The Translational Hardstop component represents a double-sided translational mechanism that restricts the motion to a set length. The mechanism is assumed to be in the center of this region so that the solid connector, ${\mathrm{flange}}_a$, is attached to the center of the gap, and the hollow connector, ${\mathrm{flange}}_b$, is attached to the frame that is moving back and forth.

The hardstop is modeled as a stiff spring-damper. The compliance of the mechanism can be controlled by adjusting the stiffness ($c$) and damping ($d$) coefficients in the component parameters.

$s_{\mathrm{rel}}\=s_b-s_a{v}_{\mathrm{rel}}\={\stackrel{\.}{s}}_{\mathrm{rel}}$

$F\&equals;F_b\&equals;-F_a\&equals;\{\begin{array}{cc}\{\begin{array}{cc}c\left(s_{\mathrm{rel}}-\frac{b}{2}\right)\&plus;d{v}_{\mathrm{rel}}& s_{\mathrm{rel}}\&gt;\frac{b}{2}\\ c\left(s_{\mathrm{rel}}\&plus;\frac{b}{2}\right)\&plus;d{v}_{\mathrm{rel}}& s_{\mathrm{rel}}<\frac{b}{2}\\ 0& \mathrm{otherwise}\end{array}& b\&gt;2{10}^{\mathrm{-10}}\\ c{s}_{\mathrm{rel}}\&plus;d{v}_{\mathrm{rel}}& \mathrm{otherwise}\end{array}$