Dry friction

Friction is a key factor in mechanical engineering. Static friction needs to be adequate to fix components to each other, such as parking brakes, self-locking threads and frictionally engaged connections. Dynamic friction needs to be kept as low as possible, such as on bearings, in guideways or in shaping tools. Consequently, great attention is paid to the topic in engineering mechanics, and understanding of it is enhanced by clearly laid-out experiments.

• mechanical friction between 2 solid bodies
• friction body stationary, friction plate in a moving carriage
• 2 friction bodies each with 2 different surfaces
• 3 friction plates with a total of 4 different surfaces
• carriage driven by cable pulley and motor
• 2 driving velocities via a graduated cable drum
• force measuring unit: force gauge and adjustable air damper
• force measuring unit height-adjustable
• lines of action of friction force and tensile force always parallel
• adjustable air damper – with damping: measurement of a mean friction force adjusted by disturbances, without damping: slip/stick effects measurable
• storage system to house all parts