In this paper, crack growth analyses on composite panels containing embedded delaminations has been performed using a geometrically non linear FEM code, based on the Total Lagrangian Formulation. The code has been improved with an effective Virtual Crack Closure Technique to evaluate Energy Release Rate and with Penalty Method to evaluate contact forces. Validation of the proposed tool has been performed with experimental and numerical data available in bibliography for Double Cantilever Beam specimens. Finally, the influence of delamination’s geometrical parameters on the Energy Release Rate distribution during delamination growth in composite panels under compression has been analysed.
Progressive Failure Analysis of Bolted Composite Joints
RICCIO, Aniello;
1999
Abstract
In this paper, crack growth analyses on composite panels containing embedded delaminations has been performed using a geometrically non linear FEM code, based on the Total Lagrangian Formulation. The code has been improved with an effective Virtual Crack Closure Technique to evaluate Energy Release Rate and with Penalty Method to evaluate contact forces. Validation of the proposed tool has been performed with experimental and numerical data available in bibliography for Double Cantilever Beam specimens. Finally, the influence of delamination’s geometrical parameters on the Energy Release Rate distribution during delamination growth in composite panels under compression has been analysed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
