What is influence line used for?
The most important use of influence line is finding out the location of a load for which certain response will have a maximum value. For example, we may need to find the location of a moving load (say a gantry) on a beam (say a gantry girder) for which we get the maximum bending moment at a certain point.
What are influence lines structural analysis?
Influence lines can be defined as a graph whose ordinates show the variation of the magnitude of a certain response function of a structure as a unit load traverses across the structure.
What is the influence line diagram?
Definition- An influence line for a member is a graph representing the variation of internal force( reaction, shear, moment, or deflection) in a fixed section of the member, due to a unit load traversing a structure.
What do you mean by influence lines?
1 : line of influence. 2 : a graph showing the variation of the longitudinal stress, shear, bending moment, or other effect upon a structural member due to a moving load as a function of the position of that load.
What is the purpose of influence line diagram?
What is Influence Line Diagram? It’s a diagram which shows the reactions, Shear force and Bending moment at each and every section or instant at any distance of any span that you want to find out. In short, Influence Line Diagram shows the influence or effect of loads or reaction on the span.
What is the use of influence diagram?
An influence diagram is an intuitive visual display of a decision problem. It depicts the key elements, including decisions, uncertainties, and objectives as nodes of various shapes and colors. It shows influences among them as arrows.
What is Eddy’s Theorem?
Eddy’s theorem states that “The bending moment at any section of an arch is proportional to the vertical intercept between the linear arch (or theoretical arch) and the centre line of the actual arch”.