- #1

LuigiL

- 2

- 1

- Homework Statement
- Determine the forces acting on the hand tool (magnitude & direction).

- Relevant Equations
- ΣF = 0, ΣM = 0

Hello,

I' m trying to make a linear static analysis (Finite Element Analysis) on the following hand tool. I want to determine the boundary conditions. In order to do that I have decided to use a force couple to represent the forces that a bolt exerts on the jaws of this spanner.

Despite using force and moment equilibrium, I' m not able to determine the magnitude and direction of the forces.

Should I include any other forces in order to satisfy the equilibrium (maybe a force R in the lower jaw)?

I would be grateful if you can give me some advice. Thank you.

## M_O = F_1 \cdot d, ~ \text{&} ~ F_1=F_2 ##

## \Sigma M_O = 0,~ 144.93 \cdot F_3-M_O = 0,~ M_O = 14493 ~N \cdot mm. ##

## \Sigma F_x = 0,~ F_{3x} - R_x=0,~ R_x = F_3 \cdot sin(14.31^\circ). ##

## \Sigma F_y = 0,~ F_{3y} - R_y=0,~ R_y = F_3 \cdot cos(14.31^\circ). ##

I' m trying to make a linear static analysis (Finite Element Analysis) on the following hand tool. I want to determine the boundary conditions. In order to do that I have decided to use a force couple to represent the forces that a bolt exerts on the jaws of this spanner.

Despite using force and moment equilibrium, I' m not able to determine the magnitude and direction of the forces.

Should I include any other forces in order to satisfy the equilibrium (maybe a force R in the lower jaw)?

I would be grateful if you can give me some advice. Thank you.

## M_O = F_1 \cdot d, ~ \text{&} ~ F_1=F_2 ##

## \Sigma M_O = 0,~ 144.93 \cdot F_3-M_O = 0,~ M_O = 14493 ~N \cdot mm. ##

## \Sigma F_x = 0,~ F_{3x} - R_x=0,~ R_x = F_3 \cdot sin(14.31^\circ). ##

## \Sigma F_y = 0,~ F_{3y} - R_y=0,~ R_y = F_3 \cdot cos(14.31^\circ). ##

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