Calculation of Frame Internal Force Based on MATLAB Matrix Displacement Method

This paper describes how to design the program of continuous beam and rigid frame based on MATLAB and the matrix displacement method. The paper also points out the demonstration of matrix displacement method and the principle of MATLAB programming. As well as to realize the correspondence between manual calculation and computer calculation, some techniques are included, such as "multiplicative number method" and visual design, which will be shown in this paper. Therefore, this paper will be based on the structural mechanics textbooks, using MATLAB as a programming tool, combined with the principle of matrix displacement method, to achieve the whole process from inputting information to outputting the moment diagram.