Admin مدير المنتدى
عدد المساهمات : 19002 التقييم : 35506 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
| موضوع: كتاب Gear Noise and Vibration الجمعة 04 مايو 2012, 5:26 pm | |
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أخوانى فى الله أحضرت لكم كتاب
Gear Noise and Vibration J Derek Smith
ويتناول الموضوعات الأتية :
Gearbox internal responses External responses Overall path to noise TE-noise relationship References Harris Mapping for Spur Gears Elastic deflections of gears Reasons for tip relief Unloaded TE for spur gears Effect of load on TE Long, short or intermediate relief References Theoretical Helical Effects Elastic averaging of TE Loading along contact line Axial forces Position variation "Friction reversal" and "contact shock" effects No-load condition References Prediction of Static TE Possibilities and problems Thin slice assumptions Tooth shape assumptions Method of approach Program with results Accuracy of estimates and assumptions Design options for low noise References Contents Prediction of Dynamic Effects Modelling of gears in -D Time marching approach Starting conditions Dynamic program Stability and step length Accuracy of assumptions Sound predictions References Measurements What to measure Practical measurements Calibrations Measurement of internal resonances Measurement of external resonances Isolator transmission Once per revolution marker References Transmission Error Measurement Original approach Batching approach Velocity approach High speed approach Tangential accelerometers Effect of dynamics Choice of encoders Accuracy of measurement Worms and wheels and spiral bevels Practical problems Comparisons References Recording and Storage Is recording required? Digital v analog Current PC limits Form of results Aliasing and filters Information compression Archive information References Contents xi Analysis Techniques Types of noise and irritation Problem identification Frequency analysis techniques Window effects and bandwidth Time averaging and jitter Average or difference Band and line filtering and re-synthesis Modulation Pitch effects Phantoms References Improvements Economics Improving the structure Improving the isolation Reducing the TE Permissible TE levels Frequency changing Damping Production control options References Lightly Loaded Gears Measurement problems Effects and identification Simple predictions Possible changes Anti-backlash gears Modelling rattle Reference Planetary and Split Drives Design philosophies Advantages and disadvantages Excitation phasing Excitation frequencies TE testing Unexpected frequencies Reference xii Contents High Contact Ratio Gears Reasons for interest Design with Harris maps stage relief Comparisons Measurement of TE References Low Contact Ratio Gears Advantages Disadvantages Curvature problems Frequency gains Condition Monitoring The problem Not frequency analysis Averaging or not Damage criteria Line elimination Scuffing - Smith Shocks Bearing signals References Vibration Testing Objectives Hydraulic vibrators Hammer measurements Reciprocal theorem Sweep, impulse, noise or chirp Combining results Coherence Couplings Advantages Problems Vibration generation Contents xiii Failures Connection with vibration Pitting Micropitting Cracking Scuffing Bearings Debris detection Couplings Loadings Overheating References Strength v Noise The connection between strength and noise Design for low noise helicals Design sensitivity Buying problems Units Index
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Admin مدير المنتدى
عدد المساهمات : 19002 التقييم : 35506 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
| موضوع: رد: كتاب Gear Noise and Vibration الجمعة 23 نوفمبر 2012, 8:17 pm | |
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أحمد علي الحارثي مهندس فعال
عدد المساهمات : 238 التقييم : 414 تاريخ التسجيل : 02/10/2012 العمر : 35 الدولة : مصر العمل : مهندس إنتاج وتصميم ميكانيكي الجامعة : المنيا
| موضوع: رد: كتاب Gear Noise and Vibration الجمعة 23 نوفمبر 2012, 8:52 pm | |
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Admin مدير المنتدى
عدد المساهمات : 19002 التقييم : 35506 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
| موضوع: رد: كتاب Gear Noise and Vibration الجمعة 23 نوفمبر 2012, 8:57 pm | |
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