output中的restart requests：requency intervals是什么意思

wangjunjie0536

在output-restart requests里面所定义f得requency intervals是什么意思，有什么意义？

xuzhan8888

By default, no restart information is written for an Abaqus/Standard analysis and restart information is written only at the beginning and end of each step for an Abaqus/Explicit analysis. However, default restart requests are created automatically for every step in an analysis. The Edit Restart Requests dialog box, invoked by selecting OutputRestart Requests from the main menu bar in the Step module, allows you to specify how often you want the restart information to be written.
You can specify the frequency at which Abaqus writes data to the restart files; however, the behavior of restart differs between Abaqus/Standard and Abaqus/Explicit.
Abaqus/Standard
For an Abaqus/Standard analysis the frequency is in increments. In addition, Abaqus/Standard writes restart information at the end of the step regardless of whether the last increment corresponds to the specified frequency. By default, the frequency is set to zero, which means that Abaqus/Standard does not write any information to the restart files during the step.
Abaqus/Explicit
For an Abaqus/Explicit analysis the frequency is in time intervals. In addition, for an Abaqus/Explicit step you can choose whether the output is written at the exact time interval or at the closest approximation. However, you cannot avoid writing information to the restart files for Abaqus/Explicit steps; if you set the frequency to zero for an Abaqus/Explicit step, restart information will be written only at the end of the step.

roadheader

你这个参数是多少，它就把你这个分析步分为多少次输出。重启动时就按照输出的最后一次输出结果开始继续运算。

wangjunjie0536

3# roadheader
那后面得intervals就没有意义了吧？

wxlwinner

对于Abaqus/Explicit重启动分析，只能够设置intervals，即分析总会输出分析步结束时刻的重启动数据
对于Abaqus/Standard重启动分析，intervals和frequency只能够设置一个。

jian4dan

frequency是定义变量（如位移，应力等）输出频率，frequency＝1表示每个子步（increment）输出一次变量，frequency＝2表示每两个子步输出一次。而time interval＝n表示将一个step分成n个等分，如果参数time mark=yes，变量严格在均分的时间点处输出，如果参数time mark=no，变量在均分的时间点后的一个increment结束时输出，increment的大小可能和计算的收敛性有关

arthas

还有一个吧，overlay是只输出最后一步结果。

ahaen

jian4dan 发表于 2011-5-12 15:18
frequency是定义变量（如位移，应力等）输出频率，frequency＝1表示每个子步（increment）输出一次变量，fr ...

均分的时间点与increment不同时，abaqus怎么处理呢，是进行内插或外推吗？帮助文件中没找到相关说法呢

天大结构26

警告中出现这种提示：Output variable s33 is not a valid component in this analysis for element type spring2

焕然一心881221

http://forum.simwe.com/forum.php ... p;highlight=restart这里面将的非常详细，精辟。我也是初学者，望和您交流，方便的话：1985217301