# 21.20 More about beams

Before you read this, I suggest you read posts 21.17 and 21.19. This post is a continuation of post 21.19. I am going to use the ideas in post 21.19 to develop the equations stated, without proof, in post 21.17, that allow us to calculate the deflection and maximum stress in two examples of beams:… Continue reading 21.20 More about beams

# 21.19 Bending a beam

Before you read this, I suggest you read post 21.17. In post 21.17, we saw that beams can support a load because they are bent by it. I also gave some rules for calculating the deflection of some simple beams and the maximum stress in them. But I didn’t explain how these rules are derived.… Continue reading 21.19 Bending a beam

# 21.18 Statically indeterminate systems

In post 20.15, we saw how to calculate the forces that could maintain a system in equilibrium. We developed equations, by equating the vector sum of the forces acting on the system and the vector sum of the torques acting on the system, that could be solved to find the forces. But suppose the equations… Continue reading 21.18 Statically indeterminate systems