Mathematical Modelling and Numerical Analysis of Size-Dependent Structural Members in Temperature Fields

Mathematical Modelling and Numerical Analysis of Size-Dependent Structural Members in Temperature Fields PDF

Author: Jan Awrejcewicz

Publisher: Springer Nature

Published: 2020-10-08

Total Pages: 419

ISBN-13: 3030559939

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This book is devoted to researchers and teachers, as well as graduate students, undergraduates and bachelors in engineering mechanics, nano-mechanics, nanomaterials, nanostructures and applied mathematics. It presents a collection of the latest developments in the field of nonlinear (chaotic) dynamics of mass distributed-parameter nanomechanical structures, providing a rigorous and comprehensive study of modeling nonlinear phenomena. It is written in a unique pedagogical style particularly suitable for independent study and self-education. In addition, the book achieves a good balance between Western and Eastern extensive studies of the mathematical problems of nonlinear vibrations of structural members.

The Costs of Climate Change Mitigation Innovations

The Costs of Climate Change Mitigation Innovations PDF

Author: David S-K. Ting

Publisher: CRC Press

Published: 2024-04-18

Total Pages: 241

ISBN-13: 1040004768

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The notion that humanity may be too late to alter climate change could potentially lead to fear and therefore the advocacy of implementing radical strategies and/or hastening the execution of certain measures to the extreme. There is evidence that extensive and intensive implementation of some climate change solutions can significantly alter the environment and ecosystems in unintended ways. For example, the microclimate of a field in the proximity and downstream of a closely packed array of wind turbines can be noticeably altered by the modified lower atmospheric fluxes caused by the turbines, which can then negatively affect crop yields. Additionally, some studies have found that large-scale solar fields can result in the modulation of atmospheric circulation, leading to changes in regional precipitation. The Costs of Climate Change Mitigation Innovations: A Pragmatic Outlook provides a forum for discussion on the long-term consequences of various climate strategies. It promotes our striving toward minimizing the potential negative impact of new interventions by performing objective, holistic analyses. The bottom line is that we do not want today's solutions to become tomorrow’s problems.

Residual Stresses in Friction Stir Welding

Residual Stresses in Friction Stir Welding PDF

Author: Nilesh Kulkarni

Publisher: Butterworth-Heinemann

Published: 2013-11-20

Total Pages: 59

ISBN-13: 012800732X

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This book describes the fundamentals of residual stresses in friction stir welding and reviews the data reported for various materials. Residual stresses produced during manufacturing processes lead to distortion of structures. It is critical to understand and mitigate residual stresses. From the onset of friction stir welding, claims have been made about the lower magnitude of residual stresses. The lower residual stresses are partly due to lower peak temperature and shorter time at temperature during friction stir welding. A review of residual stresses that result from the friction stir process and strategies to mitigate it have been presented. Friction stir welding can be combined with additional in-situ and ex-situ manufacturing steps to lower the final residual stresses. Modeling of residual stresses highlights the relationship between clamping constraint and development of distortion. For many applications, management of residual stresses can be critical for qualification of component/structure. Reviews magnitude of residual stresses in various metals and alloys Discusses mitigation strategies for residual stresses during friction stir welding Covers fundamental origin of residual stresses and distortion

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