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  • CHAPTER 1 Introduction .....................................................................................1 1.1 Motivation and objectives of the thesis…………….………..…..….........…….1 1.2 Structure of the dissertation.........................................................................3 CHAPTER 2 State of the Art………………………………………………...………....4 2.1Water hydraulic seal.....................................................................................4 2.2Fundamental tribology..................................................................................7 2.3Experimental Investigation...........................................................................15 2.4Simulation....................................................................................................19 CHAPTER 3 Test setup........................................................................................21 3.1Tribometer test rig........................................................................................21 3.2Setup for experimental investigation with rubber block……….........………...24 3.3Setup for experimental investigation with a hydraulic seal………........……..32 3.4Setup for Simulation………………………………………………..…................37 CHAPTER 4Friction characteristics of the rubber block………………..…...….38 4.1Influences on friction characteristic…………………………….…...........…….39 4.2Test configuration and analysis of measured data…………………..............42 4.3Results of experiments................................................................................44 4.4Summary ……………………………………………….……………..............….58 CHAPTER 5Experimental investigation with hydraulic seals……………….…..60 5.1Test configuration…………………………………………………….................60 5.2Result of experimental investigation ………………………….............………64 5.3Summary…………………………………………………………..............…..….82 CHAPTER 6Simulation…………………………………………….......……….…..83 6.1 Contact model………………………………………………….............………..83 6.2 Results of simulation……………………………………….…….............….…..85 6.3Wear equation………………………………………………….............……...…94 6.4Summary ………………………………………………………...............………102 CHAPTER 7 Conclusions and Recommendations …………….…………………..104 7.1Summary and conclusion ……………………………………..................……104 7.2Recommendations…………………….………………………............…….….108 References………………………………………………...…………….....……...…..109