This article is devoted to the study of nonlinear oscillations of one of the most common systems with three degrees of freedom – a three-link mathematical pendulum. the parameters of all weightless links and all end loads of which are assumed to be identical. The wide use of the three-link pendulum model in applied problems of robotics and biomechanics. as well as its important ... https://thebrickes.shop/product-category/sofa-bed-topper/