Mechanical stress

This paper investigates the nonlinear vibration of saturated porous functionally graded plate subjected to the combination of mechanical and thermal loadings. Three different distributions of porosity are considered. Based on the Biot and higher order shear deformation theories, the vibration characteristics including natural frequency, deflection amplitude – time curves and relation between frequency ratio and amplitude of the saturated porous plate are determined.

13p viambani 18-06-2024 1 1   Download

Part 1 of ebook "Critical state soil mechanics" provides readers with contents including: Chapter 1 - Basic concepts; Chapter 2 - Stresses, strains, elasticity, and plasticity; Chapter 3 - Seepage; Chapter 4 - One-dimensional consolidation; Chapter 5 - Granta-gravel;...

102p giangdongdinh 28-05-2024 3 2   Download

Part 2 of ebook "Critical state soil mechanics" provides readers with contents including: Chapter 6 - Cam-clay and the critical state concept; Chapter 7 - Interpretation of data from axial tests on saturated clays; Chapter 8 - Coulomb’s failure equation and the choice of strength parameters; Chapter 9 - Two-dimensional fields of limiting stress; Chapter 10 - Conclusion;...

126p giangdongdinh 28-05-2024 3 2   Download

Part 1 of ebook "Engineering rock mechanics - Part 2: Illustrative worked examples" provides readers with contents including: Chapter 1 - Introduction; Chapter 2 - Geological setting; Chapter 3 - Stress; Chapter 4 - In situ rock stress; Chapter 5 - Strain and the theory of elasticity; Chapter 6 - Intact rock, deformability, strength and failure; Chapter 7 - Fractures and hemispherical projection; Chapter 8 - Rock masses, deformability, strength and failure; Chapter 9 - Permeability;...

233p giangdongdinh 28-05-2024 4 2   Download

Part 2 of ebook "Elastic solutions for soil and rock mechanics" provides readers with contents including: Chapter 9 - Stresses and displacements in a non-homogeneous elastic mass; Chapter 10 - Stresses and displacements in embankhents and slopes; Chapter 11 - Stresses and displacements around underground openings; Chapter 12 - Raft foundations; Chapter 13 - Axially loaded piles; Chapter 14 - Piles subjected to lateral load and moment; Chapter 15 - Miscellaneous problems;...

219p giangdongdinh 28-05-2024 1 1   Download

Part 1 of ebook "Introduction to contact mechanics (Second edition)" provides readers with contents including: Chapter 1 - Mechanical properties of materials; Chapter 2 - Linear elastic fracture mechanics; Chapter 3 - Delayed fracture in brittle solids; Chapter 4 - Statistics of brittle fracture; Chapter 5 - Elastic indentation stress fields;...

118p giangdongdinh 28-05-2024 2 2   Download

Part 2 of ebook "Introduction to contact mechanics (Second edition)" provides readers with contents including: Chapter 6 - Elastic contact; Chapter 7 - Hertzian fracture; Chapter 8 - Elastic-plastic indentation stress fields; Chapter 9 - Hardness; Chapter 10 - Elastic and elastic-plastic contact; Chapter 11 - Depth-sensing indentation testing; Chapter 12 - Indentation test methods;...

122p giangdongdinh 28-05-2024 2 2   Download

Part 2 of ebook "Introduction to the mechanics of deformable solids: Bars and beams" provides readers with contents including: Chapter 4 - Theory of cylindrical bars subjected to torsion; Chapter 5 - Theory of beams; Chapter 6 - Stress and failure analysis; Chapter 7 - Introduction to structural design; Appendix A - Mechanical properties of structural materials;...

134p giangdongdinh 28-05-2024 3 2   Download

Ebook "Materials selection and design" presents topics on the basics of materials selection and design which will give a better understanding on the selection methods and then find suitable materials for the applications. This book draws the simple and straightforward quantitative methods followed by knowledge-based expert system approach with real and tangible case studies to show how undergraduate or post-graduate students or engineers can apply their knowledge on materials selection and design.

127p giangdongdinh 28-05-2024 3 2   Download

Ebook "River dynamics and integrated river management" provides comprehensive information on rivers for integrated management, including natural processes, stresses resulting from human activities, and restoration of various parts of the river basin, including the watershed, mountain streams, alluvial rivers, estuaries, and natural and man-made lakes.

855p giangdongdinh 28-05-2024 5 1   Download

Part 1 book "Foundations of geometric continuum mechanics" includes content: Introduction, prelude - Finite dimensional systems, simplices in affine spaces and their boundaries, uniform fluxes in affine spaces, from uniform fluxes to exterior algebra, smooth analysis on manifolds - A short review, interlude - Smooth distributions of defects, smooth fluxes, frames, body points, and spacetime structure, stresses, smooth electromagnetism on manifolds.

196p dianmotminh01 14-05-2024 2 0   Download

Part 1 book "Foundations of geometric continuum mechanics" includes content: The elasticity problem; symmetry and dynamics, banachable spaces of sections of vector bundles over compact manifolds; manifolds of sections and embeddings; the general framework for global analytic stress theory; dual spaces corresponding to spaces of differentiable sections of a vector bundle - localization of sections and functionals; de rham currents; interlude - singular distributions of defects in bodies, vector valued currents; the representation of forces by stresses and hyperstresses,.... and other contents.

410p dianmotminh01 14-05-2024 3 0   Download

. In this study, an investigation was conducted to evaluate the expression of genes encoding SOS1, HKT1, HAK10, and NHX1 transporters in the leaf and root tissues of two contrasting rice cultivars, salt tolerant DP and salt sensitive IR28, under salt stress of 150 mM NaCl by RT-qPCR approach. RT-qPCR data revealed that the expression of HKT1, HAK10, SOS1, and NXH1 were upregulated at a higher level in the DP cultivar than in the IR28 cultivar in response to salt stress treatment.

9p dianmotminh02 03-05-2024 4 1   Download

Micro-sized luffa cylindrica fibers (MLCFs) are made from raw luffa natural fibers from Vietnam and are environmentally friendly while possessing good mechanical strength. This work focuses on the mechanical properties of composite based on epoxy epikote 828 reinforced with MLCFs, particularly the fracture toughness.

8p dianmotminh02 03-05-2024 4 2   Download

In this work, the free vibration analysis of Timoshenko microbeams made of the Functionally Graded Material (FGM) on the Winkler–Paternak elastic foundation based on the Modified Coupled Stress Theory (MCST) is investigated. Material characteristics of the beam vary throughout the thickness according to the power distribution and are estimated though Mori–Tanaka, Hashin–Shtrikman and Voigt homogenization techniques.

13p dianmotminh02 03-05-2024 7 2   Download

This study uses chitin as a filler for a polyurethane composite foam. The obtained polymer composite materials (PCM) are examined the technological parameters of the foaming (start time, rise time, and apparent density), the physical-mechanical properties (the compressive stress, compression set, resilience), and the cross-link density.

8p dianmotminh02 03-05-2024 4 2   Download

This paper presents a theoretical study that describes the fiber bridging mechanism under tensile stress using a closed-form analytical function. This proposed analytical model allows estimating the stress at a crack opening where the fiber orientation is represented by a Gaussian-like periodic distribution function.

14p viohoyo 25-04-2024 2 2   Download

Ebook "A clinical guide to the treatment of the human stress response (Third edition)" emphasizes the unique contribution of this longstanding text in the integration of mind/body relationships. The concept of stress, as defined and elaborated in Chapter 1, the primary efferent biological mechanisms of the human stress response, as described in Chapter 2, and the link from stress arousal to disease, as defined in Chapter 3, essentially remains the same. However, updates in microanatomy, biochemistry and tomography are added to these chapters.

489p tracanhphuonghoa1007 22-04-2024 4 2   Download

Supply chain management (SCM) has been stressed as a remedy to many of the underlying issues in the construction industry. The article is devoted to an actual topic in Russia related to the development and improvement of the budget mechanism for regional innovation policy. The article’s main scientific and practical problem is the inefficiency of the current innovation policy budget mechanism, based on centralized resource support of the territory innovative development and the weak role of the regions in the country innovation infrastructure formation.

6p longtimenosee09 08-04-2024 4 0   Download

There are many evidences showing the fact that some hard conditions from environment, namely abiotic stress, could make several significantly negative impacts on crop production. However, some plant species can overcome these bad situations by complicated mechanisms. This study has shown the result of the construction the recombinant vector carrying CodA gene which could encode an enzyme, named choline oxidase, and is controlled by Rd29A promoter.

8p vilarry 01-04-2024 5 1   Download