👉Shear force and bending moment are two fundamental internal actions that occur in structural members like beams when subjected to external loads.

💫Understanding their differences is crucial in civil engineering design and analysis.

🔹 Shear Force

- Definition: It is the internal force acting perpendicular to the longitudinal axis of a structural member.
- Calculation: Determined as the algebraic sum of vertical forces acting on either side of a section.
- Sign Convention: Positive shear force causes the left portion to move upward and the right portion downward.
- Effect: It tends to rotate the segment clockwise when positive, anticlockwise when negative.
- Structural Impact: Causes sliding between adjacent sections of the member.

🔹 Bending Moment

- Definition: It is the internal moment that causes a member to bend about its axis.
- Calculation: Found by taking the algebraic sum of moments of all forces about a section.
- Sign Convention: Positive bending moment (sagging) makes the beam concave upward, while negative bending moment (hogging) makes it convex upward.
- Effect: Positive bending moment induces compression in the top fibers and tension in the bottom fibers; negative bending moment reverses this.
- Structural Impact: Causes bending deformation of the structural member.

🔹 Conclusion

- Shear force → Sliding between sections.
- Bending moment → Bending of the member.

Both are essential in designing safe and efficient structures, as they dictate reinforcement placement, beam sizing, and overall stability.

#CivilEngineering
#ShearForce #BendingMoment #StructuralDesign #BeamAnalysis

@etconp

👉Structural Beam Analysis: FBD, SFD, and BMD

This diagram illustrates the internal forces and moments of a beam under various loads.

It includes the Free Body Diagram (FBD) showing applied forces and reactions, the Shear Force Diagram (SFD) displaying the shear distribution, and the Bending Moment Diagram (BMD) highlighting the peak moments and points of zero moment.

#StructuralEngineering #CivilEngineering #BeamAnalysis #SFD #BMD #EngineeringDiagram #Physics #Statics #StructuralMechanics

@etconp

👉Structural Beam Analysis

FBD, SFD, and BMD

This diagram illustrates the internal forces and moments of a beam under various loads.

It includes the Free Body Diagram (FBD) showing applied forces and reactions, the Shear Force Diagram (SFD) displaying the shear distribution, and the Bending Moment Diagram (BMD) highlighting the peak moments and points of zero moment.

#StructuralEngineering #CivilEngineering #BeamAnalysis #SFD #BMD #EngineeringDiagram #Physics #Statics #StructuralMechanics

@etconp