Compliances Calculation and Performance Analysis of the Novel Half Hybrid Flexure Hinge

2013 ◽  
Vol 303-306 ◽  
pp. 1714-1720 ◽  
Author(s):  
Qing Ling Liu
Keyword(s):  
Finite Element ◽  
Performance Analysis ◽  
Theoretical Calculations ◽  
Finite Element Simulations ◽  
Flexure Hinge ◽  
The Novel ◽  
Compact Structure ◽  
And Performance ◽  
The Right ◽  
Better Than

A novel flexure hinge named right circular corner filleted half hybrid flexure hinge was advanced. Based on the Castigliano second theorem, the compliance formulas of the novel flexure hinge were formulated. The theoretical calculations and the finite element simulations were performed simultaneously, the similar results were obtained which indicated the correctness of the compliance formulas. The influence of the geometric parameters of the novel flexure hinge on its performance was analysed. Compared with right circular corner filleted double hybrid flexure hinge, the compliance and sensitivity to the load of the novel half hybrid flexure hinge were better than that of the right circular corner filleted double hybrid flexure hinge. All of the above analysis results indicated the novel flexure hinge are more suitable for application in the compact structure and large displacement.

Design and Performance Analysis of Double C-Type Flexure Hinges

2017 ◽  
Vol 9 (4) ◽  
Author(s):  
Lifang Qiu ◽  
Gang Huang ◽  
Siqi Yin
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Analysis ◽  
Flexure Hinge ◽  
Equivalent Stiffness ◽  
Bending Performance ◽  
Flexure Hinges ◽  
Element Simulation ◽  
And Performance ◽  
Better Than

This paper proposes a series of double C-type flexure hinges for lamina emergent mechanisms (LEMs), designs the structure, and deduces the formula of the equivalent stiffness of the double C-type flexure hinge. Theoretical calculation and finite element simulation analyses of the design examples are used to verify the correctness of the equivalent stiffness calculation formula. In order to improve the bending performance of the flexure hinges, we propose a method to remove some materials of the semicircle of the flexure hinges according to certain rules. Then, the structure of the double C-type flexure hinge is further improved. Finally, the performance of the improved and unimproved double C-type flexure hinges is compared through the finite element simulation analysis, and the results show that the bending performance of the improved double C-type flexure hinge is better than the unimproved double C-type flexure hinge, while the antitensile properties undergo no significant decline.

FINITE ELEMENT SIMULATION AND PERFORMANCE ANALYSIS OF A NOVEL BIOABSORBABLE STENT FOR THE TREATMENT OF AORTIC COARCTATION

2021 ◽  
Author(s):  
Flávio Santos ◽  
Bruno Agostinho Hernandez ◽  
Mateus Piccin Duarte de Souza ◽  
Aron Andrade ◽  
EDSON CAPELLO SOUSA
Keyword(s):  
Finite Element ◽  
Performance Analysis ◽  
Finite Element Simulation ◽  
Aortic Coarctation ◽  
Element Simulation ◽  
And Performance

Design and performance analysis of the novel shell-and-tube heat exchangers with louver baffles

2017 ◽  
Vol 125 ◽  
pp. 870-879 ◽  
Author(s):  
Yonggang Lei ◽  
Yazi Li ◽  
Shenglan Jing ◽  
Chongfang Song ◽  
Yongkang Lyu ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Heat Exchangers ◽  
The Novel ◽  
Shell And Tube ◽  
And Performance

Dynamics of a compliant mechanism based on flexure hinges

2005 ◽  
Vol 219 (2) ◽  
pp. 225-235 ◽  
Author(s):  
K-B Choi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Compliant Mechanism ◽  
Equation Of Motion ◽  
Rigid Bodies ◽  
Flexure Hinge ◽  
Flexure Hinges ◽  
Better Than ◽  
Element Method

This paper presents a novel equation of motion for flexure hinge-based mechanisms. The conventional equation of motion presented in previous work does not adequately describe the behaviours of rigid bodies for the following reasons: firstly, rotational directions for a transformed stiffness lack consistency at the two ends of a flexure hinge; secondly, the length of the flexure hinge is not considered in the equation. The equation of motion proposed in this study solves these problems. Modal analyses are carried out using the proposed equation of motion, the conventional equation of motion found in previous work, and a finite element method. The results show that the proposed equation of motion describes the behaviours of the rigid bodies better than the conventional equation of motion does.

Corner-Filleted Flexure Hinges

2000 ◽  
Vol 123 (3) ◽  
pp. 346-352 ◽  
Author(s):  
Nicolae Lobontiu ◽  
Jeffrey S. N. Paine ◽  
Ephrahim Garcia ◽  
Michael Goldfarb
Keyword(s):  
Finite Element ◽  
Closed Form ◽  
Finite Element Simulation ◽  
Analytical Approach ◽  
Flexure Hinge ◽  
Closed Form Solutions ◽  
Flexure Hinges ◽  
Element Simulation ◽  
Model Predictions ◽  
The Right

The paper presents an analytical approach to corner-filleted flexure hinges. Closed- form solutions are derived for the in-plane compliance factors. It is demonstrated that the corner-filleted flexure hinge spans a domain delimited by the simple beam and the right circular flexure hinge. A comparison that is made with the right circular flexure hinges indicates that the corner-filleted flexures are more bending-compliant and induce lower stresses but are less precise in rotation. The finite element simulation and experimental results confirmed the model predictions.

scholarly journals The Construction and Performance of a Novel Intergroup Complementary Code

2012 ◽  
Vol 241-244 ◽  
pp. 2475-2481
Author(s):  
Wen Zhun Huang ◽  
Ying Wang ◽  
Zheng Guang Zhou
Keyword(s):  
Theoretical Research ◽  
The Novel ◽  
Code Length ◽  
Zero Correlation ◽  
Zero Correlation Zone ◽  
And Performance ◽  
Orthogonal Code ◽  
Synchronous Cdma ◽  
Correlation Performance ◽  
Better Than

Based on the analyses of intergroup complementary (IGC) codes and zero correlation zone complementary codes, novel IGC codes were proposed to adapt M-ary orthogonal code spreading spectrum system or quasi-synchronous CDMA system. The theoretical research and simulation results show that the main advantages of novel IGC are that under the same code length, the number of the novel IGC code sets are more than that of the intra-group IGC codes; the length of the zero correlation zone is longer than that of the intergroup IGC codes, but shorter than that of the intergroup IGC codes between groups; and under the same code length, the auto-correlation performance of the novel IGC codes is better than that of the IGC codes and both codes are of similar cross-correlation performance.

scholarly journals PENGARUH FISKAL MONETER TERHADAP PEREKONOMIAN INDONESIA

2020 ◽  
Vol 2 (2) ◽  
pp. 203-226
Author(s):  
Rio Kartika Supriyatna ◽  
Dedi Junaedi ◽  
Evinovita Evinovita
Keyword(s):  
Exchange Rate ◽  
Standard Error ◽  
System Reform ◽  
Monetary Stability ◽  
The Exchange Rate ◽  
The Difference ◽  
And Performance ◽  
The Right ◽  
Better Than ◽  
Budget System

ABSTRACTThis study aims to: analyze whether monetary fiscal policy affects the economy (GDP) of Indonesia and examine whether differences in the budget regime affect the fiscal fiscal governance in supporting the achievement of Indonesia's GDP. Research using quantitative analysis methods; The data used are time series 1990-2010, the analysis technique used is multiple regression with dummy variables. The results show that monetary stability - represented by the variable APBN, financing, investment, BI-rate, exports, imports, inflation, exchange rates and budget regime differences - simultaneously significantly influences GDP development. The level of correlation between the independent variables and the variable variable is quite strong with R-squared 0.9969%. This means that the research variables can explain the dynamics of GDP around 99.69%, the effect is influenced by other variables not examined. Partially, from the results of the statistical analysis, it was found that the APBN, investment, BI-Rate, Imports and the exchange rate had an effect and the difference in the budget system regime had a significant effect on the development of GDP. While the variable financing, exports and inflation have no significant effect on GDP. Cost variables can have a real impact if the standard error is raised to 19%. Exports can significantly affect GDP if the standard error is raised to 24%. APBN, investment, BI-Rate and budget regime differences are positively correlated to GDP. While imports and the exchange rate are negatively correlated to GDP. The econometric model of the influence of oneter stability with GDP is as follows: GDP $ = 0.3131 * APBN + 1.8437 * INVEST $ + 7.8384 * BI_RATE - 0.00037 * IMPORT - 0.01226 * EXCHANGE $ + 167.02356 * REZIM1 + 181.1681 * REZIM2 + 197.6315. Relatively, the use of an integrated and performance-based budgeting system is better than a balanced budget system. Likewise the performance-based budgeting system is also relatively better than the integrated budgeting system. This means that the budget system reform in Indonesia has been on the right track so far.Keywords: Indonesia, economy, GDP, budget system, monetary stability

Risk Assessment for Damaged Pressure Tank Cars

2003 ◽  
Author(s):  
Steven W. Kirkpatrick ◽  
Richard W. Klopp
Keyword(s):  
Finite Element ◽  
Research Program ◽  
Finite Element Simulations ◽  
Potential Hazard ◽  
Validation Data ◽  
Pressure Tank ◽  
Course Of Action ◽  
Property Data ◽  
The Right ◽  
Experimental Effort

Following an accident or derailment involving a freight train, emergency response, salvage, and repair personnel need to clear the right-of-way, repair the tracks, and remove the damaged rail cars. If the train contains pressure tank cars the potential hazard and safe handling procedures need to be determined prior to salvage and repair activities. The severity of the damage determines the appropriate course of action such as rerailing or unloading the damaged cars. The operations must avoid the risk to response personnel of a delayed rupture. A research program was performed to establish the validity of the existing industry guidelines for assessment of damaged pressure tank cars. The research program first focused on evaluating the technical foundation for the existing guidelines and the degree to which they have been validated. We then designed a program of experiments and analyses to validate the guidelines and estimate their margins of safety. The experimental effort used laboratory specimens to provide material property data as well as validation data for the analyses. The analyses used three different approaches: nonlinear elasto-plastic finite element simulations for modeling denting behavior, elasto-plastic fracture mechanics for analysis of cracks, and nonlinear finite element simulations combined with local fracture theories to quantify the severity of scores, gouges, and rail bums (longitudinal damage features caused by sliding a tank along a rail). This paper emphasizes the latter aspect of the work.

Primary study of a new permanent magnet flux switching machine over straight and spanned rotor configurations

2016 ◽  
Vol 13 (5) ◽  
pp. 441-446 ◽  
Author(s):  
Mahyuzie Jenal ◽  
Erwan Sulaiman ◽  
Hassan Ali Soomro ◽  
Syed Muhammad Naufal Syed Othman
Keyword(s):  
Finite Element ◽  
Performance Analysis ◽  
Permanent Magnet ◽  
High Speed ◽  
Primary Study ◽  
Element Analysis ◽  
Fundamental Study ◽  
Content Type ◽  
Dimensional Finite Element ◽  
And Performance

Purpose The purpose of this paper is to address a fundamental study and performance analysis of a proposed 6Slots-10Poles permanent magnet flux switching machine (PMFSM) using straight rotor (StR) and 6Slots-8Poles PMFSM with spanned rotor (SpR) structure. Design/methodology/approach Design configuration of the proposed machine was developed using commercial finite element analysis package and JMAG-Designer V.14 software, which provides two-dimensional finite element solver throughout the investigation. An electromagnetic performance analysis is carried out and compared over the two proposed topologies which consist of machines no-load and under-load conditions. Findings This paper demonstrates the finding of the proposed StR structure which consist of more favorable three-phase sinusoidal feature, lower cogging torque and higher output torque. Flux density attributes reveal higher established magnetizing flux concentration in StR compared with SpR. Consequently, the StR structure requires low armature current before it may start to rotate and provides better robust construction with less material consumption and cost. Originality/value This paper describes the novel design of a new PMFSM configuration pertinent for high-speed applications.

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