Mecanica de Materiales Johnston Beer 5ta Edicion: A Comprehensive Review and Analysis
Mecanica de Materiales Johnston Beer 5ta Edicion is a textbook that covers the fundamentals of mechanics of materials, also known as strength of materials or solid mechanics. It is written by Ferdinand P. Beer, E. Russell Johnston Jr., John T. DeWolf and David F. Mazurek, and published by McGraw-Hill.
This textbook is intended for undergraduate students of engineering who want to learn how to analyze the internal forces and deformations of structures subjected to various types of loads, such as axial, torsional, bending, shear and combined loads. The textbook also covers topics such as stress and strain, elastic and plastic behavior, failure criteria, beam deflections, buckling of columns, energy methods and statically indeterminate structures.
The fifth edition of this textbook has been updated and revised to reflect the latest developments and applications in the field of mechanics of materials. Some of the features of this edition are:
- A clear and concise presentation of the theory and applications of mechanics of materials.
- Numerous examples and problems that illustrate the concepts and principles of mechanics of materials.
- An emphasis on problem-solving skills and critical thinking.
- A variety of pedagogical tools that help students learn and review the material, such as summaries, key concepts, review questions, design problems and computer problems.
- An online learning center that provides additional resources for students and instructors, such as animations, videos, solutions manual, PowerPoint slides and quizzes.
Mecanica de Materiales Johnston Beer 5ta Edicion is a comprehensive and authoritative textbook that covers the essential topics of mechanics of materials in a rigorous and accessible manner. It is suitable for students who want to master the fundamentals of mechanics of materials and apply them to real-world engineering problems.
Chapter 1: Introduction – Concept of Stress
The first chapter of Mecanica de Materiales Johnston Beer 5ta Edicion introduces the concept of stress, which is the internal force per unit area that acts on a material when it is subjected to an external load. The chapter explains how to calculate the normal and shear stresses on a cross section of a member, and how to represent them using a stress element. The chapter also discusses the concepts of equilibrium, free-body diagrams, average and actual stresses, and allowable stress.
Chapter 2: Stress and Strain – Axial Loading
The second chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of stress and strain due to axial loading, which is the load that acts along the axis of a member. The chapter defines the concept of strain, which is the deformation per unit length of a material when it is subjected to an external load. The chapter also explains the relationship between stress and strain, known as Hooke’s law, and the modulus of elasticity, which is a measure of the stiffness of a material. The chapter also covers topics such as thermal effects, statically indeterminate problems, and stress concentrations.
Chapter 3: Torsion
The third chapter of Mecanica de Materiales Johnston Beer 5ta Edicion deals with the topic of torsion, which is the load that causes a twisting or rotation of a member. The chapter derives the formulas for the shear stress and angle of twist in a circular shaft subjected to torsion, and applies them to various problems involving solid and hollow shafts, power transmission, statically indeterminate problems, and stress concentrations. The chapter also introduces the concept of shear modulus, which is a measure of the rigidity of a material.
Chapter 4: Pure Bending
The fourth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of pure bending, which is the load that causes a bending or curvature of a member. The chapter derives the formulas for the normal stress and curvature in a beam subjected to pure bending, and applies them to various problems involving symmetric and asymmetric cross sections, composite beams, and built-up beams. The chapter also introduces the concept of moment of inertia, which is a measure of the resistance of a cross section to bending.
Chapter 5: Analysis and Design of Beams for Bending
The fifth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of analysis and design of beams for bending, which is the load that causes a combination of bending and shear in a member. The chapter explains how to calculate the shear force and bending moment diagrams for a beam subjected to various types of loads and supports, and how to use them to determine the maximum normal and shear stresses in the beam. The chapter also discusses topics such as flexural rigidity, elastic curve, beam deflections, and design criteria.
Chapter 6: Shearing Stresses in Beams and Thin-Walled Members
The sixth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of shearing stresses in beams and thin-walled members, which are members that have one dimension much smaller than the other two. The chapter derives the formulas for the shear stress distribution in a beam with a rectangular or circular cross section, and applies them to various problems involving beams with different cross sections, thin-walled tubes, and thin-walled open sections. The chapter also introduces the concept of shear flow, which is the product of shear stress and thickness.
Chapter 7: Transformations of Stress and Strain
The seventh chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of transformations of stress and strain, which are methods to determine the state of stress and strain at a point in a material when it is subjected to complex loading conditions. The chapter explains how to use the Mohr’s circle and the equations of transformation to find the normal and shear stresses and strains on any plane passing through a point, and how to find the principal stresses and strains and the maximum shear stresses and strains at a point. The chapter also discusses topics such as stress and strain in three dimensions, octahedral stresses and strains, and strain rosettes.
Chapter 8: Principal Stresses Under a Given Loading
The eighth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of principal stresses under a given loading, which are the maximum normal stresses that occur at a point in a material when it is subjected to complex loading conditions. The chapter explains how to use the equations of equilibrium and compatibility to find the principal stresses in various problems involving axial loading, torsion, bending, combined loading, pressure vessels, and thick-walled cylinders. The chapter also introduces the concept of stress trajectories, which are curves that show the direction of the principal stresses at every point in a material.
Chapter 9: Deflection of Beams
The ninth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of deflection of beams, which is the displacement or deformation of a beam when it is subjected to bending loads. The chapter explains how to use the methods of integration, superposition, moment-area, and singularity functions to find the deflection and slope of a beam subjected to various types of loads and supports. The chapter also discusses topics such as elastic curve, statically indeterminate beams, beam-columns, and influence lines.
Chapter 10: Columns
The tenth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of columns, which are slender members that are subjected to axial compressive loads. The chapter explains how to use the Euler’s formula and the Johnson’s formula to find the critical load and the buckling stress of a column with various end conditions. The chapter also discusses topics such as effective length, eccentric loading, inelastic buckling, and design of columns.
Chapter 11: Energy Methods
The eleventh chapter of Mecanica de Materiales Johnston Beer 5ta Edicion covers the topic of energy methods, which are alternative methods to find the deflections and stresses in structures using the concepts of work and energy. The chapter explains how to use the principle of work and energy, the principle of virtual work, the method of Castigliano’s theorem, and the method of strain energy to solve various problems involving beams, trusses, frames, and shafts. The chapter also discusses topics such as impact loading, Maxwell’s reciprocal theorem, and unit load method.
Chapter 12: Review and Summary
The twelfth chapter of Mecanica de Materiales Johnston Beer 5ta Edicion provides a review and summary of the main topics and concepts covered in the previous chapters. The chapter also provides a list of key terms, a list of key equations, a list of key concepts, and a list of review questions for each chapter. The chapter also provides some suggestions for further reading and study.
Conclusion
Mecanica de Materiales Johnston Beer 5ta Edicion is a comprehensive and authoritative textbook that covers the essential topics of mechanics of materials in a rigorous and accessible manner. It is suitable for students who want to master the fundamentals of mechanics of materials and apply them to real-world engineering problems. The textbook provides a clear and concise presentation of the theory and applications of mechanics of materials, numerous examples and problems that illustrate the concepts and principles of mechanics of materials, an emphasis on problem-solving skills and critical thinking, a variety of pedagogical tools that help students learn and review the material, and an online learning center that provides additional resources for students and instructors. Mecanica de Materiales Johnston Beer 5ta Edicion is a textbook that will help students develop a solid understanding of mechanics of materials and prepare them for further studies and careers in engineering.
Conclusion
Mecanica de Materiales Johnston Beer 5ta Edicion is a comprehensive and authoritative textbook that covers the essential topics of mechanics of materials in a rigorous and accessible manner. It is suitable for students who want to master the fundamentals of mechanics of materials and apply them to real-world engineering problems. The textbook provides a clear and concise presentation of the theory and applications of mechanics of materials, numerous examples and problems that illustrate the concepts and principles of mechanics of materials, an emphasis on problem-solving skills and critical thinking, a variety of pedagogical tools that help students learn and review the material, and an online learning center that provides additional resources for students and instructors. Mecanica de Materiales Johnston Beer 5ta Edicion is a textbook that will help students develop a solid understanding of mechanics of materials and prepare them for further studies and careers in engineering.
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