Computational Aeroelasticity Using Modal-Based Structural Nonlinear Analysis

What is it about?

Following the development of flexible aircraft, aeroelastic simulations must include geometric nonlinear effects as it is coupled to flight dynamics. Most of the computational tools used in industry for aeroelastic analysis are restricted to linear models for both the structural and the aerodynamic solutions. However, flexible wings may experience large deflections, where geometric nonlinearities impact the dynamic behavior considerably. This paper discusses a way of leveraging what is available today and enhancing it to capture the nonlinear effects present in advance wing designs.

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