29.7.1. Fixed Connector

Figure 29.94 Fixed Connector property page [Characteristics page]

The fixed connector generates the following force and torque applied to the action marker:

\(\begin{aligned} & \left[ \begin{matrix} {{F}_{ax}} \\ {{F}_{ay}} \\ {{F}_{az}} \\ {{T}_{ax}} \\ {{T}_{ay}} \\ {{T}_{az}} \\ \end{matrix} \right]=-\left[ \begin{matrix} {{K}_{TRA}} & 0 & 0 & 0 & 0 & 0 \\ 0 & {{K}_{TRA}} & 0 & 0 & 0 & 0 \\ 0 & 0 & {{K}_{TRA}} & 0 & 0 & 0 \\ 0 & 0 & 0 & {{K}_{ROT}} & 0 & 0 \\ 0 & 0 & 0 & 0 & {{K}_{ROT}} & 0 \\ 0 & 0 & 0 & 0 & 0 & {{K}_{ROT}} \\ \end{matrix} \right]\left[ \begin{matrix} {{x}^{k1}} \\ {{y}^{k2}} \\ {{z}^{k3}} \\ \theta _{ab1}^{l1} \\ \theta _{ab2}^{l2} \\ \theta _{ab3}^{l3} \\ \end{matrix} \right]-\left[ \begin{matrix} {{C}_{TRA}} & 0 & 0 & 0 & 0 & 0 \\ 0 & {{C}_{TRA}} & 0 & 0 & 0 & 0 \\ 0 & 0 & {{C}_{TRA}} & 0 & 0 & 0 \\ 0 & 0 & 0 & {{C}_{ROT}} & 0 & 0 \\ 0 & 0 & 0 & 0 & {{C}_{ROT}} & 0 \\ 0 & 0 & 0 & 0 & 0 & {{C}_{ROT}} \\ \end{matrix} \right]\left[ \begin{matrix} {{V}_{x}}^{m1} \\ {{V}_{y}}^{m2} \\ {{V}_{z}}^{m3} \\ \omega _{ab1}^{n1} \\ \omega _{ab2}^{n2} \\ \omega _{ab3}^{n3} \\ \end{matrix} \right] \\ & \\ & {{F}_{b}}=-{{F}_{a}} \\ & {{T}_{b}}=-{{T}_{a}}-L\times {{F}_{a}} \\ \end{aligned}\)

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Note

In RecurDyn/Solver, Rotation stiffness and damping coefficients are converted into radian although model unit is defined in degree. When the user define the values which they are in radian, the user must change an angle unit as radian in general tab of Properties of Fixed dialog box.