This is a free preview. For full access
Deflection of Beams
Beam Deflection from Loads and Supports
Description
Beam deflection depends on the loads on a beam and the support conditions at its ends. For indeterminate beams, especially those with overhanging parts and multiple concentrated loads, careful analysis is needed to predict how the beam will bend.
The first step is to draw an accurate free-body di...
Show More
Transcript
在梁的设计中,一个关键组成部分是挠度的识别与测量。在处理静不定梁时,必须全面理解挠度行为。
考虑一根承受两个集中载荷的悬臂梁。通过分析该梁的受力体图,可计算支座处的反力。
通过受力分析图和支座反力,可绘制出弯矩图,该图描述了梁的弯曲情况。
弯矩图显示,由于正弯矩的作用,梁在起点与某一特定点之间向上弯曲;而从该点到梁的末端,由于负弯矩的作用,梁向下弯曲。
曲线的最大值或最小曲率半径出现在弯矩最大的支座处。
为了对梁进行详细的分析与设计,必须精确掌握梁在不同位置的挠度和斜率数据,尤其需要重点关注最大挠度的理解。
Show More