Free body diagram on moment and torsion

[marvincwl]

Homework Statement

It's not exactly a homework question, just want to see if i have the right concept in drawing free body diagrams

See attached Picture.
In case 1, the object is fastened on plane x-z and the rectangular block is fastened to the T-block in y-z plane.

Will the force be transferred to the block as it is in case 2?

Homework Equations

nil

The Attempt at a Solution

see attached picture. I think My1 would not be created?


Thanks alot. Help is much appreciated.

 

[aralbrec]

See attached Picture.
In case 1, the object is fastened on plane x-z and the rectangular block is fastened to the T-block in y-z plane.

Will the force be transferred to the block as it is in case 2?

No (I assume the forces are not directly applied to the block in case 1). The forces that exist between the block and the rest of the frame occur at the fasteners and the type of forces depends on what type of forces the fastener can exert. So if you break the block and frame apart, you would model the forces on the block as the forces exerted by the fasteners. Whether some component of the those external forces transmit to the block can be found out from the static equations.

 

[marvincwl]

No (I assume the forces are not directly applied to the block in case 1). The forces that exist between the block and the rest of the frame occur at the fasteners and the type of forces depends on what type of forces the fastener can exert. So if you break the block and frame apart, you would model the forces on the block as the forces exerted by the fasteners. Whether some component of the those external forces transmit to the block can be found out from the static equations.

If this is fastened in a random vibration machine and the fasteners used are socket head cap screws?

The fasteners will only create a compressive force at the threads and at the contact of the cap and the block? so the g-force from the vibration is not transferred??!