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035 _a.b12151336
099 9 _aAIT Thesis no.AE-10-03
100 1 _aShinde, Vikramsinh Sampatrao
245 1 0 _aModeling tractive performance of cage wheels by dimensional analysis technique
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2010
300 _a97 p. :
_bill.
490 1 _aThesis ;
_vno. AE-10-03
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Agricultural Systems and Engineering
502 _aThesis (M.Eng.) - Asian Institute of Technology, 2010
520 _aThree cage wheels of diameter 0.86 m, 0.96 m and 1.06 m were used. Width of wheel and lug angle was kept constant at 30 cm and 300 respectively. Number of lugs were varied with respect to the diameter of cage wheel and were 12, 13 and 14 for 0.86 m, 0.96 m and 1.06 m respectively. Experiments were conducted in three moisture conditions of 45.85% d.b., 51.60% d.b. and 57.21% d.b. The slip was varying from 25%, 30% to 35%. Instrumentation system was developed and used to carry out experiments. Data were analyzed to observe the force behavior of cage wheel operated in above mentioned soil conditions and cage wheel dimensions. The empirical equations regarding the tractive performance of cage wheel were predicted by using dimensional analysis technique. The data were further analyzed by multiple regression analysis to study the parameters influencing the tractive performance of the cage wheel. Highest pull forces 700.93 N were obtained for 0.96 m diameter cage wheel at 35% slip for lower moisture. Least pull force 115.55 N was generated by 1.06 m diameter cage wheel at all slips compared to other two cage wheels. Highest lift forces 4241.97 N were generated by 0.96 m diameter cage wheel at 35% slip and least lift forces were generated by 1.06 m diameter cage wheel. Highest tractive efficiency 66.39% was observed for 0.86 m diameter cage wheel at 45.85% d.b. moisture content and 30% slip. Lowest tractive efficiency 15.29% was noted for 1.06 m diameter cage wheel at 45.85% d.b. moisture level. The 0.86 m diameter cage wheel obtained maximum drawbar power 389.26 W at 30% slip and 45.85% d.b. moisture content. Dimensional analysis showed influence of clay number, diameter, linear lug spacing, angular lug spacing of cage wheel and height of lug on tractive performance of cage wheels. But the influence of Froude{u2019}s number on the tractive performance was negligible. Multiple regression analysis showed that pull number was least influenced by system parameters. Among the cage wheel parameters axle load was one which affects the performance of cage wheel. Slip was the most influencing parameter on the tractive efficiency of cage wheels.
650 0 _aWheels
_xPerformance
700 1 _aSoni, Peeyush,
_eChairperson
700 0 _aAthapol Noomhorm,
_eExamination Committee
700 0 _aRoongruang Kalsirisilp,
_eExamination Committee
710 2 _aThailand (HM Queen),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. AE-10-03
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B06093
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_tAbstract--AIT Thesis no.AE-10-03
_vn
945 _lmnait
945 _lmnait
942 _c20
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