Numerical and Experimental Study of Metal Powder Compaction PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages : 24
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Book Description
Author: Hossein Kashani Zadeh
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
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Book Description
In metal powder compaction, density non-uniformity due to friction can be a source of flaws. Currently in industry, uniform density distribution is achieved by the optimization of punch motions through trial and error. This method is both costly and time consuming. Over the last decade, the finite element (FE) method has received significant attention as an alternative to the trial and error method; however, there is still lack of an accurate and robust material model for the simulation of metal powder compaction. In this study, Cam-clay and Drucker-Prager cap (DPC) material models were implemented into the commercial FE software ABAQUS/Explicit using the user-subroutine VUMAT. The Cam-clay model was shown to be appropriate for simple geometries. The DPC model is a pressure-dependent, non-smooth, multi-yield surface material model with a high curvature in the cap yield surface. This high curvature tends to result in instability issues; a sub-increment technique was implemented to address this instability problem. The DPC model also shows instability problems at the intersection of the yield surfaces; this problem was solved using the corner region in DPC material models for soils. The computational efficiency of the DPC material model was improved using a novel technique to solve the constitutive equations. In a case study it was shown that the numerical technique leads to a 30% decrease in computational cost, while degrading the accuracy of the analysis by only 0.4%. The forward Euler method was shown to be accurate in the integration of the constitutive equations using an error control scheme. Experimental tests were conducted where cylindrical-shaped parts were compacted from Distaloy AE iron based powder to a final density of 7.0 g/cm3. To measure local density, metallography and image processing was used. The FE results were compared to experimental results and it was shown that the FE analysis predicted local relative density within 2% of the actual experimental density.
Author: Peter R. Brewin
Publisher: Springer Science & Business Media
ISBN: 1846280990
Category : Technology & Engineering
Languages : en
Pages : 341
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Book Description
Manufacture of components from powders frequently requires a compaction step. Modelling of Powder Die Compaction presents a number of case studies that have been developed to test compaction models. It will be bought by researchers involved in developing models of powder compaction as well as by those working in industry, either using powder compaction to make products or using products made by powder compaction.
Author: Georges Victor Abou-Chedid
Publisher:
ISBN:
Category :
Languages : en
Pages : 294
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Author: Wolfgang Bier
Publisher: kassel university press GmbH
ISBN: 3899583965
Category :
Languages : en
Pages : 166
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 816
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Book Description
Author: Berend Denkena
Publisher: Academic Press
ISBN: 0128126000
Category : Technology & Engineering
Languages : en
Pages : 494
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Book Description
Cyber-Physical and Gentelligent Systems in Manufacturing and Life Cycle explores the latest technologies resulting from the integration of sensing components throughout the production supply chain, and the resulting possibilities to improve efficiency, flexibility, and product quality. The authors present cutting edge research into data storage in components, communication devices, data acquisition, as well as new industrial applications. Detailed technical descriptions of the tools are presented in addition to discussions of how these systems have been used, the benefits they provide, and what industry problems they could tackle in the future. This is essential reading for researchers and production engineers interested in the potential of cyber physical systems to optimize all parts of the supply chain. Addresses applications of cyber physical systems throughout the product lifecycle, including design, manufacture, and maintenance Features five industry case studies examining tools in different stages of the production chain Provides an invaluable recap of 12 years of advances in digitization of production processes and the implementation of intelligent systems Explores how these technologies could be used to solve problems in the future
Author: Michael Hehenberger
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
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Book Description
Author: Archana Sharma
Publisher: Springer Nature
ISBN: 9819703379
Category :
Languages : en
Pages : 421
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Book Description
Author: Juan A. Gallego-Juarez
Publisher: Elsevier
ISBN: 1782420363
Category : Technology & Engineering
Languages : en
Pages : 1167
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Book Description
The industrial interest in ultrasonic processing has revived during recent years because ultrasonic technology may represent a flexible “green alternative for more energy efficient processes. A challenge in the application of high-intensity ultrasound to industrial processing is the design and development of specific power ultrasonic systems for large scale operation. In the area of ultrasonic processing in fluid and multiphase media the development of a new family of power generators with extensive radiating surfaces has significantly contributed to the implementation at industrial scale of several applications in sectors such as the food industry, environment, and manufacturing. Part one covers fundamentals of nonlinear propagation of ultrasonic waves in fluids and solids. It also discusses the materials and designs of power ultrasonic transducers and devices. Part two looks at applications of high power ultrasound in materials engineering and mechanical engineering, food processing technology, environmental monitoring and remediation and industrial and chemical processing (including pharmaceuticals), medicine and biotechnology. Covers the fundamentals of nonlinear propagation of ultrasonic waves in fluids and solids. Discusses the materials and designs of power ultrasonic transducers and devices. Considers state-of-the-art power sonic applications across a wide range of industries.
