Probe of process of multiple-loop chains of parallel and consecutive joints B. Shаymamоv, D. Rahmatov, M. Khоlмurоdоv, A. Mukhtorov and M. Rаkhmamоvа E3S Web Conf., 216 (2020) 01142 Published online: 14 December 2020 DOI: 10.1051/e3sconf/202021601142