河海大学：《弹性力学及有限元》课程PPT教学课件（双语版）第一章 绪论 Elasticity and Finite Element Method（主讲：徐汉忠）

弹性力学及有限元 Elasticity and Finite Element Method The lectures will be given both in English and Chinese 采用中英文双语讲授 弹性力学第一章

弹性力学第一章 1 弹性力学及有限元 Elasticity and Finite Element Method The lectures will be given both in English and Chinese 采用中英文双语讲授

Give me a fish and I will eat today, Teach me to fish and i will eat for a life time。 授人以鱼,不如授人以渔。 弹性力学第一章 2

弹性力学第一章 2 Give me a fish and I will eat today, Teach me to fish and I will eat for a life time. 授人以鱼，不如授人以渔

Textbook Applied elasticity 徐芝纶 中文教材: 弹性力学简明教程 徐芝纶 弹性力学第一章

弹性力学第一章 3 Textbook: Applied Elasticity 徐芝纶 中文教材： 弹性力学简明教程 徐芝纶

Chapter 1. Introduction 第一章绪论 弹性力学第一章

弹性力学第一章 4 Chapter 1. Introduction 第一章 绪论

1.1 Contents of Theory of Elasticity 1.1弹性力学的内容 NAME Theory of elasticity is often called elasticity for short. t is the branch of solid mechanIcs。 弹性力学的理论简称为弹性理论或弹性力学 它是固体力学的一个分枝 弹性力学第一章

弹性力学第一章 5 1.1 Contents of Theory of Elasticity 1.1 弹性力学的内容 • NAME Theory of elasticity is often called elasticity for short. It is the branch of solid mechanics. 弹性力学的理论简称为弹性理论或弹性力学. 它是固体力学的一个分枝

Three branches of solid mechanics 固体力学的三个分枝 Mechanics of materials材料力学, Structural mechanics结构力学 Elasticity 弹性力学 弹性力学第一章

弹性力学第一章 6 Three branches of solid mechanics 固体力学的三个分枝 • Mechanics of materials 材料力学, Structural Mechanics 结构力学 Elasticity 弹性力学

What does the elasticity deal with? It deals with the stresses. deformations and displacements in elastic solids produced by external forces or changes in temperature 研究弹性体由于外力和温度改变而引起的应力, 形变和位移。 It analyzes the stresses, deformations and displacements of structural elements within the elastic range and thereby to check the sufficiency of their strength. stiffness and sta bility 分析结构的应力,形变和位移,检查是否满足强 度,刚度和稳定性条件。 弹性力学第一章

弹性力学第一章 7 • What does the Elasticity deal with? It deals with the stresses, deformations and displacements in elastic solids produced by external forces or changes in temperature. 研究弹性体由于外力和温度改变而引起的应力， 形变和位移。 • It analyzes the stresses, deformations and displacements of structural elements within the elastic range and thereby to check the sufficiency of their strength, stiffness and stability. 分析结构的应力，形变和位移，检查是否满足强 度，刚度和稳定性条件

Comparison among the three courses in solid mechanics 固体力学三门学科的比较 Three branches have the same purpose and do differ from one another both in objects studied and the methods of analysis used 1. Objects studied研究对象 2. Methods of analysis研究方法 弹性力学第一章

弹性力学第一章 8 Comparison among the three courses in solid mechanics 固体力学三门学科的比较 • Three branches have the same purpose and do differ from one another both in objects studied and the methods of analysis used. • 1. Objects studied 研究对象 2. Methods of analysis 研究方法

1. objects studied:-研究对象: Similarity---相同点 to deal with the elastic solids 都是研究弹性体 弹性力学第一章

弹性力学第一章 9 to deal with the elastic solids 都是研究弹性体 1. objects studied:--研究对象: (1) Similarity---------相同点

(2) objects studied- difference研究对象-不同点 Mechanics of materials bar element 材料力学 单根杆件 Structural bar systems: Mechanics truss, rig gid frame 结构力学 杆件系统:桁架,刚架。 Elasticity:. plates and shells板,壳 弹性力学2. blocks:块体 dams foundations坝,基础 3. analyze bar element precisely 对杆件作精确分析 弹性力学第一章

弹性力学第一章 10 (2)objects studied--difference研究对象--不同点 Mechanics of materials : bar element 材料力学 单根杆件 Structural bar systems:-- Mechanics : truss, rigid frame 结构力学 杆件系统： 桁架，刚架。 Elasticity: 1. plates and shells 板，壳 弹性力学 2.blocks: 块体 e.g. dams,foundations 坝，基础 3.analyze bar element precisely 对杆件作精确分析