4.7.1.3.4. Force
Marker in { } is optional. The marker name is defined as follow:
(m1, m2,{m3}) : (bodyname.markername,bodyname.markername,{bodyname.markername}).
m1 becomes action marker and m2 becomes base marker.
If m3 is defined, m3 becomes reference marker.
4.7.1.3.4.1. FM
The FM function returns the absolute value of a translational force by using two markers with a force or joint entity.
Format
FM(Marker1{, Marker2})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Formulation
\(\text{FM}={{\left( ^{\text{(mk2)}}{{{\vec{F}}}_{\text{mk1}}}{{\cdot }^{\text{(mk2)}}}{{{\vec{F}}}_{\text{mk}1}}\, \right)}^{1/2}}\)
\(^{\text{(mk2)}}{{\vec{F}}_{\text{mk}1}}\): Force vector from Marker2 to Marker1
Example
4.7.1.3.4.2. FX
The FX function returns the force value, calculated using two markers with a force or joint entity, in the x-direction of a standard marker.
Format
FX(Marker1{, Marker2}{, Marker3})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Marker3 |
|
Formulation
\(\text{FX}{{\text{=}}^{(\text{mk2})}}{{\vec{F}}_{\text{mk}1}}\cdot {\hat{x}}_{\text{mk3}}\)
\(^{\text{(mk2)}}{{\vec{F}}_{\text{mk}1}}\): Force vector from Marker2 to Marker1
\({\hat{x}}_{\text{mk3}}\): x-direction unit vector of Marker3
Example
4.7.1.3.4.3. FY
The FY function returns the force value, calculated using two markers with a force or joint entity, in the y-direction of a standard marker.
Format
FY(Marker1{, Marker2}{, Marker3})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Marker3 |
|
Formulation
\(\text{FY}{{\text{=}}^{(m\text{k2})}}{{\vec{F}}_{\text{mk}1}}\cdot {\hat{y}}_{\text{mk3}}\)
\(^{\text{(mk2)}}{{\vec{F}}_{\text{mk}1}}\): Force vector from Marker2 to Marker1
\({\hat{y}}_{\text{mk3}}\): y-direction unit vector of Marker3
Example
4.7.1.3.4.4. FZ
The FZ function returns the force value, calculated using two markers with a force or joint entity, in the z-direction of a standard marker.
Format
FZ(Marker1{, Marker2}{, Marker3})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Marker3 |
|
Formulation
\(\text{FZ}{{\text{=}}^{(\text{mk2})}}{{\vec{F}}_{\text{mk}1}}\cdot {\hat{z}}_{\text{mk3}}\)
\(^{\text{(mk2)}}{{\vec{F}}_{\text{mk}1}}\): Force vector from Marker2 to Marker1
\({\hat{z}}_{\text{mk3}}\): z-direction unit vector for Marker3
Example
4.7.1.3.4.5. TM
The TM function returns the absolute value of the torque force between two markers with a force or joint entity.
Format
TM(Marker1{, Marker2})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Formulation
\(\text{TM}={{\left( ^{(\text{mk2})}{{{\vec{T}}}_{mk2}}{{\cdot }^{\text{(mk2)}}}{{{\vec{T}}}_{\text{mk}1}}\, \right)}^{1/2}}\)
\(^{\text{(mk2)}}{{\vec{T}}_{\text{mk}1}}\): Torque vector from Marker2 to Marker1
Example
4.7.1.3.4.6. TX
The TX function returns the torque force between two markers with a force or joint entity measured along the x-axis of a standard marker.
Format
TX(Marker1{, Marker2}{, Marker3})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Marker3 |
|
Formulation
\(\text{TX}{{\text{=}}^{\text{(mk2)}}}{{\vec{T}}_{\text{mk1}}}\cdot {\hat{x}}_{\text{mk3}}\)
\(^{\text{(mk2)}}{{\vec{T}}_{\text{mk1}}}\): Torque vector from Marker2 to Marker1
\({\hat{x}}_{\text{mk3}}\): x-direction unit vector of Marker3
Example
4.7.1.3.4.7. TY
The TY function returns the torque force between two markers with a force or joint entity measured along the y-axis of a standard marker.
Format
TY(Marker1{, Marker2}{, Marker3})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Marker3 |
|
Formulation
\(\text{TY}{{\text{=}}^{\text{(mk2)}}}{{\vec{T}}_{\text{mk1}}}\cdot {\hat{y}}_{\text{mk3}}\)
\(\text{TY}{{\text{=}}^{\text{(mk2)}}}{{\vec{T}}_{\text{mk1}}}\): Torque vector from Marker2 to Marker1
\({\hat{y}}_{\text{mk3}}\): y-direction unit vector of Marker3
Example
4.7.1.3.4.8. TZ
The TZ function returns the torque force between two markers with a force or joint entity measured from the z-axis of a standard marker.
Format
TZ(Marker1{, Marker2}{, Marker3})
Arguments definition
Marker1 |
The name or argument number of a force to be measured, joint entity action, or base marker |
Marker2 |
The name or argument number of a force to be measured, joint entity action, or base marker (not Marker1) |
Marker3 |
|
Formulation
\(\text{TY}{{\text{=}}^{\text{(mk2)}}}{{\vec{T}}_{\text{mk1}}}\cdot {\hat{z}}_{\text{mk3}}\)
\(^{\text{(mk2)}}{{\vec{T}}_{\text{mk1}}}\): Torque vector from Marker2 to Marker1
\({\hat{z}}_{\text{mk3}}\): x-direction unit vector of Marker3
Example