mItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_s_p_h_1_1solid__dynamics_1_1_spring_on_surface_particles.html">SPH::solid_dynamics::SpringOnSurfaceParticles</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Exerts spring force force on the surface in the form of acceleration to each particle. The input stiffness should be defined in Pa/m. The stiffness is scaled by the surface area of the parti