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Sheet Metal Forming Processes using FEM
68,00 € *
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This book particularly addresses the prediction of springback in sheet metal forming process. Sheet metal forming is a process in which a straight length of sheet is transformed into a curved length. It is generally employed in the automobile & aerospace industry to manufacture the curved parts, in the construction of channels, drums, large spherical & cylindrical tanks etc. The major concern in any sheet metal forming process is usually to obtain an accurate and repeatable bend angle due to elastic recovery of the material. Shape discrepancy between the fully loaded and unloaded configurations due to elastic recovery of the material is known as springback. Springback causes the deviation of the final product from the targeted dimensions. Hence the tool design, for a given sheet material and the final product dimension, should be capable of accurately incorporating the elastic recovery. In this book, the prediction of springback and parametric study is carried out for the arc bending and Straight flanging process.

Anbieter: Dodax
Stand: 27.01.2021
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Revenue Management and  Survival Analysis in th...
57,73 € *
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Today, the automobile industry is faced by increasing price competition while profit margins are shrinking. The used car sector is affected the most, amplified by excess supply in day registrations and the impact of the continuing rebate war in the new car sector.André Jerenz develops a price-based revenue management framework to support retailers in establishing better and more profitable pricing strategies, including assigning an initial asking price and the adjustment of price over time. For the profit maximization problem of a used car retailer, the author derives different algorithms for determining optimal strategies by applying stochastic control theory. Within the scope of the demand forecasting component, he proposes the adoption of survival analysis for estimating individual price response functions, modeled by parametric and semi-parametric survival functions. Thus, the effects of variables such as the asking price are taken into account. The evaluation of data from a case study in the German used car market reveals a significant potential for an increase in profitability and confirms the proposed price-based revenue management concept.

Anbieter: Dodax
Stand: 27.01.2021
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Design, Modeling and Experiments of 3-DOF Elect...
133,32 € *
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A spherical actuator is a novel electric device that can achieve 2/3-DOF rotational motions in a single joint with electric power input. It has advantages such as compact structure, low mass/moment of inertia, fast response and non-singularities within the workspace. It has promising applications in robotics, automobile, manufacturing, medicine and aerospace industry. This is the first monograph that introduces the research on spherical actuators systematically. It broadens the scope of actuators from conventional single-axis to multi-axis, which will help both beginners and researchers to enhance their knowledge on electromagnetic actuators. Generic analytic modeling methods for magnetic field and torque output are developed, which can be applied to the development of other electromagnetic actuators. A parametric design methodology that allows fast analysis and design of spherical actuators for various applications is proposed. A novel non-contact high-precision 3-DOF spherical motion sensing methodology is developed and evaluated with experiments, which shows that it can achieve one order of magnitude higher precision than conventional methods. The technologies of nondimensionalization and normalization are introduced into magnetic field analysis the first time, and a benchmark database is established for the reference of other researches on spherical actuators.

Anbieter: Dodax
Stand: 27.01.2021
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Design, Modeling and Experiments of 3-DOF Elect...
145,61 € *
ggf. zzgl. Versand

A spherical actuator is a novel electric device that can achieve 2/3-DOF rotational motions in a single joint with electric power input. It has advantages such as compact structure, low mass/moment of inertia, fast response and non-singularities within the workspace. It has promising applications in robotics, automobile, manufacturing, medicine and aerospace industry. This is the first monograph that introduces the research on spherical actuators systematically. It broadens the scope of actuators from conventional single-axis to multi-axis, which will help both beginners and researchers to enhance their knowledge on electromagnetic actuators. Generic analytic modeling methods for magnetic field and torque output are developed, which can be applied to the development of other electromagnetic actuators. A parametric design methodology that allows fast analysis and design of spherical actuators for various applications is proposed. A novel non-contact high-precision 3-DOF spherical motion sensing methodology is developed and evaluated with experiments, which shows that it can achieve one order of magnitude higher precision than conventional methods. The technologies of nondimensionalization and normalization are introduced into magnetic field analysis the first time, and a benchmark database is established for the reference of other researches on spherical actuators.

Anbieter: Dodax
Stand: 27.01.2021
Zum Angebot