Refined Structural Model for Thin- and Thick-Walled Composite Rotor Blades

A new super convergent thin walled composite beam element for analysis of box beam structures

“…Comparisons provided with experimental results and analytically evaluated cross-sectional stiffnesses by Jung et al (2002), show good correlation with results generated from the single formulated element. Cantilever graphite-epoxy I-beam having material properties as given in Table 1 (except G 23 ¼ 0:89 Â 10 6 psi) and sectional dimension of 1.0 in.…”

“…A finite element based cross-sectional analysis using variational asymptotic method and incorporating transverse shear effect is presented by Popescu and Hodges (1999). A first order shear deformable analytical cross-sectional modeling technique was proposed by Jung et al (2002) without neglecting in-plane bending moments.…”

An asymptotic analysis of composite beams with kinematically corrected end effects

“…There are extension-twist and bending-shear couplings in the CUS configuration, whereas bending-torsion and extension-shear couplings in the CAS configuration. The present results are compared to those obtained by VABS (Yu et al, 2002), NABSA, Jung et al (2002) and Kim and White (1997) as well as experimental results obtained by Chandra et al (1990). The results of VABS, NABSA and Jung et al (2002) presented herein are reproduced by taking their stiffness models from references and applying them to a typical Timoshenko beam model.…”

“…Bending 2 Bending 3 Torsion NABSA and Jung et al (2002) slightly deviate from 3D FEM ones. For CAS1 and CAS3 configurations, induced twist distributions due to a vertical shear force are presented in Figs.…”

“…14, 16, 18 and 19. As discussed in Popescu and Hodges (2000) and Yu et al (2002), the 6 Â 6 stiffness matrix of VABS is different from that of NABSA for the CUS1 configuration (Case 2), whereas that from Jung et al (2002) is well correlated with NABSA. This case under a horizontal shear force is shown in Fig.…”