Reliability Estimation of Towed Grader Attachment Using Finite Element Analysis and Point Estimation
| Autor: | Adela-Eliza Dumitrascu, Dorin-Ion Dumitrascu, Doina Valentina Ciobanu, Cristin Olimpiu Morariu |
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| Rok vydání: | 2018 |
| Předmět: |
Estimation
Computer science 05 social sciences 0211 other engineering and technologies 02 engineering and technology 050601 international relations Confidence interval Finite element method 0506 political science Reliability engineering Physics::Fluid Dynamics Mechanics of Materials 021105 building & construction Point estimation towed grader reliability estimation finite element analysis (FEA) Weibull distribution confidence interval Reliability (statistics) |
| Zdroj: | Transactions of FAMENA Volume 42 Issue 1 |
| ISSN: | 1849-1391 1333-1124 |
| Popis: | The paper presents an analysis of the reliability of front blade, rear blade and frame of the towed grader as well as experimental validation of the results obtained from the finite element analysis. The analyzed prototype was designed for maintenance and repair of forest roads and equipped with two types of blades for cleaning and levelling the ground surface. Lifetimes of towed grader attachments can be estimated with high accuracy using three-parameter Weibull distribution. The values of the location parameter γ were determined by using the maximum values of the correlation coefficient, while the method of maximum likelihood was used for the point estimation of the parameters. Because higher values of the shape parameter had been obtained, the point estimation and estimation with confidence intervals of components lifetimes were performed. The analysis of the results indicates that the used assumptions may not fully take the complex stresses encountered in use into account. |
| Databáze: | OpenAIRE |
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