stress output

[blackard]

I am trying to record the stress in a quad element,
or output to a file in some manner.
The recorder commands I have used are:

recorder Element -file Q4stress.out -ele 1 stress

which gives a blank output file

recorder Element -file Q4stress.out -ele 1 Stress

which also gives a blank output file

I also use the command

print ele

This does give some interesting and useful information, but
the stresses are all zero, even with sizable loads on a small element.

How exactly can I record, or otherwise output, the stresses in a quad element to a file?

[silvia]

according to the manual:

The valid queries to a Quad element when creating an ElementRecorder object are 'force,' 'stiffness,' and 'material $matNum matArg1 matArg2 ...' Where $matNum refers to the material object at the integration point corresponding to the node numbers in the isoparametric domain.

[blackard]

I guess I can assume that we cannot see the stress results for the quad element? Is this correct?