? 本书是教育科学“十五”国家规划课题研究成果,根据“高等学校工科本科工程力学基本要求”编写而成,涵盖了理论力学和材料力学的主要内容。 本书共18章,包括静力学基础、平面汇交力系、力矩与平面力偶系、平面一般力系、重心和形心、内力和内力图、拉伸和压缩、扭转、弯曲、应力状态分析和强度理论、压杆的稳定性、点的运动、刚体的基本运动、点的复合运动、刚体的平面运动、质点的运动微分方程、动力学普遍定理、动静法。本书在讲述某些概念和方法的同时,给出了相关的思考题,供课堂讨论之用。本书具有很强的教学适用性,有助于培养工程应用型人才。 本书可作为高等学校工科本科非机、非土类各专业少学时工程力学课程的教材,也可供高职高专与成人高校师生及有关工程技术人员参考。
?目 录 第1章 静力学基学 §1-1 静力学中的基本概念 §1-2 静力学公理 §1-3 约束和约束力 §1-4 研究对象和受力图 习题 第2章 平面学交力系 §2-1 平面汇交力系合成与平衡的几何法 §2-2 平面汇交力系合成与平衡的解析法 习题 第3章 力矩学平面力偶系 §3-1 关于力矩的概念及其计算 §3-2 关于力偶的概念 §3-3 平面力偶系的合成与平衡 习题 第4章 平面一般力系 §4-1 力线平移定理 §4-2 平面一般力系向一点简化 §4-3 分布荷载 §4-4 平面一般力系的平衡条件 §4-5 平面平行力系的平衡条件 §4-6 滑动摩擦 习题 第5章 重心和形心 §5-1 重心和形心的坐标公式 §5-2 确定重心和形心位置的具体方法 习题 第6章 内力和内力学 §6-1 平面桁架的内力 §6-2 轴力及轴力图 §6-3 扭矩和扭矩图 §6-4 剪力和弯矩·剪力图和弯矩图 习题 第7章 拉伸和学学 §7-1 横截面上的应力 §7-2 拉压杆的强度计算 §7-3 斜截面上的应力 §7-4 拉(压)杆的变形与位移 §7-5 拉(压)杆内的应变能 §7-6 低碳钢和铸铁受拉伸和压缩时的力学性能 §7-7 简单的拉、压超静定问题 §7-8 拉(压)杆接头的计算 习题 第8章 扭学 §8-1 薄壁圆筒扭转时的应力和变形 §8-2 圆杆扭转时的应力和变形 §8-3 强度条件及刚度条件 §8-4 等直圆杆在扭转时的应变能 §8-5 矩形截面杆的扭转 习题 第9章 学曲 §9-1 剪力图和弯矩图的进一步研究 §9-2 弯曲正应力 §9-3 求惯性矩的平行移轴公式 §9-4 弯曲切应力 §9-5 梁的强度条件 §9-6 挠度和转角 §9-7 弯曲应变能 §9-8 超静定梁 习题 第10章 学力学学分析和强度理学 §10-1 概述 §10-2 平面应力状态分析 §10-3 平面应力状态下的胡克定律 §10-4 三向应力状态 §10-5 强度理论及其应用 习题 第11章 学杆的学定性 §11-1 关于稳定性的概念 §11-2 细长中心压杆的临界荷载 §11-3 欧拉公式的适用范围·临界应力总图 §11-4 压杆的稳定条件和稳定性校核 习题 第12章 学的学学 §12-1 运动学的基本内容·参考系 §12-2 点的运动的矢量表示法 §12-3 点的运动的直角坐标表示法 §12-4 点的运动的自然表示法(弧坐标表示法) 习题 第13章 学学的基本学学 §13-1 刚体的移动 §13-2 刚体的定轴转动 §13-3 转动刚体上点的速度和加速度 习题 第14章 学的学合学学 §14-1 绝对运动、相对运动和牵连运动 §14-2 点的速度合成定理 §14-3 牵连运动为移动时点的加速度合成定理 习题 第15章 学学的平面学学 §15-1 刚体平面运动分解为移动和转动 §15-2 平面图形上点的速度·速度瞬心 §15-3 平面图形上点的加速度 习题 第16章 学学的学学微分方程 §16-1 动力学的基本定律 §16-2 质点的运动微分方程 习题 第17章 学力学普遍定理 §17-1 动量定理 §17-2 动量矩定理 §17-3 动能定理 §17-4 动力学普遍定理的综合应用 习题 第18章 学静法 §18-1 关于惯性力的概念 §18-2 质点的动静法 §18-3 质点系的动静法 §18-4 刚体惯性力系的简化 习题 附录Ⅰ 型钢表 附录Ⅱ 简单荷载作用下梁的挠度和转角 参考文献 习题答案 索引 Synopsis Contents 执笔者简介 Contents Chapter1 Basis of Statics1 §1-1 Basic Concepts in Statics1 §1-2 Axioms in Statics §1-3 Constraints and Constraining Forces §1-4 Object of Study and Free-body Diagram Exercises Chapter2 Planar Concurrent Force System §2-1 Resultant and Equilibrium Condition of Planar Concurrent Force Systems:Geometrical Method §2-2 Resultant and Equilibrium Condition of Planar Concurrent Force Systems:Analytical Method Exercises Chapter3 Moment and Plane Couples §3-1 Concept and Calculation of the Moment §3-2 Concept of the Couple §3-3 Resultant and Equilibrium Condition of Planar Couple System Exercises Chapter4 General Planar Force System §4-1 Theorem of Translation of the Force §4-2 Reduction of Planar Force System to a Given Co-planar Point §4-3 Distributed Load §4-4 Equilibrium Condition of the General Planar Force System §4-5 Equilibrium Condition of the Parallel Forces §4-6 Sliding Friction Exercises Chapter5 Centre of Gravity and Centroid of an Area §5-1 Formula for Coordinate of Centre of Gravity and Centroid of an Area §5-2 Method to Find Centre of Gravity and Centroid of an Area Exercises Chapter6 Internal Forces and Their Diagrams §6-1 Internal Forces in Members of Plane Trusses §6-2 Axial Force and Its Diagram §6-3 Twisting Moment and Its Diagram §6-4 Shear Force and Bending Moment·Their Diagrams Exercises Chapter7 Tension and Compression §7-1 Stress on Cross Section §7-2 Calculation about Strength of Axially Loaded Bars §7-3 Stresses on Inclined Sections §7-4 Deformation and Displacement of Axially Loaded Bars §7-5 Strain Energy in Axially Loaded Bars §7-6 Mechanical Behaviour of Structural Steel and Cast Iron under Tension and Compression §7-7 Simple Statically Indeterminate Problems of Axially Loaded Bars §7-8 Analysis of Connections in Axially Loaded Bars Exercises Chapter8 Torsion §8-1 Stresses and Deformation of Thin-walled Tube under Torsion §8-2 Stresses and Deformation of Circular Bar under Torsion §8-3 Strength Condition and Stiffness Condition §8-4 Strain Energy in Circular Bar with Constant Cross-section under Torsion §8-5 Torsion of Rectangular Bar Exercises Chapter9 Bending §9-1 Further Investigation in Shearing Force and Bending Moment Diagrams §9-2 Normal Stresses under Bending §9-3 Parallel Axis Theorem for Moment of Inertia §9-4 Shearing Stresses under Bending §9-5 Strength Conditions of Beam §9-6 Deflection and Slope §9-7 Strain Energy due to Bending §9-8 Statically Indeterminate Beam Exercises Chapter10 Analysis of Stress·Theory of Strength §10-1 Introduction §10-2 Analysis of Plane Stress §10-3 Hook's Law for Plane Stress §10-4 Triaxial Stress §10-5 Theories of Strength and Their Application Exercises Chapter11 Stability of Column §11-1 Concepts of Stability of Column §11-2 Critical Load for Long Column §11-3 Scope of Application for Euler's Formula·Critical Stress Diagram §11-4 Stability Condition and Verification of Stability for Columns Exercises Chapter12 Kinematics of a Particle §12-1 Elementary Content of Kinematics·Reference Coordinates §12-2 The Vector Method in Kinematics of a Particle §12-3 The Rectangular Coordinating Method in Kinematics of a Particle §12-4 The Natural Coordinating Method in Kinematics of a Particle Exercises Chapter13 Simple Motion of Rigid Bodies §13-1 Translation of a Rigid Body §13-2 Rotation of a Rigid Body about a Fixed-axis §13-3 Velocity and Acceleration of the Points of a Rotating Rigid Body Exercises Chapter14 Composite Motion of a Particle §14-1 Absolute Motion·Relative Motion·Convected Motion §14-2 Theorem of Composition of the Velocities of a Particle §14-3 Theorem of Composition of the Accelerations of a Particle during the Convected Motion is Translation Exercises Chapter15 Plane Motion of a Rigid Body §15-1 Decomposition of the Plane Motion of a Rigid Body §15-2 Velocity of the Points on a Plane Figure·Instantaneous Center of Velocity §15-3 Acceleration of the Points on a Plane Figure Exercises Chapter16 Differential Equations of Motion of a Particle §16-1 Fundamental Laws of Dynamics §16-2 Differential Equations of Motion of a Particle Exercises Chapter17 General Theorems of Dynamics §17-1 Theorem of Linear Momentum §17-2 Theorem of Angular Momentum §17-3 Theorem of Kinetic Energy §17-4 Integrated Application of General Theorems of Dynamics Exercises Chapter18 Kineto-Static Method §18-1 Concepts of Inertia Force §18-2 Kineto-Static Method for a Particle §18-3 Kineto-Static Method for a Particle System §18-4 Reduction of Inertia Force System of a Rigid Body Exercises AppendixⅠ Properties of Rolled-Steel Shapes AppendixⅡ Beam Deflection and Slope by Simple Load References Key to Exercises Index Synopses Contents A Brief Introduction to the Writer