# 3.6.9: 梁的作用力 (Beam Forces)

有时需要将截面力和力矩表达为横截面局部轴方向上的分量，而不是其合成结果量。在这种情况下，请使用“Beam Forces（梁的作用力）”运算器。其输出的结构与“Beam Resultant Forces（梁合力）”运算器的结构相似，但其输出端口包括局部方向上的力分量（如图3.6.9.1）。

![图3.6.9.1：梁横截面力的方向（此处未显示扭转力矩Mx）](/files/-M9XuV6U7APF81BcF4t4)

所有元件及沿元件的所有工况的法向力、剪力和力矩的列表（如图3.6.9.2）。“LCase”和“BeamIds”输入可用于将结果限制为模型中梁的子集的特定荷载工况—其默认值“–1”将输出所有荷载工况的结果。“BeamIDs”输入端口的空字符串代表所有元件。输入参数“maxL”和“NRes”可确定沿梁轴的结果数值。“maxL”可用于控制结果数值之间的最大间距。“maxL”的负值表示最大间距的条件不存在。“NRes”设置沿梁的结果数值。梁的端点自动包含在其输出中。

![图3.6.9.2：在轴向和横向点荷载下的简支梁](/files/-M9XuV6Z7APm7JEDJDgr)


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