... aluminum alloys, magnesium alloys and boron steels in automotive industry is increasing to reduce vehicle weight and increase crash performance. The use of these relatively new materials requires advanced and reliable techniques to a) obtain data on material properties and flow stress, b) predicting springback and fracture in bending and flanging, c) selecting lubricants and die materials/coatings for stamping and forging and d) designing tools for blanking and shearing. In addition, designing the process and tooling for a) hot stamping of boron steels, b) warm forming of Al and Mg alloys, and c) optimizing the use of servo-drive presses require advanced Finite Element based simulation methods. CPF is conducting R&D in most of these topics and also in many hot and cold forging related topics. This paper gives an overview of this research and discusses how the research results are applied in cooperation with industry. Keywords: Metal Forming, Sheet metal, Forging, FEM 1 INTRODUCTION The Center for Precision Forming (CPF) has been established with funding from the National Science Foundation (NSF) and a number of companies (www.cpforming.org). CPF is an outgrowth of the Engineering Research Center for Net Shape Manufacturing (ERC/NSM – www.ercnsm.org) and conducts research in sheet metal forming while ERC/NSM focuses on cold and hot forging related R&D projects. Both Centers work closely with industry under contract. Thus, the graduate students (MS and PhD level) as well as post...
Words: 3894 - Pages: 16
...Design of Body Slip Angle Observer Based on Nonlinear Tire Model for Electric Vehicle Stabilization Control with In-Wheel Motors Geng Cong, Hori Yoichi (The University of Tokyo) Abstract: Body slip angle is important for electric vehicle stabilization control with in-wheel-motors. However，as sensors to measure body slip angle are very expensive, it needs to estimate β from variables measurable. The most difficult forβestimation is that the strong non-linear characteristics of vehicle, especially non-linear characteristics of tire force makes vehicle model parameters change greatly as vehicle running in nonlinear conditions. This paper proposes an observer based on nonlinear tire model which can describe the tire lateral force in its nonlinear region. Simulation and experimental analysis demonstrate the observer’s effectiveness, especially when the vehicle running in nonlinear cornering regions. Key words: electric vehicle, vehicle stabilization control, body slip angle, nonlinear observer, nonlinear tire model 1. Introduction In recent years, considering environmental protection and energy conservation, electric vehicles (EVs) are intensively developed. Due to the improvement of motor design and control technology, modern configurations are developed for EV. One of the latest configurations is motor-in-wheels, which means motors can be fitted into all the driving wheels of EV independently. For vehicle chassis control, such configuration brings much more advantages...
Words: 1873 - Pages: 8
...Management of Change MHR 650, Sec 011 Tuesday 12pm-3pm TRS 2-164 Fall 2014 Instructor Information: Name: Frank Miller Email: frank.miller@ryerson.ca Office: TRS 2-115 Dropbox: TRS 1-002 Office Hours: Monday 4-6pm, Tuesday 11am-noon, (or by appointment) COURSE Information: Prerequisites and/or Exclusions: MHR 405 or HTH 601 or Direct Entry Posting of Grades and Feedback on Work: Grades on assignments and tests will be posted on the Blackboard site for the course. Students who do not want their course grades posted must inform the instructor in writing before the first assignment/test is due. Students will receive the results of their first test/term work before the final deadline for dropping courses without academic penalty. All assignments submitted for grading will be handed back within three weeks, except for the final assignment/test which will be available after official final grades are available. E-mail Communication: Students must use the e-mail address listed above to communicate with the instructor. E-mails and Blackboard bulletin board postings sent Monday to Friday will be answered within 24 hours. Students are required to activate and maintain a Ryerson Matrix e-mail account. This shall be the official means by which you will receive university communications. Faculty will not respond to student enquiries from any other e-mail address. See Policy #57 found at www.ryerson.ca/senate/policies for further information on...
Words: 4154 - Pages: 17
...important element in representing the personality of a country. There is a tendency that Indonesian young generation do not recognize their cultures. "Desa Maya Budaya Indonesia" (DayaBaya) : Virtual Village with Indonesian Culture - is a game developed to introduce Indonesian culture to young generation. This game simulates a virtual village located in a region in Indonesia that can be developed according to the player’s desires and wishes. The simulation will help young generation to know various cultures of Indonesia at the early stage. This game has also been tested on 48 students from Vocational High School,and a result from this experiment shows that the game improves user’s knowledge about cultures. II. PREVIOUS STUDY In the previous studies, the DayaBaya game has been developed. In this section, the game for education, game plan, game design and game development will be explained. A. Game For Education Currently, the increased power and flexibility of computer technology is contributing to renew interest in games and simulations. This development coincides with the current perspective of effective instruction in which meaningful...
Words: 3417 - Pages: 14
...|Lesson Synopsis: | This unit develops an understanding of electrostatics by the use of demonstrations, simulations, and modeling. The general theme is that the current model of matter consisting of electrically neutral atoms composed of charged particles is integral to the understanding of electrical forces. The lesson begins with traditional activities of charging objects by friction and comparing electrostatic forces to magnetostatic forces. The traditional experiments are explained in terms of the model of an atom, and the “attract and repel force rules” are explored and expanded. Devices to create, store, and measure charge are utilized in experiments. The formal theory of Coulomb’s law is introduced, and problems are assigned utilizing that theory. Elements of the historical development of electrostatics and planetary model of the atom are researched, and students have an assignment describing contributions of historically important scientists. Additional concepts of electric fields, potential difference, and properties of conductors and insulators are developed through experiment, demonstration, and discussion. TEKS: |P.5 |The student knows the nature of forces in the physical world. The student is expected to: | |P.5A |Research and describe the historical development of...
Words: 7361 - Pages: 30
...10th International Conference on Stability of Ships and Ocean Vehicles 181 A PROCEDURE FOR DETERMINING A GM LIMIT CURVE BASED ON AN ALTERNATIVE MODEL TEST AND NUMERICAL SIMULATIONS Adam Larsson, Det Norske Veritas Adam.Larsson@dnv.com Gustavo Ribbe, Det Norske Veritas Gustavo.Ribbe@dnv.com Anna-Lea Routi, STX Finland Cruise Oy Anna-Lea.Routi@stxeurope.com ABSTRACT This paper presents an alternative approach of the Weather Criterion (IMO Res. A.749(18) Chapter 3.2) and the Alternative Assessment of the Weather Criterion (MSC.1/Circ.1200 & MSC.1/Circ.1227). A short study of first principle model tests performed in irregular waves for a very large passenger cruise ship design is carried out. Following this study, a calculation procedure for determining a Weather Criterion GM limit curve is based on the results from the model tests in combination with numerical simulations. The applicability of the Weather Criterion is discussed for the cruise ship design based on the new model tests and the results from the numerical simulations, confirming that the criterion is not the limiting requirement for the examined ship design. Proposals for instructions are presented in order to improve accuracy of model test results and facilitate the possibility to derive limiting GM values based on model tests. Keywords: weather criterion, metacentric height, limit curve, roll, damping, irregular wave, sea state 1. INTRODUCTION The IMO Weather Criterion, resolution A.749(18) Chapter...
Words: 4898 - Pages: 20
...ANOVA and Nonparametric Simulation For this assignment students are tasked with completing an online simulation and applying statistical research. To complete this paper we as students need to answer three basic questions. What are three lessons you learned relative to ANOVA and nonparametric tests? As a result of using this simulation, what concepts and analytic tools will you be able to use in your workplace (i.e., how do you expect to apply what you learned)? Based on your experience, what additional information would you recommend to the key decision maker in the simulation to solve the challenge given? For the first question relating to lessons learned; ANOVA is a test to compare the means of several populations. ANOVA doesn’t answer which population might have a larger or smaller mean: it only answers whether all the means are equal. This is done by evaluating the variances within the groups and between the groups being compared (Doane & Seward, 2007). ANOVA can be used to evaluate if different factors have a different effect on a variable. The factors are categorical variables with different levels. For instance, the context of the simulation is a software development company that wants to know if factors like project difficulty, experience, or requirement changes affect the productivity of the software engineers. Productivity is measured by the average number of lines of code written per day by a programmer. An ANOVA test can shed light as to whether productivity...
Words: 429 - Pages: 2
...multi-sensor information synchronization is an important reason affecting the positioning accuracy. In order to ensure its correction and effectiveness of combination-location information fusion algorithm，as well as to compare and evaluate different fusion algorithms, research on the pretreatment method of the multi-sensor information is necessary. This paper takes the example of resonant voltage measurement with high reliability as the test program of compensation capacitor. To improve the extent of the precise location in point of failure as well as to improve the continuity and real-time of data feedback, finally this paper selects the GPS / DR / MM combination- orientation program to provide positioning information for the dynamic detection system, by comparing a variety of positioning systems. In order to get the most accurate output data, the paper use the adaptive federated Kalman filter algorithm to do the multi-sensor data fusion. Then the paper exchanges the positioning subsystem data and test subsystem data through Ethernet. Using the method of setting the discriminated threshold to discriminate and count the test results, and finally got the completion of the fault locating function. After that, by using electronic...
Words: 466 - Pages: 2
...Quantitative Critical Appraisal To commence this quantitative analysis the start point was to formulate a robust quantitative question in order to provide direction for the literature search. Newell & Burnard (2006) suggest that a strong question informs the research design, research method, the population, the intervention and the outcomes of interest. There are three factors for focusing questions 1. Facilitating the search for relevant evidence, 2. deciding whether the evidence is applicable to the group in question, and 3. sorting best evidence from weaker, less valid evidence (LoBiondo-Wood et al, 2002). The question was framed around the elements of PICO; standing for “patients,” “intervention,” “comparison,” and “outcome” (Boston University Medline Plus, 2000a; Craig & Smyth, 2002). The PICO approach was developed around Evidence-Based Medicine (Richardson & Wilson, 1997), and was therefore designed for clinical studies, it can though be adapted to any research context. | | |People, patients or population - who are you asking the question about? | |Intervention - what intervention are you interested in? | |Control or comparison - what are you comparing the intervention to? ...
Words: 4518 - Pages: 19
...! University of Illinois at Springfield Journal Article Review By Sadanand Patil. Instructor: Hamed Saremi. ABSTRACT: In this paper we are going to review three journal articles based on Business Process Modeling and Simulation. These articles explain the importance of business process modeling and simulation in business processes. Authors discuss how modeling and simulation is done. We start with some information about the business processes explained by the authors then we will discuss business process modeling and methods of modeling. We will also go through how simulation modeling helps to evaluate alternate business process strategies. We will also discuss benefits of simulation of business process modeling. The purpose of this paper is to give readers idea about the journal articles, whether they are worth reading and importance of these articles and how these articles will help to understand Business Process Modeling and Simulation. INTRODUCTION: Ray J. Paul, Vlatka Hlupic and George M. Giaglis explained in their article that due to increasing competition, organizations need to make major changes in their each step of business process. BPR (Business Process Re-engineering) helps an organization to enhance the business process and also creates new ways in order to gain a competitive edge in a real market. BPR helps to redesign the business system for the enhancement of an organization. Many organizations faced a failure because of many factors...
Words: 2589 - Pages: 11
...assumed that the returns are normally distributed and there is no cross-sectional dependence between stock returns. The simulation study for event days are implemented by assuming uniform distribution. Methodology and Data The methodology involves the use of CAPM model to estimate the returns of stocks. The stock portfolio is composed of 10, 25 and 50 stocks. Because of thin trade stock motivation the trade to trade adjustment was made. The estimation is based on 250 trading days total and 247 of this period corresponds to parameter estimation and the rest, t-1, t, t+1 is used for event study. The parameter estimations were based on OLS with heteroskedasticity correction. The abnormality is detected by analyzing difference between market return and expected return from CAPM model. Returns for event days are the subjects of test statistics. The examined statistics were based on t-test with cross sectional independence, t-test with standardized abnormal return and t-test with adjusted standardized abnormal return. These tests are the parametric tests for abnormality, the authors also conducted non-parametric test such as rank test, sign test and generalized sign test. The event days are specified by simulation and uniform distribution is assumed. After event day specification the impact of 0.5% and 2% are added to abnormal return on the event day. The simulation is repeated 1000 times to achieve a distribution...
Words: 409 - Pages: 2
...Disaster Recovery Plan Company Overview Strategic Business Solutions is a Veteran-owned small business with less than fifty employees and the business goal is to continue specializing in Information Technology (IT), project management, and business development solutions. Our main projects involve Internet-based E-commerce solutions. The following diagram depicts our current network, which is PCI compliant and can handle high-traffic websites: Risk Assessment Critical business processes Disruption of an information resource is not a disaster in itself, unless it is related to a critical business process, for example, an organization losing its revenue generating business process due to an information system failure. Other examples of potential critical business processes may include: * Production of finished goods * Advertising of the organization’s product(s) to be sold * Selling of the enterprise’s products or services * Receiving payments * Dispatching of finished goods * Provision of final services * Legal and regulatory compliance * Safeguarding of private and confidential data and other Information assets * Logistics services in the organization * Paying the employees Internal, external, and environmental risks Although all forms of corporate risks and potential damage can’t be avoided, but a realistic objective is to ensure the survival of the organization by establishing a culture that will identify and manage...
Words: 1568 - Pages: 7
...weaknesses. The method of analysis used for this report are examining the Movenpick’s application form and interviewing the hotel’s Human Resources specialist-Mrs. Thoa. After analyzing the raw material from Mrs. Thoa, the results were produced. The selection process follows 3 steps with valid and reliable methods and a set of criteria: application form, interview and performance-simulation test. The strengths of those selection devices are enormous since it helps with filtering suitable candidates who meet certain key criteria with right attitude from the application form. The interview is the phase where the company can assess and gain a deeper understanding about the candidates and the final step which is performance-simulation can actually assist managers in predicting and evaluating candidates’ future performance. However; there are some weaknesses concerning cost and time that were identified while the raw information is analyzed. Before each hiring period, the hotel has to prepare everything carefully in advance, from scheduling, setup to training and report and the period of 2 months trial simulation would be too long and wasted on disqualified candidates. Therefore, the weaknesses need minimizing to enhance the overall effectiveness and efficiency of the whole process. It is recommended that the Hotel should focus a lot in training staffs with related skills and applying internet and technology such as release online version of application forms, develop software and interview...
Words: 2755 - Pages: 12
...Agent-based social simulation: dealing with complexity Nigel Gilbert Centre for Research on Social Simulation University of Surrey Guildford UK n.gilbert@soc.surrey.ac.uk 18 December 2004 While the idea of computer simulation has had enormous influence on most areas of science, and even on the public imagination through its use in computer games such as SimCity, it took until the 1990s for it to have a significant impact in the social sciences. The breakthrough came when it was realised that computer programs offer the possibility of creating ‘artificial’ societies in which individuals and collective actors such as organisations could be directly represented and the effect of their interactions observed. This provided for the first time the possibility of using experimental methods with social phenomena, or at least with their computer representations; of directly studying the emergence of social institutions from individual interaction; and of using computer code as a way of formalising dynamic social theories. In this chapter, these advances in the application of computer simulation to the social sciences will be illustrated with a number of examples of recent work, showing how this new methodology is appropriate for analysing social phenomena that are inherently complex, and how it encourages experimentation and the study of emergence. Social simulation The construction of computer programs that simulate aspects of social behaviour can contribute...
Words: 7684 - Pages: 31
...System Integrity and Validation Vincent A. Davis, Jr. ACC/542 October 21, 2013 Irene Branum Preface In the last few weeks the accounting firm, Team D has looked into characteristics of Kudler Fine Foods and provided recommendations to update and replace existing components of the IT system. These recommendations made can yield in the company’s increased productivity, profitability, and remove potential threats. Team D determined that industry specific software is useful in comparison to customized software. Four main modules such as payroll, account payable, accounts receivable, and inventory were developed as well as enhancement of each flowchart based on the appropriate system. Team D examined the database completeness at Kudler’s intranet and developed a pivot table; therefore, making the decision-making process easy. External and internal risks were analyzed and internal control points were developed by incorporating both risks and controls into a flowchart. Team D also showed why findings and recommendations are more useful to the company in comparison to SAS70 and SAS94 audits. The team identified events that will lessen the dependence on auditing through computer and showed a brief description how the audit should be conducted. System Integrity and Validation Kudler Finer Foods has looked for recommendations regarding the company, to include computer information system, automated process of an accounting information system, data table analysis, internal control...
Words: 1182 - Pages: 5
