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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 45 1491 1382 583 507 97 20027

Andy Ruina publications per year

The chart shows the history of publications by Andy Ruina between 1983 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Andy Ruina published across 43 years, from 1983 to 2025, averaging 2.5 papers a year. Output peaked at 9 publications in 1998. 1 of the 106 publications appeared in the last two years.

No. of publications
2 4 6 8
Bar chart. Horizontal axis: year, 1983 to 2025. Vertical axis: number of publications, 0 to 9. Peak 9 publications in 1998. 1983: 3 publications 1984: 2 publications 1985: 1 publication 1986: 3 publications 1987: 3 publications 1988: 0 publications 1989: 3 publications 1990: 1 publication 1991: 2 publications 1992: 1 publication 1993: 2 publications 1994: 1 publication 1995: 2 publications 1996: 2 publications 1997: 7 publications 1998: 9 publications 1999: 3 publications 2000: 2 publications 2001: 3 publications 2002: 1 publication 2003: 0 publications 2004: 0 publications 2005: 5 publications 2006: 8 publications 2007: 1 publication 2008: 1 publication 2009: 0 publications 2010: 0 publications 2011: 8 publications 2012: 3 publications 2013: 2 publications 2014: 6 publications 2015: 4 publications 2016: 4 publications 2017: 4 publications 2018: 1 publication 2019: 3 publications 2020: 1 publication 2021: 1 publication 2022: 2 publications 2023: 0 publications 2024: 0 publications 2025: 1 publication
1983 2025

106 publications in total across all disciplines

View publications per year as a table
Andy Ruina: publications per year, 1983 to 2025
Year Publications
1983 3
1984 2
1985 1
1986 3
1987 3
1988 0
1989 3
1990 1
1991 2
1992 1
1993 2
1994 1
1995 2
1996 2
1997 7
1998 9
1999 3
2000 2
2001 3
2002 1
2003 0
2004 0
2005 5
2006 8
2007 1
2008 1
2009 0
2010 0
2011 8
2012 3
2013 2
2014 6
2015 4
2016 4
2017 4
2018 1
2019 3
2020 1
2021 1
2022 2
2023 0
2024 0
2025 1
Total 106
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Andy Ruina publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Andy Ruina sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 63 bars. Horizontal axis: publications, 47–56 to 659+. Vertical axis: number of scientists, 0 to 155. Most scientists, 155, have 147–156 publications. The last bar groups every scientist with 659 publications or more. The highlighted bar, 97–106 publications, is where this scientist sits. 47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47–56 publications 659+

This scientist: 97 publications — 6th percentile

6% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

View publications distribution as a table
Number of Mechanical and Aerospace Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
Publications Scientists This scientist
47–56 10
57–66 23
67–76 32
77–86 62
87–96 67
97–106 91 97
107–116 113
117–126 115
127–136 130
137–146 140
147–156 155
157–166 132
167–176 133
177–186 130
187–196 140
197–206 115
207–216 125
217–226 117
227–236 99
237–246 92
247–256 100
257–266 95
267–276 88
277–286 77
287–296 74
297–306 74
307–316 62
317–326 70
327–336 59
337–346 58
347–356 45
357–366 44
367–376 36
377–386 41
387–396 32
397–406 23
407–416 28
417–426 27
427–436 25
437–446 23
447–456 23
457–466 20
467–476 12
477–486 24
487–496 18
497–506 12
507–516 13
517–526 21
527–536 12
537–546 8
547–556 16
557–566 3
567–576 11
577–586 6
587–596 5
597–606 6
607–616 7
617–626 7
627–636 10
637–646 4
647–656 3
657–658 2
659+ 100
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Andy Ruina D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Andy Ruina sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 64 bars. Horizontal axis: D-Index, 30 to 93+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 34 D-Index. The last bar groups every scientist with 93 D-Index or more. The highlighted bar, 45 D-Index, is where this scientist sits. 30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 45 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

View D-Index distribution as a table
Number of Mechanical and Aerospace Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
D-Index Scientists This scientist
30 83
31 113
32 144
33 153
34 189
35 158
36 139
37 127
38 130
39 126
40 104
41 100
42 107
43 101
44 103
45 79 45
46 88
47 70
48 83
49 44
50 64
51 56
52 50
53 48
54 58
55 52
56 48
57 42
58 34
59 42
60 37
61 42
62 44
63 22
64 33
65 29
66 23
67 29
68 24
69 19
70 34
71 26
72 19
73 18
74 19
75 14
76 19
77 8
78 18
79 16
80 12
81 17
82 11
83 16
84 7
85 9
86 8
87 6
88 6
89 7
90 10
91 4
92 4
93+ 100
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Overview

Andy Ruina is a researcher affiliated with Cornell University in the United States, specializing in the field of Engineering. Their scholarly contributions primarily encompass several subfields, including Biomedical Engineering, Equine studies, Orthopedics and Sports Medicine, Aerospace Engineering, and Computational Mechanics.

The research topics covered by Andy Ruina span diverse areas such as Veterinary Equine Medical Research, Sports Performance and Training, Mechanics and Biomechanics Studies, Biomimetic Flight and Propulsion Mechanisms, Fluid Dynamics and Turbulent Flows, Model Reduction and Neural Networks, and Modular Robots and Swarm Intelligence.

Their publication record includes recent papers with the following details:

  • Full Flight Envelope and Trim Map of Flapping-Wing Micro Aerial Vehicles, 2020, Journal of Guidance Control and Dynamics
  • Construction and Excavation by Collaborative Double-Tailed SAW Robots, 2022, IEEE Robotics and Automation Letters
  • Standing horse posture: a longer stance is more stable, 2022, Biology Open
  • A longer stance is more stable for a standing horse, 2021, bioRxiv (Cold Spring Harbor Laboratory)
  • Descriptive Model-based Learning and Control for Bipedal Locomotion, 2025, arXiv (Cornell University)

Frequent collaborators in their work include:

  • Karen Gellman
  • Taylor S. Clawson
  • Silvio Ferrari
  • E. Farrell Helbling
  • Robert J. Wood

Andy Ruina's research findings have been published in multiple venues, illustrating a range of investigative contexts. These include:

  • Journal of Guidance Control and Dynamics
  • IEEE Robotics and Automation Letters
  • Biology Open
  • bioRxiv (Cold Spring Harbor Laboratory)
  • arXiv (Cornell University)

Best Publications

  • Slip instability and state variable friction laws

    Andy Ruina

  • Efficient bipedal robots based on passive-dynamic walkers.

    Steve Collins;Andy Ruina;Russ Tedrake;Martijn Wisse

  • The simplest walking model: stability, complexity, and scaling.

    Mariano Garcia;Anindya Chatterjee;Andy Ruina;Michael Coleman

  • Stability of Steady Frictional Slipping

    J. R. Rice;A. L. Ruina

  • A Three-Dimensional Passive-Dynamic Walking Robot with Two Legs and Knees

    Steven H. Collins;Martijn Wisse;Andy Ruina

  • Energetic consequences of walking like an inverted pendulum: step-to-step transitions.

    Arthur D Kuo;J Maxwell Donelan;Andy Ruina

  • Computer optimization of a minimal biped model discovers walking and running.

    Manoj Srinivasan;Andy Ruina

  • Slip motion and stability of a single degree of freedom elastic system with rate and state dependent friction

    Ji-Cheng Gu;James R. Rice;Andy L. Ruina;Simon T. Tse

  • A Bipedal Walking Robot with Efficient and Human-Like Gait

    S.H. Collins;A. Ruina

  • Linearized dynamics equations for the balance and steer of a bicycle: a benchmark and review

    J P Meijaard;J M Papadopoulos;A Ruina;A L Schwab

  • Multiple walking speed-frequency relations are predicted by constrained optimization.

    John E.A. Bertram;Andy Ruina

  • A collisional model of the energetic cost of support work qualitatively explains leg sequencing in walking and galloping, pseudo-elastic leg behavior in running and the walk-to-run transition

    Andy Ruina;John E.A. Bertram;Manoj Srinivasan

  • Planar sliding with dry friction Part 1. Limit surface and moment function

    Suresh Goyal;Andy Ruina;Jim Papadopoulos

  • Efficiency, speed, and scaling of two-dimensional passive-dynamic walking

    Mariano Garcia;Anindya Chatterjee;Andy Ruina

  • A Bicycle Can Be Self-Stable Without Gyroscopic or Caster Effects

    J.D.G. Kooijman;Jacob Philippus Meijaard;J.M. Papadopoulos;A. Ruina

  • Low-bandwidth reflex-based control for lower power walking: 65 km on a single battery charge

    Pranav A. Bhounsule;Jason Cortell;Anoop Grewal;Bram Hendriksen

  • A New Algebraic Rigid-Body Collision Law Based on Impulse Space Considerations

    A. Chatterjee;A. Ruina

  • An Uncontrolled Walking Toy That Cannot Stand Still

    Michael J. Coleman;Andy Ruina

  • Motions of a Rimless Spoked Wheel: a Simple 3D System with Impacts

    Michael J. Coleman;Anindya Chatterjee;Andy Ruina

  • A Helping Hand: Soft Orthosis with Integrated Optical Strain Sensors and EMG Control

    Huichan Zhao;Jonathan Jalving;Rukang Huang;Ross Knepper

Frequent Co-Authors

Chung-Yuen Hui
Chung-Yuen Hui Cornell University
James R. Rice
James R. Rice Harvard University
Anand Jagota
Anand Jagota Lehigh University
Arthur D. Kuo
Arthur D. Kuo University of Calgary
Rong Long
Rong Long University of Colorado Boulder
Roderic S. Lakes
Roderic S. Lakes University of Wisconsin–Madison
Silvia Ferrari
Silvia Ferrari Cornell University

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