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Structural Analysis

Frame Analysis in Structural Systems

Description

Frames are important parts of many mechanical and structural systems used every day. They are valued for stability and for their ability to bear heavy loads. A frame is built from two-force members and multi-force members, and the parts are connected with pin joints. Trusses are different because they are made entirely of tw...

Transcript

框架通常是刚性的固定结构,通常由销钉连接的构件组成,以形成一个稳定的系统,以支撑外部施加的载荷。

桁架由两个力构件制成,可承受拉力和压缩等轴向力,沿构件的轴线运行。

相比之下,框架由两个力杆件和至少一个多力杆件组成,该杆件由三个或更多力作用。

它们被广泛用作建筑物梁和柱、汽车底盘以及起重机和挖掘机等建筑设备的结构支撑。

要分析框架,请考虑一个处于平衡状态的起重机提升负载 W 的示例。

绘制起重机的自由体图以确定作用在框架上的外力。

此外,对自由体图的每个成员进行单独分析,以确定已知和未知的力。通常,首先考虑双力杆件。

然后,确定作用在多力杆件两端和连接点的力。

Tags

Frame AnalysisTwo Force MembersMulti Force MembersPin JointsFree Body DiagramStructural SupportsCrane LiftingForce DeterminationStructural DesignMechanical Systems