Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Types of Damping01:20

Types of Damping

6.4K
If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
6.4K
Damped Oscillations01:07

Damped Oscillations

5.7K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
5.7K
Concept of Resonance and its Characteristics01:19

Concept of Resonance and its Characteristics

5.0K
If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not...
5.0K
Impact Loading01:19

Impact Loading

191
Impact loading occurs when a moving object collides with a stationary structure, such as a rod with a uniform cross-sectional area fixed at one end. Under these conditions, the rod absorbs the kinetic energy from the striking object, leading to deformation and subsequent stress development. As the rod returns to its original position and reaches maximum stress, the absorbed energy, initially manifested as kinetic energy, transforms entirely into strain energy.
In cases of elastic deformation,...
191
Types of Impact01:30

Types of Impact

512
Impacts can be classified in various forms, primarily under two subgroups: central impact and oblique impact. A central impact occurs when two objects collide head-on, possessing opposite velocities aligned along the line of impact. Conversely, an oblique impact occurs when two objects collide at an angle, resulting in a modification of both direction and velocity.
The coefficient of restitution is a metric for understanding the dynamics of impacts. It quantifies the ratio of relative velocity...
512
Impact01:30

Impact

137
Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...
137

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Mitigating failures and enhancing reliability of a canine ventricular shunt through robust multi-objective design method.

Medical engineering & physics·2026
Same author

Recent Advances in Injectable Hydrogels for Biomedical and Aesthetic Applications: Focus on Rheological Characteristics.

Gels (Basel, Switzerland)·2026
Same author

Tracking Eyelid Movement in Cogan's Lid Twitch Syndrome.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Kap1 Regulates Protein Stability of Nanog by Interfering with Fbxw8-Dependent Ubiquitination.

International journal of stem cells·2025
Same author

Allogenic mitochondria transfer improves cardiac function in iPS-cell-differentiated cardiomyocytes of a patient with Barth syndrome.

Experimental & molecular medicine·2025
Same author

A Quantitative Analysis of Work System Factors and Well-Being Among Nurses and Physicians in Rural and Urban Settings During Covid-19 Pandemic.

Workplace health & safety·2025
Same journal

Multiphysics Investigation on Thermal Characteristics of Internal Bio-Inspired V-Ribbed Cooling Channels for Outer Rotor PMSM.

Biomimetics (Basel, Switzerland)·2026
Same journal

Smart Logistics Model for Supply Chain Management via Brain-Inspired Geometric Deep Networks.

Biomimetics (Basel, Switzerland)·2026
Same journal

A Systematic Taxonomy of the Sunflower Optimization Algorithm: Variants, Hybridization Strategies, Applications, and Research Directions.

Biomimetics (Basel, Switzerland)·2026
Same journal

Toward a Compositional Theory of Trust in Embodied Intelligence: A QNLP Framework for Modeling Context, Interaction, and Trustworthiness.

Biomimetics (Basel, Switzerland)·2026
Same journal

Empirical Logic for Bio-Inspired Soft Computing: Illustrative Applications in Control Engineering and Cluster Analysis.

Biomimetics (Basel, Switzerland)·2026
Same journal

A Modified Multi-Strategy Dhole Optimization Algorithm and Its Engineering Applications.

Biomimetics (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Jun 15, 2025

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
07:30

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Published on: September 21, 2017

8.9K

The Function of Horn Ridges for Impact Damping.

Nayeon Lee1, Sungkwang Mun1, Kyle L Johnson2

  • 1Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS 39762, USA.

Biomimetics (Basel, Switzerland)
|August 28, 2024
PubMed
Summary
This summary is machine-generated.

Ram horn ridges significantly reduce impact pressure and strain by transforming and filtering mechanical waves. These natural structures enhance damping, protecting the animal

Keywords:
bio-inspired designdampingimpact dissipationram hornshear filtering

More Related Videos

Blast Quantification Using Hopkinson Pressure Bars
09:41

Blast Quantification Using Hopkinson Pressure Bars

Published on: July 5, 2016

9.0K
Modified Drop Tower Impact Tests for American Football Helmets
07:08

Modified Drop Tower Impact Tests for American Football Helmets

Published on: February 19, 2017

10.9K

Related Experiment Videos

Last Updated: Jun 15, 2025

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
07:30

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Published on: September 21, 2017

8.9K
Blast Quantification Using Hopkinson Pressure Bars
09:41

Blast Quantification Using Hopkinson Pressure Bars

Published on: July 5, 2016

9.0K
Modified Drop Tower Impact Tests for American Football Helmets
07:08

Modified Drop Tower Impact Tests for American Football Helmets

Published on: February 19, 2017

10.9K

Area of Science:

  • Biomechanics
  • Zoology
  • Materials Science

Background:

  • Ram horns exhibit complex spiral and ridge structures.
  • These features are hypothesized to play a role in mechanical impact resistance during ramming behavior.

Purpose of the Study:

  • To investigate the damping effects of ram horn ridges on mechanical impacts.
  • To analyze the structural variations in ram horns across different species.
  • To understand the mechanical functions of horn ridges and spirals in mitigating impact forces.

Main Methods:

  • Measurement of ridge amplitudes and frequencies in ram horns from eight specimens across six species.
  • Comparative analysis using finite element analysis (FEA) of ridged versus non-ridged horn models.
  • Simulation of mechanical impact scenarios to assess stress and strain reduction.

Main Results:

  • Ram horn ridges decreased initial ramming pressure by 20.7% and axial strain by 27.3%.
  • Ridges increased shear stress by 66.9% but decreased shear strain by 14.3%.
  • The damping ratio increased by 7.9% due to the presence of ridges, with a 16.7% decrease in radial strain.

Conclusions:

  • Ram horn ridges function to transfer longitudinal waves into shear waves.
  • The structures act to filter shear waves and stabilize the horn by mitigating excessive strain.
  • These findings elucidate the biomechanical advantages of ram horn morphology for impact absorption.