Elastic strain energy storage

Evaluation of rockburst proneness considering specimen shape by

Subsequently, the W et, PES, peak-strength strain energy storage index (, and peak-strength potential energy of elastic strain (PES p) were used to assess the rockburst proneness of the cylindrical and cuboid specimens. In addition, the fragment ejection course of specimens under test was recorded by a high-speed camera.

Elastic energy storage technology using spiral spring devices and

With the elastic energy storage–electric power generation system, grid electrical energy can drive electric motors to wind up a spiral spring group to store energy when power

Highly elastic relaxor ferroelectrics for wearable energy storage

This relaxor ferroelectric elastomer maintains a stable energy density (>8 J cm −3) and energy storage efficiency (>75%) under strains ranging from 0 to 80%. This strain-insensitive, high elastic relaxor ferroelectric elastomer holds significant potential for flexible electronic applications, offering superior performance in soft robotics

A critical elastic strain energy storage-based concept for

To validate this assumption, a series of experiments are carried out. The results show that the critical elastic strain energy storage decreases linearly with the increase of crack length

Evaluation of energy storage and release potentials of highly

In this case, the residual elastic strain energy is the source of kinetic ejection during rockburst. 60, 61 For brittle rocks, the pre-peak deformation and failure process of rock mass is usually dominated by the storage or accumulation of ESE, whereas during post-peak failure some of the stored ESE contributes to rock failure (this part of

An improved method to calculate the rock brittleness index PEECR

The peak elastic strain energy consumption ratio (PEECR) is a rock brittleness index proposed by Gong and Wang. In the present study, based on the linear energy storage law of rock under triaxial compression, a new method was proposed to calculate the PEECR.

Storage and utilization of elastic strain energy during jumping

Based upon the optimal control solutions to a maximum-height countermovement jump (CMJ) and a maximum-height squat jump (SJ), this paper provides a quantitative description of how

Energy Analysis and Verification of a Constant

Focusing on the low energy-storage efficiency and unstable energy output of existing accumulators, this paper proposes a novel constant-pressure elastic-strain energy accumulator based on the rubber material

Elastic Energy Storage and Radial Forces in the Myofilament

sarcomere model lets us parse how strain energy is partitioned between the filaments and the cross-bridges in maximally activated isometric sarcomeres. We show that the cross-bridges

Ultra-High Elastic Strain Energy Storage in Metal-Oxide

Request PDF | Ultra-High Elastic Strain Energy Storage in Metal-Oxide-Infiltrated Patterned Hybrid Polymer Nanocomposites | Modulus of resilience, the measure of a material''s ability to store

A New Rock Brittleness Index Based on the Peak Elastic

A New Rock Brittleness Index Based on the Peak Elastic Strain Energy Consumption Ratio Fengqiang Gong1,2 · Yunliang Wang 3 Received: 10 August 2021 / Accepted: 5 December 2021 / Published online: 20 January 2022 reaches its energy storage limitation, it will begin to fail. A part of the accumulated elastic strain energy will induce the

Ultrahigh Elastic Energy Storage in Nanocrystalline Alloys with

A new concept for mechanical energy storage and retrieval using surface energy as reservoir in body-centered cubic (bcc) tungsten nanowire is demonstrated, achieving a combination of unique features such as large and constant actuation stress, exceptionally large actuation strain and energy density, and >98% energy storage efficiency. Expand

A New Rock Brittleness Index Based on the Peak Elastic Strain Energy

To evaluate rock brittleness more accurately, a new rock brittleness index based on the peak elastic strain energy consumption ratio (PEECR) was proposed in this study. Considering the relationship between rock brittleness and energy evolution characteristics of rock materials under confining pressure, the PEECR was defined as the dissipated proportion of

Evaluation of rockburst proneness considering specimen

conﬁrmed, and the energy storage coefﬁcient was found to be unrelated to specimen shape. On the basis of LES law, two rockburst proneness indexes, namely the strain energy storage index (W et) and the potential energy of elastic strain (PES), were modiﬁed. Subsequently, the W et, PES, peak‐strength strain energy storage index (Wet)

Storage of elastic strain energy in muscle and other tissues

Storage of strain energy in elastic materials has important roles in mammal running, insect jumping and insect flight. The elastic materials involved include muscle in every case, but only in

Ultrahigh Elastic Energy Storage in Nanocrystalline Alloys with

Elastic materials that store and release elastic energy play pivotal roles in both macro and micro mechanical systems. Uniting high elastic energy density and efficiency is crucial for emerging technologies such as artificial muscles, hopping robots, and unmanned aerial vehicle catapults, yet it remains a significant challenge.

Increased force and elastic energy storage are not the

Therefore the joint moment changes at the turning point of the jump with AEL suggests no change in elastic energy storage at the ankle (a key joint for storing and returning energy from the highly compliant Achilles tendon ), a potential small increase in energy storage across the knee, and a reduction in energy storage potential across the hip

Shorter heels are linked with greater elastic energy storage in

The role of the Achilles tendon (AT) in elastic energy storage with subsequent return during stance phase is well established 1,2,3,4,5,6,7.Recovery of elastic energy imparted to the AT is

Quantifying mechanical loading and elastic strain energy of the

The elastic strain energy recoil of the AT during the propulsion phase of walking and running is a well-known mechanism within the muscle–tendon unit, which increases the efficiency of muscle output power 4–6.The contribution of the elastic strain energy recoil to the muscle–tendon unit''s positive work is greater compared to the work produced by the muscle

Elastic strain energy storage in the feet of running monkeys

Elastic strain energy storage in the feet of running monkeys M. B. BENNETT, R. F. KER & R. McN. ALEXANDER Department of Pure and Applied Biology, Leeds University, Leeds, W. Yorks. LS2 9JT (Accepted 14 June 1988) (With 3 figures in the text) Monkeys are ''flat-footed'' in comparison to humans, but they are still able to utilize elastic

Highly elastic energy storage device based on intrinsically super

At a strain of up to 1200%, the resulting stretchable LIBs are still sufficient to power LEDs. This study sheds light on the design and development of high-performance intrinsically super-stretchable materials for the advancement of highly elastic energy storage devices for powering flexible/wearable electronics that can endure large deformation.

A peak-strength strain energy storage index for rock burst

The greater the value of ESC is, the higher the capability of elastic strain energy storage is. Among the nine rock materials, the ESC of Yueyang granite (0.8726) is the largest and that of yellow rust granite (0.5580) is the smallest. Hence, Yueyang granite has the highest ability to store elastic strain energy, and the lowest for the yellow

Mechanical behavior of rock under uniaxial tension: Insights from

Based on the four parameters (peak strain energy storage index W et p, peak input energy density u t p, peak elastic energy density u e p, and peak dissipated energy density u d p) calculated according to the trend that u e and u d increase linearly with u t, the relative energy storage capacity and absolute energy distribution characteristics

Theoretical verification of the rationality of strain energy storage

The rationality of using strain energy storage index (W et) for evaluating rockburst proneness was theoretically verified based on linear energy storage (LES) law in this

How tendons buffer energy dissipation by muscle

Evidence from both in situ and in vivo studies suggests that the storage and release of elastic strain energy in tendon can delay and slow the dissipation of mechanical energy by active muscle fascicles. Figure 4 summarizes how this mechanism works at the level of the muscle-tendon unit,

Elastic energy storage and the efficiency of movement

In the presence of biological springs, these energy fluctuations can be accommodated by the storage and return of elastic strain energy, so reducing the muscle work required. (C) Swing phase of terrestrial locomotion. In the absence of biological springs, muscle does positive work to protract and then retract the limb during swing.

Elastic energy storage and the efficiency of movement

In the presence of biological springs, these energy fluctuations can be accommodated by the storage and return of elastic strain energy, so reducing the muscle work required. (C) Swing phase of terrestrial locomotion. In the absence of biological springs, muscle does positive work to protract and then retract the limb during swing.

Elastic energy

Elastic energy is the mechanical potential energy stored in the configuration of a material or physical system as it is subjected to elastic deformation by work performed upon it. Elastic energy occurs when objects are impermanently compressed, stretched or generally deformed in any manner. Elasticity theory primarily develops formalisms for the mechanics of solid bodies and

Calculation method and evolution rule of the strain energy

Method for calculating strain energy via elastic theory. The strain energy density analysis in this study is based on two principles: first, that the experimental process complies with the first

Energy Storage in Elastic Components | SpringerLink

With the large area under the stress–strain curve (energy per unit volume) coupled with elasticities that extend well beyond the 100% strain, they are good candidates to replace linear and torsional springs, as long as the application does not involve extreme temperatures or corrosive conditions that might jeopardize the integrity of the

Energy Analysis and Verification of a Constant-Pressure Elastic-Strain

Focusing on the low energy-storage efficiency and unstable energy output of existing accumulators, this paper proposes a novel constant-pressure elastic-strain energy accumulator based on the rubber material hyperelastic effect. The proposed accumulator can store and release energy at a constant pressure. Based on the exergy analysis method, the

Storage and utilization of elastic strain energy during jumping

The reason is twofold: first, nearly as much elastic strain energy was stored during the SJ as the CMJ; second, more stored elastic strain energy was lost as heat during the CMJ. There was also a difference in the way energy was stored during each jump. Increasing tendon compliance in the model led to an increase in elastic energy storage

Stored and dissipated energy of plastic deformation revisited

In the present work, we revisited the classical topic of elastic energy storage during strain hardening of metals from a perspective of the analytically tractable thermodynamic modelling framework inspired by the widely accepted phenomenological single-variable dislocation evolution approach. The model versatility has been extended towards

High density mechanical energy storage with carbon nanothread

This demonstrates the capability of the theoretical model to quantitatively describe the strain energy storage and to distinguish the contributions from different deformation modes in the linear

Storage of elastic strain energy in muscle and other tissues

Storage of elastic strain energy in muscle and other tissues. Storage of elastic strain energy in muscle and other tissues Nature. 1977 Jan 13;265(5590):114-7. doi: 10.1038/265114a0. Authors R M Alexander, H C Bennet-Clark. PMID: 834252 DOI: 10.1038

Frontiers | Sport-Specific Capacity to Use Elastic Energy in the

Normalized elastic strain energy and strain energy recovered from the patellar (A) 2016), yet they were unexpected in athletes whose daily activity requires sufficient tendon strain and elastic energy storage to amplify power output or to reduce the energy cost of mechanical work (Alexander et al., 1982; Roberts et al., 1997).

A critical elastic strain energy storage-based concept for

The critical elastic strain energy storage W e decreases linearly with the increase of crack length a in elastic–plastic materials and the linear relationship is verified by a series of experimental designs and implementations during the crack initiation and propagation in H

Elastic energy

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