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Three-Dimensional Force System01:30

Three-Dimensional Force System

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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
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Hydrostatic Pressure Force on a Curved Surface01:04

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Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
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Two-Dimensional Force System01:20

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A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
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In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
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Three-Dimensional Force System:Problem Solving01:30

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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
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Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
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Soft Multi-Directional Force Sensor for Underwater Robotic Application.

Rafsan Al Shafatul Islam Subad1, Md Mahmud Hasan Saikot2, Kihan Park1

  • 1Department of Mechanical Engineering, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth, MA 02747, USA.

Sensors (Basel, Switzerland)
|May 28, 2022
PubMed
Summary
This summary is machine-generated.

We developed a low-cost, flexible multi-directional force sensor using flex sensors in a hemispherical shell. This novel tactile sensor is effective for underwater robotic applications.

Keywords:
flex sensormulti-directional force sensingsoft tactile sensorunderwater soft robotics

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Area of Science:

  • Robotics
  • Materials Science
  • Sensor Technology

Background:

  • Tactile information is vital for robotic interaction and manipulation.
  • Current tactile sensors face limitations in directional force sensing, cost, fabrication, and underwater usability.

Purpose of the Study:

  • To present a facile, cost-effective, and flexible multi-directional force sensing system.
  • To enable effective tactile sensing in underwater robotic applications.

Main Methods:

  • A hemispherical shell structure was fabricated using silicone.
  • Four flex sensors were embedded 90° apart within the shell.
  • Numerical simulations and experimental calibration were performed to validate sensor performance.

Main Results:

  • The sensor successfully localized contact points and determined force direction and magnitude.
  • Distinctive output patterns from flex sensors characterized applied forces.
  • The system demonstrated functionality in an underwater environment.

Conclusions:

  • The developed sensor offers a cost-effective solution for multi-directional force sensing.
  • This technology is well-suited for underwater soft robotic applications.
  • The study expands the capabilities of tactile sensing in challenging environments.