A Novel Model to Simulate Flexural Complements in Compliant Sensor Systems

Tang, Hongyan; Zhang, Dan; Guo, Sheng; Qu, Haibo

doi:10.3390/s18041029

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…The motion of the power cable can be analyzed with the Euler-Bernoulli beam theory if the bending displacement of the power cable is small. In case of large bending displacement is expected, however, pseudo-rigid-body method, elliptic integral solution, domain decomposition method, chain algorithm or circle-arc method are used for mathematical modeling [33,34]. The properties of the power cables obtained in the previous test were used to create DEM (Discrete Element Model), composed of multiple links and springs, by dividing the entire power cables into n parts as shown in Figure 12.…”

Section: Consideration Of Viscoelasticitymentioning

confidence: 99%

Modeling and Simulation of Heavy-Lift Tethered Multicopter Considering Mechanical Properties of Electric Power Cable

Kwon

Lee

2021

Aerospace

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In case of a fire at a high-rise building which is densely populated, an extension ladder is used to rescue people who have yet to evacuate to a safe place away from the fire, whereas those who are stranded at a height that is unreachable with the ladder should be promptly saved with different rescue methods. In this case, an application of the tethered flight system capable of receiving power over a power cable from the ground to a multicopter may guarantee effective execution of the rescue plan at the scene where fire is raging without any restrictions of the flight time. This article identified restrictions that should be considered in the design of a multicopter capable of tethered flight aimed to rescue stranded people at an inaccessible location with an extension ladder at a fire-ravaged high-rise building and assessed its feasibility. A power cable capable of providing dozens of kilowatts of electricity should be installed to enable the implementation of the rescue mission using the tethered multicopter. A flexible multi-body dynamics modeling and simulation with viscoelastic characteristics and heavy weight of power cable were carried out to evaluate the effects of such cable of the tethered flight system on the dynamic characteristics of the multicopter. The results indicate that as for a heavy-lift tethered multicopter designed to be utilized for rescue operations, the properties of the power cable, such as weight, rigidity and length, have a major impact on the position and attitude control performance.

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Section: Consideration Of Viscoelasticitymentioning

confidence: 99%

Modeling and Simulation of Heavy-Lift Tethered Multicopter Considering Mechanical Properties of Electric Power Cable

Kwon

Lee

2021

Aerospace

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“…The 2R PRB model, 33 the 3R PRB model, 34 the 6-DOF PRB model, 35 the dynamic spline 36 and the second-order approximation PRB model 37 were all proposed for high calculation accuracy; however, these models cannot describe axial deformation under combined loads accurately. To overcome this problem, Tang et al 38 and Yu et al 39 proposed the spline PRB model and the prismatic-revolute-revolute PRB model, respectively, to simulate large deflections with combined end moment and force loads. However, the characteristic parameters for these PRB methods must be determined via a numerical optimization process and these parameters must be recomputed for each different load case.…”

Section: Introductionmentioning

confidence: 99%

Adaptive pseudo-rigid-body model for generalized cross-spring pivots under combined loads

Wang

Sun

Wang

et al. 2014

Advances in Mechanical Engineering

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Generalized cross-spring pivots (CSPs) are widely used as revolute joints in precision machinery. However, pseudo-rigid-body (PRB) models cannot capture the parasitic motions of a generalized CSP exactly under combined loads; moreover, the characteristic parameters used in PRB methods must be recomputed using optimization techniques. In this study, we develop two simple and accurate PRB models for generalized CSPs. First, a PRB method for a beam is developed based on the beam constraint model and the instantaneous center model, where the beam is modeled as two rigid links joined at a pivot via a torsion spring. Subsequently, two PRB models of the generalized CSP, comprising a four-bar model for accuracy and a pin-joint model for stiffness, are constructed based on a kinematic analysis using the proposed PRB method. A deflection characteristic analysis is then conducted to determine the relationship between the proposed model and the existing models. Finally, the PRB models for the pivot under the action of combined loads are validated via finite element analysis. The error evaluation indicates that the proposed PRB models are more accurate than the results from existing methods. The PRB models proposed here can be used in parametric design of compliant mechanisms.

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A Novel Model to Simulate Flexural Complements in Compliant Sensor Systems

Cited by 2 publications

References 23 publications

Modeling and Simulation of Heavy-Lift Tethered Multicopter Considering Mechanical Properties of Electric Power Cable

Modeling and Simulation of Heavy-Lift Tethered Multicopter Considering Mechanical Properties of Electric Power Cable

Adaptive pseudo-rigid-body model for generalized cross-spring pivots under combined loads

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