[材料力学总复习.ppt

材料力学总复习 下图所示结构中，1杆面积为A，材料杨氏模量为 E，AB为刚性杆。已知：结构承受荷载及几何尺 寸如图所示。求：1. B点竖向位移；2. C点竖向 位移；3. BA杆绕A点转角。 例3 下图所示结构，杆CF、ED面积均为A，且材料杨氏 模量为E，作用在刚性杆AB上的均布荷载集度为q。 求：杆1、2的应力。 例4 例5 例6 例7 例8 例9 例10 例11 对于圆形截面， 对于有棱角的矩形截面 斜弯曲 拉伸（压缩）与弯曲的组合 D Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 弯扭组合变形 P271~275 第八章 7 8 13 17 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 基本内容 强度 刚度 稳定性 轴向拉压 剪切 扭转 弯曲 组合变形 斜弯曲 拉（压）弯组合 偏心拉（压） 弯扭组合 应力状态 强度理论 基本变形 扭转 弯曲 压杆稳定 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 轴向拉压 受力、变形 特点 内力 应力 强度条件 变形 刚度条件 剪 切 扭转 弯曲 FN Fs T M Fs Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 知识点 绪论 内力（截面法求解）； 应力 正应力 切应力 应变 线应变 切应变 轴向拉压 1、强度校核 2、截面设计 3、确定许可载荷 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 如图所示，等截面直杆AD受如图所示轴向荷载作用，已知横截面面积A=400mm2，Ⅱ-Ⅱ截面倾角为45度。求：1. 作杆件AD的轴力图；2. 计算Ⅰ-Ⅰ截面正应力及切应力；3. 计算Ⅱ-Ⅱ截面正应力及切应力。 例1 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 条件 D 确定结构的许可载荷 和 节点 位移 例 2.5 第二章习题 11, 12, 15 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 例2 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 拉、压杆静不定问题 变形协调关系 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slide