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Topic · Mechanical Engineering

Gear and Bearing Dynamics Analysis

Gear and Bearing Dynamics Analysis is a research topic within Mechanical Engineering. Science Explorer counts 31k research works in it since 1950. 9.9% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the dynamics, faults, and lubrication aspects of gear systems, including topics such as mesh stiffness, tooth crack propagation, vibration analysis, elastohydrodynamic lubrication, rolling contact fatigue, bearing faults, and nonlinear dynamics. The papers cover various types of gears including spur gears and planetary gears.

  • Gear Dynamics
  • Mesh Stiffness
  • Tooth Crack
  • Vibration Analysis
  • Elastohydrodynamic Lubrication
  • Rolling Contact Fatigue
  • Bearing Faults
  • Nonlinear Dynamics
  • Spur Gear
  • Planetary Gear
Research works
31k
fractional, since 1950
In the world top 10%
3.1k
per year above
Top-10% rate
9.9%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+26%
the tick is no change
Largest producer
China
72% of the 10 largest, 2022-now
Gear and Bearing Dynamics Analysis

Which countries lead Gear and Bearing Dynamics Analysis research?

By volume, China and India publish the most (4.6k and 446 works in 2022-now).

By volume, 2022-now

  1. 1 China 4.6k works
  2. 2 India 446 works
  3. 3 United States 291 works
  4. 4 Germany 290 works
  5. 5 Japan 164 works
  6. 6 United Kingdom 155 works
  7. 7 Russia 138 works
  8. 8 Italy 127 works
  9. 9 South Korea 105 works
  10. 10 France 103 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 71.7%India: 6.9%United States: 4.5%Germany: 4.5%6 others listed: 12.3%72%largest
China4,605 · 71.7%India446 · 6.9%United States291 · 4.5%Germany290 · 4.5%6 others listed793 · 12.3%

Shares of the rows listed above, not of the whole node.

Which institutions lead Gear and Bearing Dynamics Analysis research?

By volume in 2022-now, Chongqing University publishes the most Gear and Bearing Dynamics Analysis research, followed by Xi'an Jiaotong University and Southwest Jiaotong University.

By volume, 2022-now

  1. 1 Chongqing UniversityChina 175 works
  2. 2 Xi'an Jiaotong UniversityChina 129 works
  3. 3 Southwest Jiaotong UniversityChina 107 works
  4. 4 Northwestern Polytechnical UniversityChina 107 works
  5. 5 Nanjing University of Aeronautics and AstronauticsChina 98 works
  6. 6 Northeastern UniversityChina 77 works
  7. 7 Harbin Institute of TechnologyChina 66 works
  8. 8 Central South UniversityChina 64 works
  9. 9 Chinese Academy of SciencesChina 62 works
  10. 10 Shanghai Jiao Tong UniversityChina 61 works

Who are the leading researchers in Gear and Bearing Dynamics Analysis?

The most-cited researchers publishing on Gear and Bearing Dynamics Analysis include Frede Blaabjerg, Qiang Zhang and Douglas Scott.

  1. 1 Frede Blaabjerg Denmark 203k citations
  2. 2 Qiang Zhang China 184k citations
  3. 3 Douglas Scott Canada 172k citations
  4. 4 Han Zhang China 161k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Gear and Bearing Dynamics Analysis?

The most cited paper in Gear and Bearing Dynamics Analysis is "Surface energy and the contact of elastic solids" (Kenneth Langstreth Johnson, Kevin Kendall, A. D. Roberts, 1971), with 8,054 citations. Next come "Elastic Spheres in Contact Under Varying Oblique Forces" (2,762) and "Rolling element bearing diagnostics—A tutorial" (2,711).

Most cited papers
#PaperReleasedCitations
1 Surface energy and the contact of elastic solids Kenneth Langstreth Johnson, Kevin Kendall, A. D. Roberts · Proceedings of the Royal Society of London A Mathematical and Physical Sciences 8 Sep 1971 8,054
2 Elastic Spheres in Contact Under Varying Oblique Forces R. D. Mindlin, Herbert Deresiewicz · Journal of Applied Mechanics Sep 1953 2,762
3 Rolling element bearing diagnostics—A tutorial Robert Bond Randall, Jérôme Antoni · Mechanical Systems and Signal Processing 27 Nov 2010 2,711
4 Rolling element bearing diagnostics using the Case Western Reserve University data: A benchmark study Wade A. Smith, Robert Bond Randall · Mechanical Systems and Signal Processing Open access 11 May 2015 2,708
5 A survey of models, analysis tools and compensation methods for the control of machines with friction Brian Armstrong-Hélouvry, Pierre E. Dupont, Carlos Canudas de Wit · Automatica Open access Jul 1994 2,685
All 101 most cited papers, with filters and sorting

Where is Gear and Bearing Dynamics Analysis research done?

The largest centres of Gear and Bearing Dynamics Analysis research in 2022-now are Beijing (China), Xi'an (China), Chongqing (China) and Shanghai (China). Among places with at least 20 works in it, it is an unusually large share of all research in Luoyang.

Largest cities, 2022-now

  1. 1 BeijingChina 615 works
  2. 2 Xi'anChina 385 works
  3. 3 ChongqingChina 273 works
  4. 4 ShanghaiChina 253 works
  5. 5 NanjingChina 229 works
  6. 6 ShenyangChina 203 works
  7. 7 WuhanChina 203 works
  8. 8 ChengduChina 175 works
  9. 9 HarbinChina 158 works
  10. 10 ChangshaChina 138 works

Where it is the local speciality

  1. LuoyangCN · 66.8 works21×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Gear and Bearing Dynamics Analysis than the world average.

See Gear and Bearing Dynamics Analysis on the map

Where is the best place to study Gear and Bearing Dynamics Analysis?

Among universities, judged by research, Northeastern University, Chongqing University and Southwest Jiaotong University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 21.02%fractional works in this field (log) →share of work in the world top 10% →Wenzhou UniversityNortheastern Univers…Southwest Jiaotong U…Chongqing University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Northeastern UniversityChina 74.023.1%13.2×77 +22.4%
2Chongqing UniversityChina 70.815.5%24.6×175 +8.8%
3Southwest Jiaotong UniversityChina 69.516.1%21.3×107 +74.4%
4Wenzhou UniversityChina 69.229.9%10.7×15 +77.9%
5Yanshan UniversityChina 68.728.4%16.5×38 +38.5%
6Hunan UniversityChina 68.420.7%7.7×36 +48.6%
7Xi'an Jiaotong UniversityChina 66.516.6%11.3×129 -2.1%
8Shanghai Jiao Tong UniversityChina 65.822.3%3.2×60 +23.5%
9Northwestern Polytechnical UniversityChina 65.715.2%14.4×107 +61.5%
10Huazhong University of Science and TechnologyChina 62.822.4%3.7×43 +44.5%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Gear and Bearing Dynamics Analysis, country by country

Is Gear and Bearing Dynamics Analysis research growing?

Output in 2022-2025 was 26% higher than in 2018-2021, peaking in 2024. The fastest-growing topics are Gear and Bearing Dynamics Analysis.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Gear and Bearing Dynamics Analysis as a percentage of every work published that year, 0.033% in 2024.

still counting0.020%0.040%Gear and Bearing Dynamics Analysis0.030% in 202519801990200020102020

Fractional works of Gear and Bearing Dynamics Analysis over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Gear and Bearing Dynamics Analysis9.9% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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