台湾清华大学材料学教材(全英文).doc

台湾清华大学材料学教材(全英文).docChapter 1 Tension, Compression, and Shear
Introduction
Mechanics of Materials : to understand the behavior of solid bodies subjected to various types of loading
This course have several names : "Strength of Materials", "Mechanics of Deformable Bodies"
Two main aspects:
stress analysis : analysis of bodies under the action of external force, to determine the internal stress and their deformation
mechanical properties of materials : consideration of such things as material strength, stability, fatigue and brittle fracture etc.
The principal objective of this analysis is to determine the stresses, strains, and displacements in structures and their components due to loads acting on them, we use the physical properties of the materials as well as numerous theoretical laws and concepts to analysis
Theoretical analysis and experimental results have equally important roles in this study
In the analyses, we will make logical derivations to obtain formulas and equations for predicting mechanical behavior, but we must recognize
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that this formula cannot be used in a realistic way unless certain properties of the materials are known, also, many practical problems of great important in engineering cannot be handled efficiently by theoretical means, experimental measurements becomes a necessity. In the study of this course, you will find that your efforts are divided naturally into two parts
understanding the logical development of the concepts
applying those concepts to practical situations
Finally, sometime use the symbolic solution, it provides the opportunity to check the dimensions at any stage of the work, and the most important reason is to obtain a general formula that can be programmed on a computer
Both systems of unit are used
International System of Units (SI unit) : basic units are kg, sec, m
. Customary System (USCS) : basic units are lb, sec, ft Relative Courses:
Statics (Dynamics) —> Mechanics of Materials —> Advanced Mechanics of Materials