Joint simulation method for carrier rocket pipeline

The invention provides a joint simulation method for a carrier rocket pipeline. The joint simulation method at least comprises the following steps: drawing three-dimensional models of an engine system, a structure system and a pipeline system; joint simulation is carried out on the engine system, the structure system and the pipeline system, and stress distribution of the structure under the static load working condition is obtained; static load working conditions of the pipeline, the support and the boundary flange are calculated; calculating dynamic load working conditions of the pipeline, the bracket and the boundary flange; performing comprehensive evaluation on the static load working condition and the dynamic load working condition to obtain a dynamic load; analyzing the dynamic load working condition intensity according to the dynamic load; and performing strength evaluation according to the stress distribution of the structure under the static load working condition and the strength of the dynamic loa