@ARTICLE{10.21494/ISTE.OP.2018.0310, TITLE={Computer-assisted study of the dynamic behavior of a manipulator arm}, AUTHOR={Trésor Kanyiki, François Ntambwe, }, JOURNAL={Uncertainties and Reliability of Multiphysical Systems}, VOLUME={2}, NUMBER={Issue 2}, YEAR={2018}, URL={https://www.openscience.fr/Computer-assisted-study-of-the-dynamic-behavior-of-a-manipulator-arm}, DOI={10.21494/ISTE.OP.2018.0310}, ISSN={2514-569X}, ABSTRACT={This article analyzes a numerical solution to solve the differential equations that describe the dynamic behavior of a multibody system. Mechanics suffer from high experimental costs, in some circumstances, sometimes the engineer is unable to test a model, for example in aerospace engineering, it’s hard to create the conditions under the prototype has to evolve. Simulation tools are essential and have become a competitive engineering system. The dynamic of mechanical systems play a fundamental role in establishing a relationship between the causes and the resulting reactions. In this article, we presented Lagrange’s method to establish the differential equations that describe dynamic behaviors of a multibody system, to applying them to the manipulator arm. Analytical resolution by classical methods proves difficult, numerical methods are essential; furthermore, calculation of one iteration by numerical methods can take several hours manually; the use of simulation software is essential. In this article, we have exploited Easydy software who uses the numerical method Newmark.}}