Numerical modelling and simulation of RN-B composite joint tensile test and experimental validation
Marian Klasztorny, Agnieszka Bondyra, Roman Romanowski, Daniel Nycz, Paweł Gotowicki
Quarterly No. 3, 2012 pages 198-204
DOI:
keywords: polymer-matrix composite cover, rivetnut-bolt single-lap joint, technological clearances, tensile test, translational stiffness coefficients, 3D modelling, 2D modelling, simulation, experimental validation, MSC.Marc system
abstract The study develops the numerical modelling of a single rivetnut-bolt single-lap joint (RN-B) with in-plane and out-of-plane technological clearances, applied to joining longitudinal flanges of glass-polyester composite segments of tank covers. 3D modelling has been developed to simulate the RN-B joint tensile test aimed at determining the translational stiffness coefficients of the joint. Next, approximate 2D modelling of the RN-B joint tensile test has been developed using the translational stiffness coefficients (from 3D modelling and simulation), selected shell elements and the bushing-type bar element. The experimental validation test related to the RN-B joint tensile test has been examined up to full loss of load capacity. It has been proved that the translational stiffness coefficients in the elastic range (before joint failure) can be predicted correctly for a 3D joint model. The predicted stiffness coefficients can be applied in 2D modelling for the connections of shell segment flanges having the same stacking sequence of laminas. This approach is useful in engineering calculations and the design of glass-polyester laminate tank covers.