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java application for springback analysis of composite plates

ADVANCES IN ENGINEERING SOFTWARE 2014年 72卷 77-84页

作者： Padovec, Zdenek Shanel, Vit Ruzicka, Milan Dolejs, Norbert Czech Tech Univ Fac Mech Engn Dept Mech Biomech & Mechatron Prague 16607 Czech Republic Letov Letecka Vyroba Sro Prague 19902 Czech Republic

The use of hi-tech thermoplastic matrices (e.g. PEKK, PEEK or PPS) in carbon fiber-reinforced composites is growing, mainly in the aircraft industry. The manufacturing process is carried out at higher temperatures, which leads to residual stresses and dimensional changes of the manufactured part. Our work is focused on making an analytical prediction of the springback angle of C/PPS laminate with textile reinforcement. Better prediction will make the manufacturing tool more precise. Our analytical model took into account the temperature change, the moisture change and resin shrinkage during the cure cycle (which is crucial for semi-crystalline matrices). The analytical model is based on classical lamination theory (CLT) and an equation for through thickness characteristics. The description of the model was written in Matlab code, which was subsequently transformed into java with GUI for easier input of the characteristics of the composite (lay-up, materials, angle of the layer, radii, volumetric fiber fraction and characteristics of the textile reinforcement-number of threads in warp and weft direction, thickness, type of weave, etc.) The results from our program were compared with the results measured by the manufacturer, and good agreement was achieved. (C) 2013 Elsevier Ltd. All rights reserved.

关键词： Analytical solution java application Composite Thermoplastic matrix Fabrics Springback phenomenon

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Simulation of stability using java application for Pareto design of controllers based on a new multi-objective particle swarm optimization

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MATHEMATICAL AND COMPUTER MODELLING 2011年第5-6期54卷 1584-1607页

作者： Mahmoodabadi, M. J. Bagheri, A. Mostaghim, S. Arabani Bisheban, M. Univ Guilan Dept Mech Engn Fac Engn Rasht Iran Univ Guilan Dept Comp Engn Fac Engn Rasht Iran

In this paper, java programming with applets for internet-based control education of two mechanical systems are presented. First, a new multi-objective optimization method is applied to obtain the Pareto frontiers of some non-commensurable objective functions in the design of linear state feedback controllers for an inverted pendulum and a ball-beam system. Second, the simulations of the problems were developed with java applets and its results are given. The obtained results and analyses demonstrate that this multi-objective method presented in this paper operates very well in terms of convergence speed, global optimality, solution accuracy, and algorithm reliability. (C) 2011 Elsevier Ltd. All rights reserved.

关键词： Particle swarm optimization Multi-objective optimization java application Linear state feedback control

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jSimMacs for GROMACS: A java application for Advanced Molecular Dynamics Simulations with Remote Access Capability

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JOURNAL OF CHEMICAL INFORMATION AND MODELING 2009年第10期49卷 2412-2417页

作者： Roopra, Sanjit Knapp, Bernhard Omasits, Ulrich Schreiner, Wolfgang Upper Austrian Univ Appl Sci Dept Bioinformat A-4232 Hagenberg Austria Med Univ Vienna Unit Med Stat & Informat Sect Biomed Comp Simulat & Bioinformat A-1090 Vienna Austria

Molecular dynamics (MD) is a technique to simulate movements of molecular structures to understand their functional behavior. GROMACS is a software package primarily developed for biological MD and offers a huge amount of possible options and settings for tailoring the simulations. This makes it powerful but also complicated to handle. We introduce jSimMacs, a java application for creating molecular dynamics projects in GROMACS. It simplifies the handling of files and options via an intuitive user interface. Users unexperienced in MI) can work aiong prepared lines,. while experts. may enjoy a significant'rielief from the tedium of typing and scripting. Furthermore, jSimMacs supports 3D interactivity and the launch of'remote projects on other computers accessible via networks. Thus, jSimMacs not only opens GROMACS to a broader public but also eases the burden of performing series of MD runs, as necessary in parameter studies.

关键词： technique application parameter studies java application access capability Technology molecular structure remote access Molecular Dynamics Molecular Dynamics Simulation

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Finite Element Analysis of Thin Rectangular Plate Subjected to Uniformly Distributed Transverse Load: a java application

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INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH IN AFRICA 2015年 15卷 107-122页

作者： Amadou, Adamou Olisaemeka, Osadebe Univ Nigeria Dept Civil Engn Nsukka Nigeria Shell Nigeria Explorat & Prod Co Lagos Nigeria

The present work developed a computer application for the finite element analysis of thin rectangular plates under uniformly distributed transverse load. The software, which was developed using java programming language, is very user-friendly and flexible in the choice of the boundary conditions and mesh size. The choice of java programming language was guided by its high memory management, which, in turn had a positive effect on the software runtime. The finite element analysis of a Kirchhoff isotropic plate under a uniformly distributed transverse load was carried out using the software. The results obtained agreed accurately with solutions available in literature. Error analysis conducted on the results confirmed that accuracy generally increases with an increase in the number of elements used in the discretization process. Specifically, for a 16 x 16 discretization, an accuracy ranging from 98.41 to 100 percent, and 95.83 to 100 percent was achieved for the five sets of boundary conditions handled, for deflections at the plate's center and bending moments respectively.

关键词： Finite element Thin plate Isotropic plate Kirchhoff plate java application

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A java application for the failure rate prediction using feed forward neural networks 8

A Java application for the failure rate prediction using fee...

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8th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)

作者： Ene, Alexandra Stirbu, Cosmin Univ Pitesti Pitesti Romania

ISBN: (纸本)9781509020478

In this paper we show the possibility to use feed forward neural networks for failure rate prediction, and this can be used for improving predictive maintenance. We use a series of real values that represent the failure rate of a radio-reception system, and describe a java application that we developed, that simulates a feed forward neural network which is trained to predict, based on the available series of failure rate values, the next failure rate value. We use a one hidden layer neural network that has a single output, the predicted value. The inputs of network are analog, continuous values between 0 and 1, and represent the previous known values of failure rate. Using the software, we used different numbers of input (2, 3, and 5) and the accuracy of prediction is compared for these different numbers.

关键词： feed forward neural network predictive maintenances java application

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sscMap: An extensible java application for connecting small-molecule drugs using gene-expression signatures

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BMC BIOINFORMATICS 2009年第1期10卷 236-236页

作者： Zhang, Shu-Dong Gant, Timothy W. Univ Leicester MRC Toxicol Unit Leicester Leics England Queens Univ Belfast CCRCB Belfast Antrim North Ireland

Background: Connectivity mapping is a process to recognize novel pharmacological and toxicological properties in small molecules by comparing their gene expression signatures with others in a database. A simple and robust method for connectivity mapping with increased specificity and sensitivity was recently developed, and its utility demonstrated using experimentally derived gene signatures. Results: This paper introduces sscMap (statistically significant connections' map), a java application designed to undertake connectivity mapping tasks using the recently published method. The software is bundled with a default collection of reference gene-expression profiles based on the publicly available dataset from the Broad Institute Connectivity Map 02, which includes data from over 7000 Affymetrix microarrays, for over 1000 small-molecule compounds, and 6100 treatment instances in 5 human cell lines. In addition, the application allows users to add their custom collections of reference profiles and is applicable to a wide range of other 'omics technologies. Conclusion: The utility of sscMap is two fold. First, it serves to make statistically significant connections between a user-supplied gene signature and the 6100 core reference profiles based on the Broad Institute expanded dataset. Second, it allows users to apply the same improved method to custom-built reference profiles which can be added to the database for future referencing. The software can be freely downloaded from http://***/NET/sscMap.

关键词： Gene Signature java application Reference Profile Treatment Instance Field Separator

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A Small java application for Learning Blockchain 9

A Small Java Application for Learning Blockchain

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9th IEEE Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON)

作者： Liu, Xing Kwantlen Polytech Univ Dept Comp Sci & Informat Technol Surrey BC Canada

ISBN: (纸本)9781538672662

This paper introduces a small java application named ChainTutor for learning basic Blockchain concepts. Although the term Blockchain is widely known and Blockchain technologies are finding applications in various areas such as banking, healthcare and Internet of Things, some concepts of Blockchain are not easy for beginners to understand. Fully text-based tutorials are often difficult to follow. General picture of Blockchain operations gets lost in lengthy textual descriptions. With the java application introduced in this paper, users can experiment with key Blockchain concepts through a graphical user interface. They can generate keys, hashes, transactions, blocks and wallets. They can see the low level details of a blockchain such as encryption keys and hashes. They can see how mining works and how blocks are added to a blockchain. Parameters of a blockchain can also be varied in order to observe their impact on performance or even to make a blockchain invalid. The java application is intended to be used in classroom environment by instructors when they teach introductory Blockchain courses.

关键词： Blockchain learning tool java application

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Detection of Moving Objects with Ultrasonic Radar 3

Detection of Moving Objects with Ultrasonic Radar

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3rd International Conference on Intelligent Systems, Advanced Computing, and Communication, ISACC 2025

作者： Nalla, Suresh Rakshitha, K. Kumar, K. Sai Samad, M.D. Nalla Narasimha Reddy Education Society's Group of Institutions ECE Dept Telangana Hyderabad 500088 India

ISBN: (纸本)9798331523893

An electronic device such as a radar is one which uses electromagnetic waves to measure the height, range, direction, or the speed of an object, which could be either static or in motion. There is a growing demand for efficient object detection systems in robotics, autonomous vehicles, and smart surveillance. This paper presents an ultrasonic sensor-based system for object detection in 360-degrees. The system is supposed to provide continuous rotation during which the environment would be fully scanned so that immediate detection of different objects of metallic as well as non-metallic can be done. Experimental results demonstrate the system's capability to accurately detect objects at various distances and orientations with a focus on minimizing measurement errors and enhancing detection efficiency. Finally, the proposed method significantly improves the reliability of object detection in dynamic environments. © 2025 IEEE.

关键词： Arduino Uno 328 Buzzer Geared motor java application LED Motor Driver Ultrasonic Sensor

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THOR: A performance analysis tool for java applications running on multicore systems

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IBM JOURNAL OF RESEARCH AND DEVELOPMENT 2010年第5期54卷 4:1-4:17页

作者： Teng, Q. M. Wang, H. C. Xiao, Z. Sweeney, P. F. Duesterwald, E. IBM China Res Lab Beijing 100193 11 Peoples R China IBM China Res Lab Shanghai 201203 31 Peoples R China IBM China Res Lab Shanghai 200131 31 Peoples R China IBM Res Div Thomas J Watson Res Ctr Hawthorne NY 10532 USA TJ Watson Res Ctr High Product Tools Team Hawthorne NY USA

The growing scale of available commercial multicore systems has increased the need for concurrent programming, because these systems expose hardware parallelism to the programmer that must be explicitly managed in software. Commercial software developers that are traditionally skilled in sequential programming are now forced to reason about concurrency to exploit multicore parallelism. More than ever, this new group of concurrent programmers has to rely on performance tools for help. This paper introduces a new tool called THOR, which addresses the complexities introduced by multicore parallelism by organizing views in terms of java (R) threads and using vertical profiling techniques to understand the state of a java thread at all layers of the execution stack. Data collection supports visualization by tagging each trace event with a corresponding thread identifier and with a time-stamp from the machine's high-resolution timer. By exhaustively tracing fine-grain events, such as operating system context switches and java lock contention, data collection allows a user to utilize visualization to reconstruct the precise behavior of his application. In this paper, we present the details of the THOR architecture and design. THOR is currently available from IBM alphaWorks (R) as part of the multicore software development kit.

关键词： sequential program java application Multi-core processors Visualization java programming language THOR Computer personnel Synclitism parallelism Concurrency java THREADS Parallel programming timestamp

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Multi-parameter approximation of stress field in a cracked specimen using purpose-built java applications

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FRATTURA ED INTEGRITA STRUTTURALE 2015年第33期9卷 120-133页

作者： Vesely, V. Sobek, J. Tesar, D. Frantik, P. Pail, T. Seitl, S. Brno Univ Technol Fac Civil Engn Inst Struct Mech Brno Czech Republic Acad Sci Czech Republ Vvi Inst Phys Mat Brno Czech Republic

A quality of multi-parameter approximation of the stress and displacement fields around a crack tip in a non-brittle material test specimen is studied in the paper. The stress field approximation using Williams power series is intended to be utilized for estimation of the nonlinear zone extent which potentially plays a role within methods for determination of true values of fracture parameters of materials exhibiting nonlinear failure. Considering the fact that in the case of elastic-plastic and especially quasi-brittle materials the size of this zone is substantial in comparison to the specimen dimensions, it is necessary to take a large region around the crack tip into account for this task. An automatic utility created to determine the values of coefficients of the higher order terms of Williams power series by usage of over-deterministic method applied on results of finite element analysis of arbitrary mode I test geometry is one of the tested procedures. The second one provides a backward reconstruction of the crack-tip stress field analytically by means of truncated Williams expansion. The developed procedures are based on the support of java programming language and considerably simplify analyses of the mechanical fields' description in a farther distance from the crack-tip. The presented research is focused on optimization of selection of FE nodal results for improvement of accuracy of the approximation.

关键词： Cracked specimen Near-crack-tip fields Williams expansion Higher order terms Stress field reconstruction Finite element analysis java application

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