Types of 1D Structural Elements — Lesson 2

This lesson covers the concept of one-dimensional structural components, specifically focusing on rigid bodies or systems of rigid bodies that make up a structure. The lesson delves into the types of forces acting on these structures, such as axial, shear, or moment resultants. It further explains the concept of a link member, also known as a Truss member or an axial member, which is a prevalent type of member in many structures. The lesson also introduces the concept of sign convention for internal forces, explaining how tension and compression are represented. For instance, if a one-dimensional member is in tension, the internal force causing this tension is considered a positive value.

Video Highlights

00:05 - Introduction to one-dimensional structural components
01:08 - Explanation of forces acting on these structures
02:31 - Advantages of using simple members in structural systems
02:58 - Examination of internal forces in a link member
07:07 - Introduction to the concept of sign convention for internal forces
09:00 - Explanation of tension and compression in one-dimensional members
11:18 - Discussion on the prevalence of link members in many structures

Key Takeaways

- One-dimensional structural components are made up of rigid bodies or systems of rigid bodies.
- The forces acting on these structures can be axial, shear, or moment resultants.
- A link member, also known as a Truss member or an axial member, is a common type of member in many structures.
- The sign convention for internal forces helps in understanding the tension and compression in one-dimensional members.
- If a one-dimensional member is in tension, the internal force causing this tension is considered a positive value.