Gear Noise and Vibration Episode 2 Part 8 docx

... y0 w1 h1" alt="" Recording and Storage 13 7 References 1. American Gear Manufacturers' Association. AGMA Standard 6000- A 88. 2. Dudley, D.W., Dudleys Gear Handbook, Ch 13 Gear vibration, McGraw-Hill, ... vibration. out ground ampl Fig. 8 .10 Former method of enveloping vibration signal. Recording and Storage 12 7 ampl 1 \f \ II /I I 1 max...

Ngày tải lên: 05/08/2014, 09:20

... Gear Handbook, Ch 13 Gear vibration, McGraw-Hill, New York, 19 92. 3. Newland, D.E.N., Random vibrations, spectral and wavelet analysis. Longman, Harlow, UK and Wiley, New York, 19 93. ... Storage 12 7 ampl 1 \f \ II /I I 1 maxfreq of interest N ' 1 1 i i i i 1 1 1 r i i i i i t 20 Hz T sample frequency filter characteristic 4kHz 5kHz frequency 15...

Ngày tải lên: 05/08/2014, 09:20

... Fig. 9. 12 ) with 19 :29 at input and 23 : 31 at output. For a complete meshing cycle the layshaft would have to do 19 x 31 revs and 589 revs would take rather a long time and require ... of waveform. Analysis Techniques 14 9 1 0.8 0.6 0.4 0 .2 0 -0 .2 -0.4 -0.6 -0.8 -1 6 8 window length L 10 12 Fig 9.7 Finite length records showing end effects....

Ngày tải lên: 05/08/2014, 09:20

... result is a small amplitude random "white noise& quot; vibration. Analysis Techniques 14 9 1 0.8 0.6 0.4 0 .2 0 -0 .2 -0.4 -0.6 -0.8 -1 6 8 window length L 10 12 Fig 9.7 Finite length records ... Fig. 9. 12 ) with 19 :29 at input and 23 : 31 at output. For a complete meshing cycle the layshaft would have to do 19 x 31 revs and 589 revs woul...

Ngày tải lên: 05/08/2014, 09:20

... contact. References 1. Newland, D.E.N., 'Random vibrations, spectral and wavelet analysis.' Longman, Harlow, UK and Wiley, New York, 1993. 2. Randall, R.B., 'Frequency ... as 2 jim rms the expected value of a low harmonic will be as high as 2V (2/ 32) which is 0.5 urn rms or 1.4 um p-p. 2. 5 V-1.5 10 20 30 40 50 harmonics of 1/rev 60 70 F...

Ngày tải lên: 05/08/2014, 09:20

... contact. References 1. Newland, D.E.N., 'Random vibrations, spectral and wavelet analysis.' Longman, Harlow, UK and Wiley, New York, 1993. 2. Randall, R.B., 'Frequency ... as 2 jim rms the expected value of a low harmonic will be as high as 2V (2/ 32) which is 0.5 urn rms or 1.4 um p-p. 2. 5 V-1.5 10 20 30 40 50 harmonics of 1/rev 60 70 F...

Ngày tải lên: 05/08/2014, 09:20

... (V2r2-Vlr2) + [k !2/ r2 2 ] (s2r2-slr2-te) = - F 23 [I3/r3 2 ] (A3.r3) + [D3/r3 2 ] (V3 r3) + [D34/r3 2 ] (V3r3-V4r3) + [k34/r3 2 ] (s3r3-s4r3) = - F 23 [I4/r4 2 ] (A4.r4) + [D4/r4 2 ] ... equations and take rl=r2 [Il/r2 2 ] (Al.r2) + [Dl/r2 2 ] (VI r2) + [D 12/ r2 2 ] (Vlr2-V2r2) + [k !2/ r2 2 ] (slr2-s2r2+te) - Q/r2 [I2/r2 2 ] (A2.r2...

Ngày tải lên: 05/08/2014, 09:20

... (V2r2-Vlr2) + [k !2/ r2 2 ] (s2r2-slr2-te) = - F 23 [I3/r3 2 ] (A3.r3) + [D3/r3 2 ] (V3 r3) + [D34/r3 2 ] (V3r3-V4r3) + [k34/r3 2 ] (s3r3-s4r3) = - F 23 [I4/r4 2 ] (A4.r4) + [D4/r4 2 ] ... equations and take rl=r2 [Il/r2 2 ] (Al.r2) + [Dl/r2 2 ] (VI r2) + [D 12/ r2 2 ] (Vlr2-V2r2) + [k !2/ r2 2 ] (slr2-s2r2+te) - Q/r2 [I2/r2 2 ] (A2.r2...

Ngày tải lên: 05/08/2014, 09:20

... 5*cos(1 .44 88 -(i-l)*0.1); yl(i) - 40 .7 84 - 5*sin(1 .44 88 -(i-l)*0.1); end fori=16:N; % involute ra = (i-16)*0. 02; xl(i) =40 .7 84* (sin(raHi-16)*0. 02* cos(ra)); yl(i) =40 .7 84* (cos(ra)+(i-16)*0. 02* sin(ra)); end for ... i=(N+l) :2* N ; % Image in x=0 other flank x2(i) = - xl (2* N+l-i); y2(i) - yl (2* N+l-i); rot 1=0 .45 413; xl(i) =x2(i)*cos(rotl) +y2(i)...

Ngày tải lên: 05/08/2014, 09:20

... 5*cos(1 .44 88 -(i-l)*0.1); yl(i) - 40 .7 84 - 5*sin(1 .44 88 -(i-l)*0.1); end fori=16:N; % involute ra = (i-16)*0. 02; xl(i) =40 .7 84* (sin(raHi-16)*0. 02* cos(ra)); yl(i) =40 .7 84* (cos(ra)+(i-16)*0. 02* sin(ra)); end for ... i=(N+l) :2* N ; % Image in x=0 other flank x2(i) = - xl (2* N+l-i); y2(i) - yl (2* N+l-i); rot 1=0 .45 413; xl(i) =x2(i)*cos(rotl) +y2(i)...

Ngày tải lên: 05/08/2014, 09:20

... alt="" Low Contact Ratio Gears 22 5 100 20 0 300 400 50 0 Fig 14 .2 Seven tooth gear meshing with rack. These highly loaded jacking gears work extremely slowly so noise is not a problem ... revolution Fig 15. 3 Line elimination and resynthesis to detect small changes. Condition Monitoring 23 9 at c c o 2 * 4> 0 U 0) Ê .*: (0 4) 0, n u -50 -100 - 150 -20 0...

Ngày tải lên: 05/08/2014, 09:20

... appeared it was often too late and a considerable number of 23 1 22 6 Chapter 14 50 100 150 20 0 25 0 Fig 14.3 Detail of contacts for seven tooth and rack. tip base pitch roll I purfe ... (brl*psil - brl*tan(phi2))/(pi*cos(phio)); r2 = (br2*psi2 - br2*tan(phi2))/(pi*cos(phio)); conratio = rl + r2; disp( f angle rl r2 contact ratio') disp([ phi2 rl...

Ngày tải lên: 05/08/2014, 09:20

... the pinion at position 2. So 8, = Fpi, + Fp 12 and 5 2 = Fp 12 + Fp 22 . As the transmission error is the sum of 81 and S 2 T.E. = F(p n +2p, 2 + p 22 ) giving F. Once F ... in Fig. 16. 3 and then add the results and the estimates of the tooth effects as discussed in section 16. 6. 16 .2 Hydraulic vibrators As electromagnetic vibrators...

Ngày tải lên: 05/08/2014, 09:20

... contact ratio gears curvature, 22 7 frequencies, 22 9 reasons, 22 3 shapes, 22 4 tip relief, 22 6 tip stresses, 22 7 Marker magnetic, 90 once per rev, 90 Matlab, 59 Mesh cycle, 1 32 stiffness, ... 44 Coupling gear tooth, 26 8 testing, 26 5 vibration, 26 6 Cracking vibrations, 23 5 Crest factor, 23 8 Crowning, 44 Current-voltage conversion, 83 Cycloi...

Ngày tải lên: 05/08/2014, 09:20

... contact ratio gears curvature, 22 7 frequencies, 22 9 reasons, 22 3 shapes, 22 4 tip relief, 22 6 tip stresses, 22 7 Marker magnetic, 90 once per rev, 90 Matlab, 59 Mesh cycle, 1 32 stiffness, ... 24 2 Force impact, 25 2 position variation, 32 radial bearing, 32 Fourier ideas, 1 42 fast, 143 Frequency analysis, 1 42 changing, 1 78 folding, 1 28 integrati...

Ngày tải lên: 05/08/2014, 09:20