Strain-based geometrically nonlinear beam formulation for modeling very flexible aircraft
نویسندگان
چکیده
منابع مشابه
Geometrically Nonlinear Aeroelastic Scaling for Very Flexible Aircraft
High-aspect-ratio wings present in very flexible aircraft can undergo large deformations, which results in significant changes in natural frequencies as well as in static and dynamic aeroelastic response. This geometric nonlinear behavior becomes an integral part of any aeroelastic analysis to be conducted in such class of vehicles. Aeroelastic scaling is an important way to study the aeroelast...
متن کاملModeling for Control of Very Flexible Aircraft
The first investigations into the dynamics of a highly flexible aircraft came from the Daedalus Project, initiated in 1984. 3 The goal of this project was to push the limits of human powered flight while promoting engineering, science and education. Prior to the Daedalus Project the longest distance traveled by a human powered plane was 23 miles, a record set in 1979 with a flight across the En...
متن کاملUnified formulation of geometrically nonlinear refined beam theories
By using the Carrera Unified Formulation (CUF) and a total Lagrangian approach, the unified theory of beams including geometrical nonlinearities is introduced in this paper. According to CUF, kinematics of one-dimensional structures are formulated by employing an index notation and a generalized expansion of the primary variables by arbitrary cross-section functions. Namely, in this work, lowto...
متن کاملNonlinear Aeroelasticity of a Very Flexible Blended-Wing-Body Aircraft
This paper presents a study on the coupled aeroelastic/flight dynamic stability and gust response of a blendedwing-body aircraft that derives from the U.S. Air Force’s High Lift-Over-Drag Active (HiLDA) wing experimental model. An effective method is used to model very flexible blended-wing-body vehicles based on a low-order aeroelastic formulation that is capable of capturing the important str...
متن کاملNonlinear Aeroelastic Modeling and Analysis of Fully Flexible Aircraft
This paper introduces an approach to effectively model the nonlinear aeroelastic behavior of fully flexible aircraft. The study is conducted based on a nonlinear strainedbased finite element framework in which the developed low-order formulation captures the nonlinear (large) deflection behavior of the wings, and the unsteady subsonic aerodynamic forces acting on them. Instead of merely conside...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Solids and Structures
سال: 2011
ISSN: 0020-7683
DOI: 10.1016/j.ijsolstr.2011.04.012