# Thread: Clamp force/tensile force due to torque consideration.

1. ## 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?  Reply With Quote

2. All exetrnal forces that create bolt tension and shearing should be evaluated.  Reply With Quote

3.  Reply With Quote

4. 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?  Reply With Quote

5. thanks for the source   Reply With Quote

bolt, clamp, fastener, force, structure 