Experimental and Numerical Study on Six- Point Bending Test of a Composite Stiffened Panel

Qiang Ye; San San Xiao; Pu Hui Chen

doi:10.4028/www.scientific.net/AMR.328-330.1309

Paper Titles

Research of Properties and Microstructure on High-Strength Casting of Turbo-Charger
p.1292

Property and Application of Austempered Ductile Cast Iron
p.1297

Research on Polypropylene Fiber and Mineral Admixtures on Fluidity of Cement-Based Materials
p.1301

The Formation of Super-Thin Dielectric Film on Porous Substrate and its Stopping – Transmittance Characteristics for Particles
p.1305

Experimental and Numerical Study on Six- Point Bending Test of a Composite Stiffened Panel
p.1309

A Method of MEMS Package Using Local Laser Bonding
p.1313

Investigation on the Load Capacity and Failure Process of T-Joint by Experiments and Numerical Method
p.1317

Realization of the Internet Based Telecooperation Robot System
p.1322

Synthesis and Properties of a Modified Sponge Iron for Removing Dissolved Oxygen
p.1326

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 328-330Experimental and Numerical Study on Six- Point...

Experimental and Numerical Study on Six- Point Bending Test of a Composite Stiffened Panel

Abstract:

A six-point bending test was presented to simulate skin/stiffener debonding under anti-symmetrical loading conditions. A novel rig was design via which the anti-symmetrical bending deformations can be forced on to the specimens. Experimental study on six-point bending test of composite stiffened panels of T700/QY8911 was done by using this rig. The tests are numerically analyzed using the finite element code ABAQUS, modeling the entire stiffened panel by shell elements, and investigating the progressive delamination by means of the cohesive zone model. The results of numerical analyses are compared to the experimental ones in terms of load-displacement curves and debonding positions between skin and stringer. The experimental and numerical resulits show that the anti-symmetrical bending deformation is the main factor which results in the asymmetrical propagation of the debonding between the skin and the stiffener. The failure mechanisms of the test are similar to the ones which induces skin/stiffener debonding during post-buckling in the anti-symmetrical buckling mode.