《材料力学》课程PPT教学课件（双语版）第十章 压杆稳定

Mechanics of materials CHAPTERIO STABILITYOF COMPRESSEDCOLUMNS

1 Mechanics of Materials

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CHAPTER 10 STABILIZATION OF COMPRESSIVE COLUMNS >310-1 CONCEPTS OF STABILITY OF COMPRESSED COLUMNS Ds10-2 EULER'S FORMULA OF THE CRITICAL FORCE OF SLENDER COMPRESSED COLUMNS Ds10-3 CRITICAL STRESS OF COMPRESSED COLUMNS AS STRESS EXCEEDS PROPORTIONAL LIMIT ID 810-4 STABILITY CHECK AND REASONABLE SECTION OF COMPRESSED COLUMNS

3 CHAPTER 10 STABILIZATION OF COMPRESSIVE COLUMNS §10–1 CONCEPTS OF STABILITY OF COMPRESSED COLUMNS §10–2 EULER’S FORMULA OF THE CRITICAL FORCE OF SLENDER COMPRESSED COLUMNS §10–3 CRITICAL STRESS OF COMPRESSED COLUMNS AS STRESS EXCEEDS PROPORTIONAL LIMIT §10-4 STABILITY CHECK AND REASONABLE SECTION OF COMPRESSED COLUMNS

第十章压杆稳定 §10-1压杆稳定性的概念 §10-2细长压杆临界力的欧拉公式 □§103超过比例极限时压杆的临界应力 §10-4压杆的稳定校核及其合理截面

4 第十章 压杆稳定 §10–1 压杆稳定性的概念 §10–2 细长压杆临界力的欧拉公式 §10–3 超过比例极限时压杆的临界应力 §10-4 压杆的稳定校核及其合理截面

STABILIYOF COMPRESSED COLUMN 匚§10-1 CONCEPTS OFSTABILITY OF COMPRESSED COLUMNS ① Strength The load-carrying capacity of structure ② Rigidity members ③ Stability Some structure members In engineering have enough strength and rigidity but they are unable to work safely and reliably

5 §10–1 CONCEPTS OF STABILITY OF COMPRESSED COLUMNS The load-carrying capacity of structure members： ①Strength ②Rigidity ③Stability Some structure members in engineering have enough strength and rigidity but they are unable to work safely and reliably

10-1压杆稳定性的概念 构件的承载能力:①强度 ②2刚度 ③稳定性 工程中有些构 ∠.件具有足够的强度 刚度,却不一定能 安全可靠地工作 都感嘴

6 §10–1 压杆稳定性的概念 构件的承载能力： ①强度 ②刚度 ③稳定性 工程中有些构 件具有足够的强度、 刚度，却不一定能 安全可靠地工作

STABILIYOF COMPRESSED COLUMN 南昆铁路重点工程之一板其2号大依地形、山势,是中国第一座弯梁桥。 P 7

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定 南昆铁路重点工程之一板其2号大依地形、山势,是中国第一座弯梁桥。 P

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STABILIYOF COMPRESSED COLUMN I Stable and instable equilibrium 1). instable equilibrium

9 1、Stable and instable equilibrium ： 1). instable equilibrium

一、稳定平衡与不稳定平衡: 1.不稳定平衡 10

10 一、稳定平衡与不稳定平衡 ： 1. 不稳定平衡