Internal Force Analysis and Calculation of Space Truss Beam Based on MATLAB

For the characteristics of the space truss beam such as many bars,complex load cases,large amounts of calculation,internal force diagram,the node method was used to summarize and deduce a recursive formula which was used for calculating each internal force of the truss rod,and its simulation calculation could be conducted with software MATLAB.According to the calculation formula deduced,this method uses mathematical transformation to build a space truss beam mathematical model,to determine the functional relationship between variables,and then to simulate output data and graphics through outputting the internal force calculation program of the chords and web members step-by-step.The stress state of the truss rod under different load combinations conditions can be obtained through the simulation results,and the force-bearing rod under the most unfavorable conditions was found out to provide a theoretical foundation for structural lightweight research.