Shear resistance is hard to explain. Shearing is different from folding, but similar. Smith Micro defines it as "how much the cloth tends to retain its shape as it folds." I think of it as more the resistance to buckling or crinkling. 

The picture above is all the base settings that come with the chemise, save for the Shear Resistance, which I have set to 1. It surprisingly doesn't look all that bad, but when you compare it to the base settings above, you can see that the folds are less defined...they start to buckle and crumple in places. 

 

Zaarin, I might do that one of these days...I spin, knit, and sew IRL, so I kind of soak up fiber knowledge, ehehehe. I'll have to do lots of tests with parameter combinations, though. All scientific-like. ^_~

花 | 美 | 花美 | 花火 
...It's a pun.