DEVELOPMENT OF EFFICIENT REDUCED MODELS FOR RIGID BODY DYNAMICS SIMULATION FOR HELICOPTER MISSILE WING COMBINATIONS

摘要

Rigid body simulation models often require residual flexibility in order to obtain accurate model response. Accurate finite element models, validated by experimental modal tests and updated based on that test data, may be necessary to achieve the performance accuracy desired. Development of these large models and performance of the test and model updating can be difficult and time consuming. An alternate approach is proposed in which experimental measurements are used to derive a reduced order model. This reduced order model is then used to formulate the residual flexibility of the system without the need for a test-verified detailed finite element model. An example of a configuration which replicates a helicopter, wing and missile configuration is presented to show the use of the proposed techniques.