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関連する概念動画

Elastic Potential Energy01:01

Elastic Potential Energy

Elastic potential energy is the energy stored as a result of the deformation of an elastic object, such as the stretching of a spring. An object is elastic if it returns to its original shape and size after being deformed. 
Potential energy is also associated with the elastic force exerted by an ideal spring. The work done by this force can be represented as a change in the elastic potential energy of the spring. Thus, the work done by a perfectly elastic spring, in one dimension, depends only...
Hooke's Law01:26

Hooke's Law

Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
Plastic Behavior01:21

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.
Strain-Energy Density01:20

Strain-Energy Density

Understanding the strain energy density in materials under axial load is crucial for evaluating their mechanical behavior and durability. When a rod is subjected to such a load, it elongates and stores energy, known as strain energy, as potential energy within the material. This energy is measured in terms of energy per unit volume.
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this region...
Impact Loading01:19

Impact Loading

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,...
Electro-mechanical Systems01:19

Electro-mechanical Systems

Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...

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関連する実験動画

Updated: Jul 11, 2026

Fabrication Process of Silicone-based Dielectric Elastomer Actuators
10:32

Fabrication Process of Silicone-based Dielectric Elastomer Actuators

Published on: February 1, 2016

高速の電気駆動型エラストマーで,ストレスは100%以上です.

Pelrine1, Kornbluh, Pei

  • 1SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, USA.

Science (New York, N.Y.)
|February 5, 2000
PubMed
まとめ

介電弾性エラストマーフィルムを前置すると,電気アクチュエータの性能が著しく向上し,200%以上のストレスを達成し,自然な筋肉の能力を上回ります. 電気活性ポリマーのこの進歩は,多様なアプリケーションの可能性を秘めています.

科学分野:

  • マテリアルサイエンス 材料科学
  • ポリマーサイエンスの科学
  • 電気工学 電気工学とは

背景:

  • 介電弾性エラストモールは,電動アクチュエータで使用され,電圧が適用されたときに最大30-40%のストレスを発生します.
  • 静電力は,介電弾性エラストマーフィルムの厚さの圧縮と面積拡大を引き起こす.
  • これらのアクチュエータの性能は,潜在的に改善することができます.

研究 の 目的:

  • 介電弾性エラストマーアクチュエータの性能に対する予備訓練の影響を調査する.
  • 電気活性ポリマー装置におけるより高いアクチュエートストレンスとエネルギー密度を達成するために.

主な方法:

  • 適合電極でコーティングされた介電性エラストマーフィルム (シリコン,アクリル) の製造.
  • 電圧を適用してアクチュエーションを誘導する.
  • エラストマーフィルムにユニアクシアルとバイアクシアルのプレトレーニング技術を実装する.

主要な成果:

  • 介電弾性エラストマーフィルムをプレストレインすると,シリコンの場合は117%,アクリルの場合は215%のアクチュエートストレインが著しく改善されました.
  • シリコン弾性質の性能は,張力,圧力,反応時間という点では,天然の筋肉の性能を上回りました.

さらに関連する動画

A 100 KW Class Applied-field Magnetoplasmadynamic Thruster
11:47

A 100 KW Class Applied-field Magnetoplasmadynamic Thruster

Published on: December 22, 2018

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots
08:47

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots

Published on: November 8, 2019

関連する実験動画

Last Updated: Jul 11, 2026

Fabrication Process of Silicone-based Dielectric Elastomer Actuators
10:32

Fabrication Process of Silicone-based Dielectric Elastomer Actuators

Published on: February 1, 2016

A 100 KW Class Applied-field Magnetoplasmadynamic Thruster
11:47

A 100 KW Class Applied-field Magnetoplasmadynamic Thruster

Published on: December 22, 2018

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots
08:47

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots

Published on: November 8, 2019

  • 達成された特定のエネルギー密度は,他のフィールドアクチュエートされた材料よりも大幅に高かった.

    • 結論:

    • プレストレインは,介電弾性エラストマーアクチュエータの性能を向上させる重要な要因です.
    • これらの高性能の電気活性ポリマーは,高速で高ストレスのアクチュエーションを必要とするアプリケーションの潜在能力を示しています.
    • この技術は,優れたエネルギー密度と応答時間により,既存のアクチュエーション方法の有望な代替案を提供します.