一、答题(本大题共5小题,每小题5分,共25分) 1.写出结构振动的自由度(不考虑结构的轴向变形)

6-1概述 一、结构的位移Displacement of Structures) 二、计算位移的目的

Recall the definition of stress: o stress =\intensity of internal force at a point\ Figure 3.1 Representation of cross-section of a general body

1、几何组成特性 2、静力特性 静定结构的内力计算依据静力平衡原理

Let's first review a bit... from Unified, saw that there are basic considerations in elasticity: 1. Equilibrium 2. Strain-Displacement 3. Stress- Strain Relations (Constitutive Relations)

There are many structural configurations where we do not have to deal with the full 3-D case. First let's consider the models Let's then see under what conditions we can apply them A. Plane Stress

Thus far we have discussed mechanical loading and the stresses and strains caused by that We noted, however, that the environment can have an effect on the behavior of materials and structures. Let's first consider:

Summarizing what we've looked at in elasticity, we have: 15 equations in 15 unknowns 3 equilibrium -6 strains -6 strain-displacement -3 displacements

西安建筑科技大学：《大学物理》课程教学资源（PPT课件）知识结构——量子力学知识结构

海南大学：《结构力学》课程授课教案（适用专业：土木工程）