Next Article in Journal
Automated Analysis of Platelet Aggregation on Cultured Endothelium in a Microfluidic Chip Perfused with Human Whole Blood
Next Article in Special Issue
Flexible Microfluidics: Fundamentals, Recent Developments, and Applications
Previous Article in Journal
Electrical Performance and Bias-Stress Stability of Amorphous InGaZnO Thin-Film Transistors with Buried-Channel Layers
Previous Article in Special Issue
Recent Advances in Continuous-Flow Particle Manipulations Using Magnetic Fluids
Open AccessArticle

Rapid Design and Analysis of Microtube Pneumatic Actuators Using Line-Segment and Multi-Segment Euler–Bernoulli Beam Models

1
Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA
2
Department of Civil, Construction, and Environmental Engineering, Iowa State University, Ames, IA 50011, USA
*
Author to whom correspondence should be addressed.
Micromachines 2019, 10(11), 780; https://doi.org/10.3390/mi10110780
Received: 26 September 2019 / Revised: 7 November 2019 / Accepted: 12 November 2019 / Published: 14 November 2019
(This article belongs to the Special Issue 10th Anniversary of Micromachines)
Soft material-based pneumatic microtube actuators are attracting intense interest, since their bending motion is potentially useful for the safe manipulation of delicate biological objects. To increase their utility in biomedicine, researchers have begun to apply shape-engineering to the microtubes to diversify their bending patterns. However, design and analysis of such microtube actuators are challenging in general, due to their continuum natures and small dimensions. In this paper, we establish two methods for rapid design, analysis, and optimization of such complex, shape-engineered microtube actuators that are based on the line-segment model and the multi-segment Euler–Bernoulli’s beam model, respectively, and are less computation-intensive than the more conventional method based on finite element analysis. To validate the models, we first realized multi-segment microtube actuators physically, then compared their experimentally observed motions against those obtained from the models. We obtained good agreements between the three sets of results with their maximum bending-angle errors falling within ±11%. In terms of computational efficiency, our models decreased the simulation time significantly, down to a few seconds, in contrast with the finite element analysis that sometimes can take hours. The models reported in this paper exhibit great potential for rapid and facile design and optimization of shape-engineered soft actuators. View Full-Text
Keywords: microtube pneumatic actuator; Euler–Bernoulli beam model; line-segment model; poly(dimethylsiloxane) (PDMS); soft robot microtube pneumatic actuator; Euler–Bernoulli beam model; line-segment model; poly(dimethylsiloxane) (PDMS); soft robot
Show Figures

Graphical abstract

MDPI and ACS Style

Ji, M.; Li, Q.; Cho, I.H.; Kim, J. Rapid Design and Analysis of Microtube Pneumatic Actuators Using Line-Segment and Multi-Segment Euler–Bernoulli Beam Models. Micromachines 2019, 10, 780.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop