Robust Multi Length Scale Deformation Process Design For The Control Of Microstructure Sensitive Material Properties PDF Download
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Total Pages | : 26 |
Release | : 2007 |
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Download Robust Multi-Length Scale Deformation Process Design for the Control of Microstructure-Sensitive Material Properties Book in PDF, ePub and Kindle
The objective of this work was to develop a robust design methodology for optimizing microstructure-sensitive properties in aircraft components manufactured using metal forming processes. The multi-scale forming design simulator developed provides means to select the sequence of deformation processes, design the dies and preforms for each process stage as well as the process conditions such that a product is obtained with desired shape and microstructure. Modeling of uncertainty propagation in such multi-scale models of deformation is extremely complex considering the nonlinear coupled phenomena that need to be accounted for. The work addresses key mathematical and computational issues related to robust multi-scale design of deformation processes. Our research accomplishments include development of new mathematical models based on spectral polynomial chaos, support space, and entropy maximization techniques for modeling sources of uncertainties in material deformation processes. These models, in conjunction with multi-scale homogenization models, allow simulations of the effect of microstructural variability on the reliability of macro-scale systems. We have developed the first stochastic variational multi-scale simulator with an explicit sub-grid model, a robust deformation process simulator using spectral and collocation methods for simulating uncertainties in metal forming processes. Finally, recent developments including an information theoretic framework for modeling microstructural uncertainties is summarized.
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Total Pages | : 7 |
Release | : 2004 |
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Download Advanced Computational Techniques for Materials-by-Design Book in PDF, ePub and Kindle
The objective of this work is to address a number of mathematical and computational issues critical to the development of a robust multi-length scale and multi-stage deformation process design simulator for the control of microstructure-sensitive properties in aircraft manufacturing applications. As part of the research effort, multiple technical developments are being accomplished. An efficient framework for accurately assessing the effect of uncertainty in process and material parameters, in initial conditions and in the microstructure has been developed. A spectral polynomial chaos framework as well as a novel support space method have been developed for analyzing uncertainty in metal forming problems. On the meso-scale, robust statistical learning techniques as well as gradient based methods have been formulated for process sequence selection and design of highly optimized synthetic microstructures. Maximum entropy concepts have been used to develop an algorithm for efficient reconstruction of microstructure classes using a limited number of microstructure realizations. It is strongly believed that these advanced techniques can drastically improve process and material predictions in critical components.
Author | : Shankar Ganapathysubramanian |
Publisher | : |
Total Pages | : 366 |
Release | : 2004 |
Genre | : |
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Download Computational Design of Deformation Processes for the Control of Microstructure-sensitive Properties Book in PDF, ePub and Kindle
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Total Pages | : 902 |
Release | : 2008 |
Genre | : Dissertations, Academic |
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Download Dissertation Abstracts International Book in PDF, ePub and Kindle
Author | : H. J. Frost |
Publisher | : Pergamon |
Total Pages | : 184 |
Release | : 1982 |
Genre | : Science |
ISBN | : |
Download Deformation-mechanism Maps Book in PDF, ePub and Kindle
Author | : George E. Dieter |
Publisher | : ASM International |
Total Pages | : 410 |
Release | : 2003-01-01 |
Genre | : Metals |
ISBN | : 1615032282 |
Download Handbook of Workability and Process Design Book in PDF, ePub and Kindle
Author | : Xiaolei Wu |
Publisher | : CRC Press |
Total Pages | : 796 |
Release | : 2021-11-24 |
Genre | : Technology & Engineering |
ISBN | : 100035332X |
Download Heterostructured Materials Book in PDF, ePub and Kindle
Heterostructured (HS) materials represent an emerging class of materials that are expected to become a major research field for the communities of materials, mechanics, and physics in the next couple of decades. One of the biggest advantages of HS materials is that they can be produced by large-scale industrial facilities and technologies and therefore can be commercialized without the scaling up and high-cost barriers that are often encountered by other advanced materials. This book collects recent papers on the progress in the field of HS materials, especially their fundamental physics. The papers are arranged in a sequence of chapters that will help new researchers entering the field to have a quick and comprehensive understanding of HS materials, including the fundamentals and recent progress in their processing, characterization, and properties.
Author | : Paul-Louis George |
Publisher | : Hermes Science Publications |
Total Pages | : 413 |
Release | : 1998 |
Genre | : Technology & Engineering |
ISBN | : 9782866016920 |
Download Delaunay Triangulation and Meshing Book in PDF, ePub and Kindle
The authors describe meshing techniques based on Delauney triangulation, which is used in construction projects. They also discuss classical mesh generation techniques and more advanced topics such as isotop, planar, curve surface and volumetric testing. The theoretical discussion is complemented by examples of practical applications.
Author | : Sidney Yip |
Publisher | : Springer Science & Business Media |
Total Pages | : 396 |
Release | : 2010-04-07 |
Genre | : Science |
ISBN | : 1402097417 |
Download Scientific Modeling and Simulations Book in PDF, ePub and Kindle
Although computational modeling and simulation of material deformation was initiated with the study of structurally simple materials and inert environments, there is an increasing demand for predictive simulation of more realistic material structure and physical conditions. In particular, it is recognized that applied mechanical force can plausibly alter chemical reactions inside materials or at material interfaces, though the fundamental reasons for this chemomechanical coupling are studied in a material-speci c manner. Atomistic-level s- ulations can provide insight into the unit processes that facilitate kinetic reactions within complex materials, but the typical nanosecond timescales of such simulations are in contrast to the second-scale to hour-scale timescales of experimentally accessible or technologically relevant timescales. Further, in complex materials these key unit processes are “rare events” due to the high energy barriers associated with those processes. Examples of such rare events include unbinding between two proteins that tether biological cells to extracellular materials [1], unfolding of complex polymers, stiffness and bond breaking in amorphous glass bers and gels [2], and diffusive hops of point defects within crystalline alloys [3].
Author | : T. W. Clyne |
Publisher | : Cambridge University Press |
Total Pages | : 297 |
Release | : 2021-06-10 |
Genre | : Science |
ISBN | : 1108837891 |
Download Testing of the Plastic Deformation of Metals Book in PDF, ePub and Kindle
Discover a novel approach to the subject, providing detailed information about established and innovative mechanical testing procedures.