Contact Force and Dynamic Behavior of Automobile Wiper Blade System

Abstract

Windscreen wiper vibration problem is now becoming one of the comforts and safety concerns because it can be annoying to the driver and passengers and also affect concentration of the driver while driving. This paper investigate the problems by measuring the wiper blade contact force and vibration level on laboratory wiper experimental rig and wiper system on two different sedan passenger cars operated similarly. In order to measure the vibration and contact force along the wiper blade, MMA7660 accelerometer and a thin film force sensor FSR was used. The contact force is measured at four points; Points 1 (inner tip), 2 (middle blade) and 3 (middle blade) and Point 4 (outer tip), along the wiper blade. Based on the measurement, it was found that the contact force is much higher at Points 1, Point 2 and Point 3 compared to Point 4. For vibration level, higher vibration is occurred at Points 2 and Point 3. It can be conclude that the bigger the contact force value act on windscreen the bigger for the vibration level to be produce. From this founding, further research can be conducted and tackle the problem at certain point along the wiper blade.

Determining the characteristics of contact interaction between the two-row windshield wiper and a curvilinear glass surface

“…Our results of the distribution of pressure on stresses testify to the solution of the problem of studying the interaction of the windshield wiper with the curved surface of the glass. In contrast to [2][3][4][5][6][7][8][9][10], in which variants of the absolute repeatability of the curvature of the windshield wiper and the glass surface are considered, the current research data demonstrate the application of other possible cases of operation.…”

“…The reviewed literature [2][3][4][5][6][7][8][9][10][15][16][17][18][19][20][21][22][23] does not sufficiently describe other variants of rubber blades, except for the traditional single-row one. A variant of the rubber blade with an additional row of individual brushes located at an angle has shown useful practical results.…”

“…A two-link analytical model is introduced to study the interaction of dynamic and static friction using a variable gap control method to accurately determine the timing and conditions of transients affecting the jump phenomenon. Work [10] investigates the vibrations of front windshield wipers and their impact on driving comfort and safety by measuring contact forces at different points along the blade of the brush. The results show higher force and vibration values in the inner and middle sections of the blade, highlighting areas for targeted improvement in future research.…”

“…The results show higher force and vibration values in the inner and middle sections of the blade, highlighting areas for targeted improvement in future research. Works [9,10] consider the angle of inclination of the glass, but do not provide data on the effect of changing the radius of curvature of the glass on the obtained reactions and pressure distribution. In reality, the increase in the curvature of the glass helps reduce the load on the wiper at the edges -the uniformity of its fit deteriorates.…”