Design and Analysis of a New Mechanism for a Snake Like Robot

2020 ◽  
Author(s):  
Johnathon Garcia ◽  
Kooktae Lee
Keyword(s):  
Power Loss ◽  
Robot Design ◽  
The Novel ◽  
Loss Minimization ◽  
Positive Power ◽  
Unit Distance ◽  
Novel Structure ◽  
3D Printed ◽  
Numerical Minimization ◽  
Novel Design

Abstract In this paper, a novel snake like robot design is presented and analyzed. The structure described desires to obtain a robot that is most like a snake found in nature. This is achieved with the combination of both rigid and soft link structures by implementing a 3D printed rigid link and a soft cast silicone skin. The proposed structure serves to have a few mechanical improvements while maintaining the positives of previous designs. The implementation of the silicone skin presents the opportunity to use synthetic scales and directional friction. The design modifications of this novel design are analyzed on the fronts of the kinematics and minimizing power loss. Minimization of power loss is done through a numerical minimization of three separate parameters with the smallest positive power loss being used. This results in the minimal power loss per unit distance. This research found that the novel structure presented can be effectively described and modeled, such that they could be applied to a constructed model.

scholarly journals Design and development of a 3D-printed back-pressure regulator

2020 ◽  
Author(s):  
Lee Walmsley ◽  
Emilie Sellier
Keyword(s):  
Low Cost ◽  
Flow Chemistry ◽  
Back Pressure ◽  
The Novel ◽  
Pressure Regulator ◽  
Pump Head ◽  
3D Printed ◽  
Design Software ◽  
Novel Design ◽  
Cost Components

In this communication, we describe the novel design and preparation of a back-pressure regulator that can be used in flow chemistry applications. Using low-cost components that can be readily sourced, a low-cost 3D printer and freeware design software, we developed, and 3D printed a back-pressure regulator that is simple to assemble and resistant to blocking. This device can be used to maintain the pressure of a fluidic system between the pump head to the back-pressure regulator and allows the collector, or collection vessel to be at atmospheric pressure. Ensuring control of pressure within the fluidic system is essential for maintaining consistent flow rates in flow chemistry set ups.

Finite element analysis of the mechanical performance of a zinc alloy stent with the tenon-and-mortise structure

2021 ◽  
pp. 1-9
Author(s):  
Sirui Wang ◽  
Dandan Wu ◽  
Gaoyang Li ◽  
Kun Peng ◽  
Yongliang Mu ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
3D Models ◽  
Zinc Alloy ◽  
The Novel ◽  
Element Analysis ◽  
Novel Structure ◽  
Closed Ring ◽  
Alloy Material ◽  
Biodegradable Stents ◽  
Novel Design

BACKGROUND: Inadequate scaffolding performance hinders the clinical application of the biodegradable zinc alloy stents. OBJECTIVE: In this study we propose a novel stent with the tenon-and-mortise structure to improve its scaffolding performance. METHODS: 3D models of stents were established in Pro/E. Based on the biodegradable zinc alloy material and two numerical simulation experiments were performed in ABAQUS. Firstly, the novel stent could be compressed to a small-closed ring by a crimp shell and can form a tenon-and-mortise structure after expanded by a balloon. Finally, 0.35 MPa was applied to the crimp shell to test the scaffolding performance of the novel stent and meanwhile compare it with an ordinary stent. RESULTS: Results showed that the novel stent decreased the recoiling ratio by 70.7% compared with the ordinary stent, indicating the novel structure improved the scaffolding performance of the biodegradable zinc alloy stent. CONCLUSION: This study proposes a novel design that is expected to improve the scaffolding performance of biodegradable stents.

scholarly journals Design and Development of 3D Printed Catalytically-Active Stirrers for Chemical Synthesis

2019 ◽  
Author(s):  
Matthew Penny ◽  
Stephen Hilton
Keyword(s):  
Chemical Synthesis ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
The Novel ◽  
Mannich Reactions ◽  
Catalytically Active ◽  
3D Printed ◽  
Novel Design ◽  
Preparation And Evaluation

<p>In this present study, we describe the novel design, preparation and evaluation of catalyst-impregnated stirrer beads for chemical synthesis. Using a low-cost SLA 3D printer and freeware design software, a high surface area holder for a magnetic stirrer bead was developed and 3D printed containing <i>p</i>-toluenesulfonic acid. The devices were used to efficiently catalyze Mannich reactions in excellent yields and it was demonstrated that the devices can be re-used up to 5-times with excellent reproducibility.</p>

scholarly journals Design and Development of 3D Printed Catalytically-Active Stirrers for Chemical Synthesis

2019 ◽  
Author(s):  
Matthew Penny ◽  
Stephen Hilton
Keyword(s):  
Chemical Synthesis ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
The Novel ◽  
Mannich Reactions ◽  
Catalytically Active ◽  
3D Printed ◽  
Novel Design ◽  
Preparation And Evaluation

<p>In this present study, we describe the novel design, preparation and evaluation of catalyst-impregnated stirrer beads for chemical synthesis. Using a low-cost SLA 3D printer and freeware design software, a high surface area holder for a magnetic stirrer bead was developed and 3D printed containing <i>p</i>-toluenesulfonic acid. The devices were used to efficiently catalyze Mannich reactions in excellent yields and it was demonstrated that the devices can be re-used up to 5-times with excellent reproducibility.</p>

Optimization for Large or Linear Tunable Stiffness Control With a Concentric Circular Tapered Beam Design

2017 ◽  
Author(s):  
Shane Johnson ◽  
Anton Van Beek ◽  
Zeeshan Qaiser ◽  
Liping Kang
Keyword(s):  
Virtual Work ◽  
Optimum Shape ◽  
The Novel ◽  
Unit Load ◽  
Beam Design ◽  
Unit Load Method ◽  
3D Printed ◽  
Loading Modes ◽  
Tunable Stiffness ◽  
Novel Design

Most examples of structure controlled Tunable Stiffness Mechanisms (TSM) systems have two predefined settings of stiffness, e.g. bi-stiffness behavior, or they have a low range in tunable stiffness. In this research, this problem of control is overcome though optimization of a novel concentric circular tapered spring beam design with the novel design concept of changing the mode of deformation from bending to axial or shear. A Monte Carlo (MC) function is used with an analytical model — the unit load method of virtual work, to determine the optimum shape of two concentric tapered beams where the minimum stiffness is set, and the objective is to achieve linear and/or large stiffness change control. Three optimum designs were 3D printed, tested, and the stiffness vs. loading angle of control was validated with excellent correlation. The optimum design was obtained by changing the dominant loading modes.

Design and Analysis of a Novel Structure Form of Electro-Mechanical Transmission

2013 ◽  
Vol 694-697 ◽  
pp. 497-502
Author(s):  
Jiang Tao Gai ◽  
Shou Dao Huang ◽  
Guang Ming Zhou ◽  
Yi Yuan
Keyword(s):  
Mechanical Transmission ◽  
The Novel ◽  
Structure Form ◽  
Tracked Vehicle ◽  
Power Coupling ◽  
Advantages And Disadvantages ◽  
Vehicle Propulsion ◽  
Novel Structure ◽  
Straight Line ◽  
Planetary Mechanism

In order to search after a new way of the propulsion system of tracked vehicle, a novel structure form of electro-mechanical transmission was developed in this paper, through analyzing the advantages and disadvantages of existing projects of electric drive system for tracked vehicle. It could increase the rate of power exertion obviously and synthesize the mechanical and electrical strongpoint. And based on the structure form, an electro-mechanical transmission was designed with double electromotor added planetary mechanism of steering power coupling and gearshift, considering engineering realization. And then straight-line driving and steering performances of the transmission were calculated which proved that the novel electro-mechanical transmission could meet the requirement of tracked vehicle propulsion well.

scholarly journals A millifluidic chip for cultivation of fish embryos and toxicity testing fabricated by 3D printing technology

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20507-20518
Author(s):  
Petr Panuška ◽  
Zuzana Nejedlá ◽  
Jiří Smejkal ◽  
Petr Aubrecht ◽  
Michaela Liegertová ◽  
...  
Keyword(s):  
3D Printing ◽  
Toxicity Testing ◽  
Toxicity Screening ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Fish Embryos ◽  
3D Printed ◽  
Novel Design

A novel design of 3D printed zebrafish millifluidic system for embryonic long-term cultivation and toxicity screening has been developed. The chip unit provides 24 cultivation chambers and a selective individual embryo removal functionality.

scholarly journals A Novel 4H-SiC MESFET with a Heavily Doped Region, a Lightly Doped Region and an Insulated Region

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 488
Author(s):  
Hujun Jia ◽  
Mengyu Dong ◽  
Xiaowei Wang ◽  
Shunwei Zhu ◽  
Yintang Yang
Keyword(s):  
Breakdown Voltage ◽  
Direct Current ◽  
Oscillation Frequency ◽  
The Novel ◽  
Saturation Current ◽  
Excellent Performance ◽  
Maximum Oscillation Frequency ◽  
Power Added Efficiency ◽  
Novel Structure ◽  
Heavily Doped

A novel 4H-SiC MESFET was presented, and its direct current (DC), alternating current (AC) characteristics and power added efficiency (PAE) were studied. The novel structure improves the saturation current (Idsat) and transconductance (gm) by adding a heavily doped region, reduces the gate-source capacitance (Cgs) by adding a lightly doped region and improves the breakdown voltage (Vb) by embedding an insulated region (Si3N4). Compared to the double-recessed (DR) structure, the saturation current, the transconductance, the breakdown voltage, the maximum oscillation frequency (fmax), the maximum power added efficiency and the maximum theoretical output power density (Pmax) of the novel structure is increased by 24%, 21%, 9%, 11%, 14% and 34%, respectively. Therefore, the novel structure has excellent performance and has a broader application prospect than the double recessed structure.

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