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

Scaling01:26

Scaling

439
In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
439
Circular Shaft - Stresses in Linear Range01:13

Circular Shaft - Stresses in Linear Range

565
Consider a scenario where a circular shaft is subject to torque that remains within the boundaries of Hooke's Law, avoiding any permanent deformation. So, the formula for shearing strain is revisited. This formula is multiplied by the modulus of rigidity, and then Hooke's Law for the shearing stress and strain is applied. As a result, the equation for shearing stress in a shaft can be derived.
565
Thin-Walled Hollow Shafts01:15

Thin-Walled Hollow Shafts

415
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...
415
Generalized Hooke's Law01:22

Generalized Hooke's Law

2.4K
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of the...
2.4K
Equation of Motion: General Plane motion - Problem Solving01:16

Equation of Motion: General Plane motion - Problem Solving

383
Consider a lawn roller with a mass of 100 kg, a radius of 0.2 meters, and a radius of gyration of 0.15 meters. A force of 200 N is applied to this roller, angled at 60 degrees from the horizontal plane. What will be the angular acceleration of the lawn roller?
The friction between the roller and the ground is characterized by two coefficients. The static friction coefficient is 0.15, while the kinetic friction coefficient is 0.1. These values are crucial in understanding the interaction between...
383
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

537
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
537

You might also read

Related Articles

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

Sort by
Same author

Learning to Control a Three-Dimensional Ferrofluidic Robot.

Soft robotics·2023
Same author

Helically-driven granular mobility and gravity-variant scaling relations.

RSC advances·2022
Same author

Heterogeneous Hydrogel Structures with Spatiotemporal Reconfigurability using Addressable and Tunable Voxels.

Advanced materials (Deerfield Beach, Fla.)·2021
Same author

Advances in Implantable Microelectrode Array Insertion and Positioning.

Neuromodulation : journal of the International Neuromodulation Society·2021
Same author

Materials, Actuators, and Sensors for Soft Bioinspired Robots.

Advanced materials (Deerfield Beach, Fla.)·2020
Same author

A Shapeshifting Ferrofluidic Robot.

Soft robotics·2020
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Dec 5, 2025

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.9K

Granular scaling laws for helically driven dynamics.

Andrew Thoesen1, Teresa McBryan1, Darwin Mick1

  • 1School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona, 85287.

Physical Review. E
|October 20, 2020
PubMed
Summary
This summary is machine-generated.

A novel helical granular scaling law accurately predicts the performance of screw-propelled vehicles in granular terrain. This research validates the law using experiments and simulations, paving the way for better vehicle-terrain dynamics models.

More Related Videos

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
09:00

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

Published on: September 29, 2019

13.7K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

9.0K

Related Experiment Videos

Last Updated: Dec 5, 2025

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.9K
Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
09:00

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

Published on: September 29, 2019

13.7K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

9.0K

Area of Science:

  • * Granular physics and mechanics
  • * Robotics and vehicle dynamics
  • * Computational modeling and simulation

Background:

  • * Understanding granular physics is essential for predicting vehicle-terrain interactions.
  • * Screw-propelled vehicles offer unique mobility in challenging granular environments.
  • * Existing models often lack accuracy for complex geometries and deformable media.

Purpose of the Study:

  • * To test a novel helical granular scaling law for predicting vehicle performance.
  • * To validate the scaling law through experimental testing and numerical simulations.
  • * To assess the law's applicability across different scales and gravitational conditions.

Main Methods:

  • * Dimensional analysis of a modular screw-propelled vehicle and its pontoon components.
  • * Experimental trials with three sets of pontoon geometries in a lunar regolith simulant.
  • * Multibody dynamics and discrete element method (DEM) cosimulations under varying gravity.

Main Results:

  • * Experimental predictions of power and translational velocity showed low error (3-9% and 2-12%, respectively).
  • * Simulations confirmed the validity of gravity-dependent scaling laws with under 5% error.
  • * The helical granular scaling law demonstrated high accuracy for predicting vehicle performance.

Conclusions:

  • * The developed helical granular scaling law is a reliable tool for predicting screw-propelled vehicle performance.
  • * The validated scaling laws support the design of vehicles for diverse extraterrestrial and terrestrial granular environments.
  • * This work advances the predictive capabilities for complex vehicle-terrain dynamics.