SA70: Analysis of a hinged frame using the Matrix Displacement Method

[@hawsaromerhama725]

i hope one day provide course for finite element analysis like such beautiful and understood lectures

[@abdirahmanismacil8125]

please create RCC two or four frame analysis by using moment distribution method or slope-deflection method

[@cedricmwendanga5803]

which software do you use to create these videos, i want to use it for my defense thank you

[@DrStructure]

We mainly use Adobe Illustrator, Camtasia Studio, and Reallusion software for creating our lectures.

[@aleksandreakhvlediani8034]

In last lectures, you called "I" second moment of area. Here you call it moment of inertia. Can you expand on that?

[@DrStructure]

In structural engineering, the terms second moment of area and moment of inertia are often used interchangeably because, for most structural applications, the mass distribution across the cross section remains constant. This consistency allows us to focus solely on the geometry of the cross-section rather than on varying mass, which simplifies the analysis. The second moment of area, which is a measure of a cross-section’s resistance to bending, depends only on the shape and dimensions of the cross-section. Since the material density doesn’t typically change across the cross-section of structural elements, the second moment of area becomes the primary factor affecting bending and deflection. In this context, “moment of inertia” is commonly used as a shorthand, even though it technically refers to mass moment of inertia in physics. Because structural engineers rarely need to account for changing mass within the cross-section, they often use the term “moment of inertia” to describe the second moment of area. This interchangeable use has become common practice, as it reflects the fact that structural elements are evaluated mainly on their geometric properties and their resistance to bending, not on rotational dynamics where mass distribution would be crucial.

[@aleksandreakhvlediani8034]

@@DrStructure Thanks!