Clamp force/tensile force due to torque consideration.

Hi,
I have calculate the clamp force, which mean that the tensile force acting on bolt when it clamped 2 or more surface together. Since the value of tensile force calculated is significantly higher. so I can't ignore it.

If a box fastened by bolts and the box experiencing forward/upward/downward acceleration on its c.g, does the reaction forces on y-axis of each bolt should be added or minus with the clamp/tensile force of the bolt?

All exetrnal forces that create bolt tension and shearing should be evaluated.

See:

[B][URL="http://www.engineersedge.com/torque.htm"]Bolt Torque Axial Force Calculator and Equation[/URL]

[URL="http://www.engineersedge.com/fastener_thread_menu.shtml"]Fastener, Bolt Screw Design Resources[/URL][/B]

is that mean, when my bolt is subjected to tensile force due to external force(e.g: object is having upward/downward acceleration), i have to add/minus the Clamp force with the reaction force on bolt due to upward acceleration;

Fc=clamp/tensile force due to tightening
Ac=reaction force due to upward/downward acceleration of object

Rc=Total reaction force acting in Y direction of the Bolt

Rc= Ac +_ Fc

is this correct?

thanks for the source :cool: