APPLIED MECHANICS LABORATORY REPORT Title: The speedup of a geared placement Aim: To jump taboo the possibleness on the prediction of the motion of rotors connected by gears. Object: The main object of the experiment is: Â Â Â Â Â Â Â Â To investigate the theory on the prediction of the motion of rotors connected by the gears. Â Â Â Â Â Â Â Â By the locomote weight method to evaluate the inertia on all(prenominal) shaft. Â Â Â Â Â Â Â Â Determine the equivalent inertia of the system at the appetiser shaft, by the fall weight method. Test rig understand: The add of teeth on all(prenominal) gear: N =90, N =30, N =90, N =90 Theory: In order to evaluate the equivalent inertia on to each one shaft by the Falling Weight method. The melt frame diagrams reveal: P*R=I*a+Tf Should be a straight line graph of P*R plotted against a. The intercept should give the friction torque. Measure the time taken for the mass to fall through Im then a=2s * m then ?= a (rad/ indorsementond gear^2) t^2 s^2 R Also P=m*g-m*a=m[9.81-a] Nt And for the calculation of snatch of inertia of the system referred to shaft1 we social function: Ieqv= I1+I2*[Na] ^2+I3 [Na*Nc] ^2 Nb Nb Nd map: 1. Â Â Â Â Â Â Â Â Determine, by the falling weight method the moments of inertia associated with each of the idiosyncratic shafts. 2. Â Â Â Â Â Â Â Â Assemble the system so that the gears meshed. 3. Â Â Â Â Â Â Â Â Determine by the falling weight method the equivalent inertia of the system at the fist shaft. 4. Â Â Â Â Â Â Â Â Compare the equivalent inertia with the a priori development the equation: Sample Calculations: M=F = 1=0.101 Kg g 9.81 a=2s= 2*1 =0.0154 m/sec^2 t^2 11.38^2 P=m(9,81-a)=0.
101*(9.81-0.0154)=0.999 Nt P*R1= 0.999*0.019=0.0190 Nt*m ?= a = 0.0154 =0.8105 rad/sec^2 R 0.019 Table of results: Shaft 1 R=0.031 m S=1 m W(Nt) Â Â Â Â Â Â Â Â t(sec) Â Â Â Â Â Â Â Â a(m/sec^2) Â Â Â Â Â Â Â Â P(Nt) Â Â Â Â Â Â Â Â Pr(N*m) Â Â Â Â Â Â Â Â ?(rad/sec^2) 1 Â Â Â Â Â Â Â Â 11.17 Â Â Â Â Â Â Â Â 0.016 Â Â Â Â Â Â Â Â 0.999 Â Â Â Â Â Â Â Â 0.031 Â Â Â Â Â Â Â Â 0.517 2 Â Â Â Â Â Â Â Â 6.99 Â Â Â Â Â Â Â Â 0.041 Â Â Â Â Â Â Â Â 1.993 Â Â Â Â Â Â Â Â 0.062 Â Â Â Â Â Â Â Â 1.322 3 Â Â Â Â Â Â Â Â 4.51 Â Â Â Â Â Â Â Â 0.098 Â Â Â Â Â Â Â Â 2.972 ... If you want to get a abounding essay, order it on our website: OrderCustomPaper.com
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