Application of simulation modelling in static tests of space-rocket vehicles

The study presents the principles of application of simulation modeling in conducting static tests of aerospace products using the small satellite (SS) «Aist-2D» as an example. Limitations of static tests that do not allow comprehensive analysis of the stress-strain state of a satellite are discussed. For example, it is not always possible to install sensors for measuring stress in remote locations. Simulation static tests using the finite element method with the use of the finite- element analysis MSC. Patran/Nastran package is proposed as an additional method of analyzing the stress-strain state of a product. The goals and tasks of the simulation tests are formulated and the main stages of the simulation modeling tests are described. To obtain consistent results of simulation modeling tests validation of the finite- element model of a satellite is required. The validation consists in confirming the adequacy of the model by analyzing the stress-strain state of the structure of the satellite. The main advantage of the simulation modeling test is the reduction of the cost of preparing and conducting the static tests. The efficiency of the method was confirmed in conducting the simulation modeling tests of the SS «Aist-2D», held in parallel with the static tests of the satellite. Thus, the application of the method of simulation modeling of static tests makes it possible to reduce the costs of static tests, improve the quality of static strength experiments and, consequently, increase the reliability of the satellite.