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Deflection of Beams

Beam Slope and Deflection by Singularity

Description

Beam slope and deflection can be found with singularity functions when beam loading is hard to write as one simple equation. This method is useful in structural engineering because it helps describe beams under several loads without breaking the problem into many separate cases.

Singularity funct...

Transcript

如果能够用单一解析函数表示弯矩,则可以采用积分法确定屋顶结构中梁的挠度。

然而,如果梁的载荷需要多个函数来表示弯矩,则需要引入更多的常数和方程,导致计算过程冗长。

可以使用奇异函数来简化这种复杂性。考虑一根两端支撑并承受偏心载荷的等截面梁。

该梁的剪力函数可用适当的奇异函数表示。通过对该剪力函数进行积分,可推导出弯矩函数。

通过积分该弯矩函数可得到梁的斜率和挠度。方程中的常数可根据边界条件确定。

使用奇异函数可以避免引入额外的常数和方程,从而简化计算过程。因此,奇异函数为计算复杂载荷作用下梁的斜率和挠度提供了一种高效的方法。