The Linearized Theory of Elasticity

The book is ideal for a broad audience including graduate students, professionals and researchers in the field of solid mechanics. This new text/reference is an excellent resource designed to introduce students in mechanical or civil engineering to linearized theory of elasticity.

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Klappentext

The linearized theory of elasticity has long played an important role in engineering analysis. From the cast-iron and steel truss bridges of the eighteenth century to the international Space station, engineers have used the linearized theory of elasticity to help guide them in making design decisions effecting the strength, stiffness, weight, and cost of structures and components.

The Linearized Theory of Elasticity is a modern treatment of the linearized theory of elasticity, presented as a specialization of the general theory of continuum mechanics. It includes a comprehensive introduction to tensor analysis, a rigorous development of the governing field equations with an emphasis on recognizing the assumptions and approximations inherent in the linearized theory, specification of boundary conditions, and a survey of solution methods for important classes of problems. It covers two- and three-dimensional problems, torsion of noncircular cylinders, variational methods, and complex variable methods.

The mathematical framework behind the theory is developed in detail, with the assumptions behind the eventual linearization made clear, so that the reader will be adequately prepared for further studies in continuum mechanics, nonlinear elasticity, inelasticity, fracture mechanics, and/or finite elements. Prior to linearization, configurations and general (finite deformation) measures of strain and stress are discussed. A modern treatment of the theory of tensors and tensor calculus is used. General curvilinear coordinates are described in an appendix.

An extensive treatment of important solutions and solution methods, including the use of potentials, variational methods, and complex variable methods, follows the development of the linearized theory. Special topics include antiplane strain, plane strain/stress, torsion of noncircular cylinders, and energy minimization principles. Solutions for dislocations, inclusions, and crack-tip stress fields are discussed. Development of the skills and physical insight necessary for solving problems is emphasized. In presenting solutions to problems, attention is focused on the line of reasoning behind the solution.

Topics and Features:

• Can be used without prerequisite course in continuum mechanics

• Includes over one hundred problems

• Maintains a clear connection between linearized elasticity and the general theory of continuum mechanics

• Introduces theory in the broader context of continuum mechanics prior to linearization, providing a strong foundation for further studies

• Promotes the development of the skills and physical intuition necessary for deriving analytic solutions

• Provides readers with tools necessary to solve original problems through extensive coverage of solution methods

  The book is ideal for a broad audience including graduate students, professionals, and researchers in the field of solid mechanics. This new text/reference is an excellent resource designed to introduce students in mechanical or civil engineering to the linearized theory of elasticity.

  Inhalt
  1 Review of Mechanics of Materials.- 1.1 Forces and Stress.- 1.2 Stress and Strain.- 1.3 Torsion of Circular Cylinders.- 1.4 Bending of Prismatic Beams.- Problems.- 2 Mathematical Preliminaries.- 2.1 Scalars and Vectors.- 2.2 Indicial Notation.- 2.3 Tensors.- 2.4 Tensor Calculus.- 2.5 Cylindrical and Spherical Coordinates.- Problems.- 3 Kinematics.- 3.1 Configurations.- 3.2 Strain Tensors: Referential Formulation.- 3.3 Strain Tensors: Spatial Formulation.- 3.4 Kinematic Linearization.- 3.5 Cylindrical and Spherical Coordinates.- Problems.- 4 Forces and Stress.- 4.1 Stress Tensors: Referential Formulation.- 4.2 Stress Tensors: Spatial Formulation.- 4.3 Kinematic Linearization.- 4.4 Cylindrical and Spherical Coordinates.- Problems.- 5 Constitutive Equations.- 5.1 Elasticity.- 5.2 Constitutive Linearization.- 5.3 Material Symmetry.- 5.4 Isotropic Materials.- 5.5 Cylindrical and Spherical Coordinates.- Problems.- 6 Linearized Elasticity Problems.- 6.1 Field Equations.- 6.2 Boundary Conditions.- 6.3 Useful Consequences of Linearity.- 6.4 Solution Methods.- Problems.- 7 Two-Dimensional Problems.- 7.1 Antiplane Strain.- 7.2 Plane Strain.- 7.3 Plane Stress.- 7.4 Airy Stress Function.- Problems.- 8 Torsion of Noncircular Cylinders.- 8.1 Warping Function.- 8.2 Prandtl Stress Function.- Problems.- 9 Three-Dimensional Problems.- 9.1 Field Theory Results.- 9.2 Potentials in Elasticity.- 9.3 Dislocation Surface.- 9.4 Eshelby's Inclusion Problems.- Problems.- 10 Variational Methods.- 10.1 Calculus of Variations.- 10.2 Energy Theorems in Elasticity.- 10.3 Approximate Solutions.- Problems.- 11 Complex Variable Methods.- 11.1 Functions of a Complex Variable.- 11.2 Antiplane Strain.- 11.3 Plane Strain/Stress.- Problems.- Appendix: General Curvilinear Coordinates.- A.l General VectorBases.- A.1.1 Covariant and Contravariant Components.- A.1.2 Reciprocal Bases.- A.l.3 Higher-Order Tensors.- A.2 Curvilinear Coordinates.- A.2.1 Cartesian Coordinates.- A.2.2 Cylindrical Coordinates.- A.2.3 Spherical Coordinates.- A.2.4 Metric Tensor in a Natural Vector Basis.- A.2.5 Transformation Rule for Change of Coordinates.- A.3 Tensor Calculus.- A.3.l Gradient.- References.