Modeling of Complex Properties of Vacuum Packed Particles Using Evolutionary Algorithms

Zalewski, Robert; Chodkiewicz, Paweł; Pyrz, Mariusz

doi:10.1007/978-3-319-16528-8_25

Cited by 3 publications

(3 citation statements)

References 17 publications

(23 reference statements)

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“…The EA based procedure of the model calibration led to the very satisfactory results for different constitutive models of viscoplastic flow [3], [8], [17]. The developed optimization procedure was highly effective especially in the case of several experimental curves taken into account simultaneously.…”

Section: Numerical Simulation Of Vpp Behaviormentioning

confidence: 86%

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Controlled Vacuum Packed Particles as a Part of Machine Interface System

Pyrz

2015

New Contributions in Information Systems and Technologies

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Abstract. New opportunities of the Vacuum Packed Particles (VPP) and its application as a part of human-machine interface system are investigated. VPP are conglomerates composed of grains encapsulated in a tight, flexible envelope and submitted to an internal underpressure. The underpressure value has a great impact on the behavior and properties of the medium. This property may be used in various novel applications. The experimental results related to the stiffness and the vibration analysis and the controllable mechanical properties of VPP are given. The possibilities of numerical simulation of VPP behavior in a function of internal pressure are shown. The potential and perspectives for novel applications of VPP as a part of human-machine interaction are pointed out.

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Section: Numerical Simulation Of Vpp Behaviormentioning

confidence: 86%

“…The parameter identification may be formulated as an optimization problem [17]. The material constants can be determined by comparing the results of experiments with the curves simulated numerically and by searching the parameters that minimize the discrepancy.…”

Section: Numerical Simulation Of Vpp Behaviormentioning

confidence: 99%

Controlled Vacuum Packed Particles as a Part of Machine Interface System

Pyrz

2015

New Contributions in Information Systems and Technologies

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“…Future work related to the investigated topic will include application of numerical strategies to the identification procedure of constitutive models for discussed structures. For example in [24], the Evolutionary Algorithm based identification method has been applied for similar problems. It enabled authors to obtain good results even for relatively large range of parameter variation.…”

Section: Discussionmentioning

confidence: 99%

Modelling of Innovative Controllable Structures Made of Granular Materials

Zalewski¹,

Skalski

2015

New Contributions in Information Systems and Technologies

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Abstract. The viscoplastic behavior of "innovative" structure is considered. Investigated structures are created on the basis of vacuum packed particles. Partial vacuum generated inside a hermetic sleeve filled with loose granular material transforms the system from semi-liquid to semisolid state. Such phenomenon, known as a "jamming mechanism", is strongly nonlinear in considered structures. Special granular structures have recently found interesting engineering and biomedical applications such as vacuum mattresses, orthopedic orthesis, universal robotic grippers and flexible endoscopes. To capture a response of the specially designed granular sample to external loading, a Bodner-Partom viscoplastic constitutive model has been chosen. The identification procedure is based on experimental compression tests realized at various strain rates and underpressure levels.

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