You should first determine the force reactions and zero force members before cutting sections. Then, if you prefer the method of sections over the method of joints, you can do the cut as you described and sum moments about appropriate points in the appropriate free body diagram, to solve for the unknown forces in members BE and BD.Isimanica said:
A truss is a structural framework composed of straight bars connected at their ends by joints. It is commonly used in construction to support roofs, bridges, and other structures.
The purpose of finding axial forces in a truss is to determine the internal forces and stresses acting on the members of the truss. This information is crucial for ensuring the structural integrity and safety of the truss.
Axial forces in a truss can be calculated using the method of joints or the method of sections. The method of joints involves analyzing the forces at each joint in the truss, while the method of sections involves cutting the truss into sections and analyzing the forces acting on each section.
The axial forces in a truss are affected by the loads applied to the truss, the geometry of the truss, and the properties of the truss members such as their material and cross-sectional area.
Axial forces in a truss are used in structural design to determine the required size and strength of the truss members. They also help engineers identify potential weak points in the truss and make necessary adjustments to ensure its structural stability.