§9-1 压杆稳定的概念 (The basic concepts of columns) §9-3 其它支座条件下细长压杆的临界压力 (Euler’s Formula for other end conditions ) §9-2 两端铰支细长压杆的临界压力 (The Critical Load for a straight, uniform, axially loaded, pin-ended columns) §9-4 欧拉公式的应用范围•经验公式 (Applicable range for Euler’s formula • the experimental formula ) §9-5 压杆的稳定校核 (Check the stability of columns) §9-6 提高压杆稳定性的措施 (The measures to enhance the columns stability)

§10-1 概述 (Instruction) §10-2 动静法的应用 (The application for method of dynamic equilibrium) §10-3 构件受冲击时的应力和变形（Stress and deformation by impact loading)

§4-1 基本概念及工程实例 (Basic concepts and example problems) 第四章 弯曲内力 (Internal forces in beams) §4-3剪力方程和弯矩方程·剪力图和弯矩图 (Shear-force& bending-moment equations ; shear-force & bending- moment diagrams) §4-2 梁的剪力和弯矩(Shear- force and bending- moment in beams) §4-6 平面刚架和曲杆的内力图 (Internal diagrams for frame members & curved bars) §4-5 叠加原理作弯矩图 (Drawing bending-moment diagram by superposition method) §4-4 剪力、弯矩与分布荷载集度间 的关系(Relationships between load,shear force,and bending moment)

§1-1 截面的静矩和形心(The first moments of the area & centroid of an area) §1-4 转轴公式 (Rotation of axes) §1-2 极惯性矩 惯性矩 惯性积 (Polar moment of inertia Moment of inertia Product of inertia) §1-3平行移轴公式 (Parallel-Axis theorem)

§13-1 概述（Introduction) §13-2 杆件变形能的计算( Calculation of strain energy for various types of loading ) §13-3 互等定理（Reciprocal theorems) §13-4 单位荷载法 • 莫尔定理(Unit-load method & mohr’s theorem) §13-5 卡氏定理(Castigliano’s Theorem) §13-6 计算莫尔积分的图乘法 (The meth￾od of moment areas for mohr’s integration)

8-1组合变形和叠加原理 (Combined deformation and superposition method) 8-2拉伸(压缩)与弯曲的组合 ( Combined axial and flexural loads) 8-3偏心拉(压)截面核心(Eccentric loads &the kern (or core) of a section) 8-4扭转与弯曲的组合 ( Combined torque and flexural loads)

9-1 压杆稳定的概念 (The basic concepts of columns) 9-3 其它支座条件下细长压杆的临界压力 (Euler’s Formula for other end conditions ) 9-2 两端铰支细长压杆的临界压力 (The Critical Load for a straight, uniform, axially loaded, pin-ended columns)

典型题精解(4-1) 41图4-1(a)所示一单元处于平面应力状态。试求:1)主应力及主 平面;2)最大切应力及其作用平面

第一章拉伸与压缩 内容提要 第一节轴向拉伸和压缩的概念 第二节内力截面法轴力及轴力图 第三节轴向拉(压)杆横截面上的应力 第四节拉(压)杆的变形胡克定律 第五节强度条件安全系数许用应力

第一节 弯曲的概念 第二节 剪力图和弯矩图 第三节 弯矩、剪力与分布荷载集度间的关系 第四节 弯曲应力 第五节 梁的应力强度条件