Charles,
Here is a response from PTC technical support engineering. This will give you xyz resultants for shear loads, and then you will have to figure out the direction. PTC does not have shear direction out-of-the-box.
"I did not find any official/supported method to achieve this with standard exposed functionality, but I found an environment variable (not documented & not something technical support supports) that might help. Try adding MECH_BOLT_COMP_OUTPUT environment variable (figures out the force components in the bolt) set to TRUE, rerun, and check the PAS file (Checkpoints tab in Run Status window). You will see something along these lines:"
Fastener2_shear_force-x (local) -1.386979e-01
Fastener2_shear_force-y (local) -4.986981e+01
Fastener2_shear_force-z (local) -4.984188e+01
Fastener2_shear_force-x (WCS) -4.986981e+01
Fastener2_shear_force-y (WCS) 1.386979e-01
Fastener2_shear_force-z (WCS) -4.984188e+01
Fastener4_shear_force-x (local) -3.724828e-02
Fastener4_shear_force-y (local) -5.013019e+01
Fastener4_shear_force-z (local) -5.015812e+01
Fastener4_shear_force-x (WCS) -5.013019e+01
Fastener4_shear_force-y (WCS) 3.724828e-02
Fastener4_shear_force-z (WCS) -5.015812e+01
"I also found MECH_PRINT_INTERFACE_MEAS that can be set to YES (TRUE might also work) and will output interface values (not bolt values). I discovered it in this article: https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS148379
This might be handy if you have Frictionless Interface unchecked in the fastener definition so that the interface carries some of the shear instead of just the fastener.
Here is example PAS output with one of my fasteners having frictionless interface and another not having it enabled:"
Fastener2_shear_force-x (local) -1.983851e-01
Fastener2_shear_force-y (local) -4.056583e+01
Fastener2_shear_force-z (local) -4.053955e+01
Fastener2_shear_force-x (WCS) -4.056583e+01
Fastener2_shear_force-y (WCS) 1.983851e-01
Fastener2_shear_force-z (WCS) -4.053955e+01
Fastener4_shear_force-x (local) -1.627074e-01
Fastener4_shear_force-y (local) -2.522337e+00
Fastener4_shear_force-z (local) -2.572929e+00
Fastener4_shear_force-x (WCS) -2.522337e+00
Fastener4_shear_force-y (WCS) 1.627074e-01
Fastener4_shear_force-z (WCS) -2.572929e+00
Begin Contact Pressure Calculations Wed Aug 13, 2014 15:41:28
Fastener ID: 47638 (Load Set Number: 1)
Total Compressive Force: -99.6407
Total Tensile Force: 99.7975
Total Area in Compression: 0.297238
Total Area in Tension: 0.29178
Total Bending Moment in Dir-1: 49.3189
Total Bending Moment in Dir-2: 49.5866
Total Shear Force in Dir-1: -56.8875
Total Shear Force in Dir-2: 56.9118
Total torsional Moment: -148.092
Fastener ID: 47630 (Load Set Number: 1)
Total Compressive Force: -98.4342
Total Tensile Force: 98.6385
Total Area in Compression: 0.292075
Total Area in Tension: 0.296987
Total Bending Moment in Dir-1: 47.591
Total Bending Moment in Dir-2: 47.1749