Abstract: To effectively suppress contactor bounce during closure, this study utilizes 3D printing and melt infiltration to fabricate Cu-W contact materials with cubic (CB) and rhombic dodecahedron (RD) three-dimensional interpenetrating structures. The bounce mechanism is analyzed through material structural parameters and vibration absorption characteristics. Applying Hertz contact theory and its extensions, we investigate energy loss during contact collisions while testing stress-strain curves and damping properties of three Cu-W contact types. Using a specialized bounce detection apparatus, we capture closing bounce trajectories for different structural contacts under varying parameters. A detailed contactor model evaluates bounce suppression performance among the Cu-W structures. Results demonstrate that structural modifications alter the contacts' mechanical and damping properties, with RD-structured Cu-W contacts exhibiting superior performance: higher damping coefficients, greater compressive deformation, enhanced internal friction, and excellent energy absorption capacity that effectively dissipates collision energy to minimize bounce. Consequently, RD-structured Cu-W contacts achieve optimal anti-bounce performance during high-speed closure. Implementing RD-structured Cu-W contacts significantly suppresses contact bounce, thereby improving contactor reliability and operational lifespan.