单元输出问题的一个方法！
通常，我们输出单元应力应变的时候，默认的是单元积分点上的，但是有的时候我们可能会需要中点、节点的值，那么可以通过参数的选取简单的实现这个要求，而不需要自己去编制小程序去进行插值了（因为我曾经就遇到过这个问题）.方法如下，仅供大家参考：Set POSITION=AVERAGED AT NODES if the values being printed are the averages of values extrapolated to the nodes of the elements in the set. Since variables may 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 printed 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 printed 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. 还没有试过。
谢谢分享啊。 对于一个八节点四个积分点的平面单元
用POSITION=INTEGRATION POINTS (default)计算的结果：
ELEMENTPT FOOT- EP1 EP2
NOTE
75 1 -1.7197E-042.9731E-04
75 2 -5.6155E-044.4613E-05
75 3 -3.6136E-047.1631E-04
75 4 -7.2594E-04 -8.9712E-05
MAXIMUM -1.7197E-047.1631E-04
ELEMENT 75 75
MINIMUM -7.2594E-04 -8.9712E-05
ELEMENT 75 75
用POSITION=NODES 计算的结果：
THE FOLLOWING TABLE IS PRINTED AT THE NODES FOR ELEMENT TYPE CPS8R AND ELEMENT SET
ASSEMBLY_ELEMENT7
ELEMENT ND FOOT- SP1 SP2
NOTE
212 707 -1.840 3.818
212 709 -2.305 4.594
212 753 -1.490 10.89
212 751 -14.32 6.142
212 708 0.6116 1.522
212 732 1.344 4.500
212 752 -1.714 2.326
212 731 -5.267 2.168
MAXIMUM 1.344 10.89
ELEMENT 212 212
MINIMUM -14.32 1.522
ELEMENT 212 212
可见，对于应力应变要求精细的情况下，这个输出方法非常的实用 感谢分享
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