To reduce the longitudinal loads acting on the body of an open wagon during the transportation of containers, it is proposed to improve their interaction scheme, namely the use of an elastic-frictional connection between fittings and fitting stops. The substantiation of such a fastening scheme was carried out by mathematical modeling of the dynamic loading of an open wagon loaded with containers. The study was carried out in a plane coordinate system. The most unfavorable loading regime of an open wagon, namely shunting collision, was taken into account. The calculation results showed that the accelerations acting on the body of an open wagon are lower than those acting in a typical scheme of interaction of fittings with fitting stops by 15%. The results of the calculation for the strength of the open wagon body are given. It is established that its strength is ensured. Also, within the framework of the study, a calculation was made for the strength of the welding seam of the fitting stop in the zone of interaction with the floor of the body. The conducted studies will contribute to increasing the efficiency of container transportation, as well as the operation of railway transport.