. The state (.abq), restart (.res), analysis database (.stt), package (.pac), part (.prt), and output database (.odb) files will be used for importing the results from Abaqus/Explicit.

You can specify whether the results are to be written at the exact time dictated by the specified time interval, n, during a step of an Abaqus/Explicit analysis or at the increment ending after the time dictated by the specified time interval. Results are


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