Long glass fiber-reinforced polypropylene (LGFR-PP) composite structures with stiffeners are important substitutes for metal parts vehicle lightweighting; a good understanding of the buckling characteristics LGFR-PP would provide an reference engineering design. The current work is therefore intended to study different cross-sectioned under axial compression via experimental and theoretical ana...

Composite stiffened cylindrical shells are widely used as primary elements in aerospace structures. In the recent years, there has been a growing research interest in optimum design of composite stiffened cylindrical shell structures for stability under buckling load.  This paper focuses upon the development of an efficient optimization of ring-stringer stiffened cylindrical shell. The opti...

Despite their importance in benchmarking numerical simulations, buckling tests still feature compromises between component-level and high-fidelity large-scale tests. For example, compression-induced cannot capture the through-thickness or span-wise stress gradients wing skins. Consequently, results obtained often require careful interpretation conservative considerations before applying to a st...

This study presents finite element analysis of double split tee (DST) connections with high-strength steel bolts and coupled sections, to evaluate various cyclic response parameters elements. The investigation included quantifying connection behavior hysteretic response, damage indexes, failure modes. Over 40 specimens were simulated in ABAQUS under loading, including shape memory alloy (SMA)-b...

The free flexural vibration of a stiffened rectangular plate is investigated by using the finite element method (FEM). In the present model, the plate can have arbitrary elastic boundary conditions and arbitrarily located stiffeners. Numerical studies are conducted to analyze the natural frequencies of concentrically/eccentrically stiffened plates with different boundary conditions and the resu...

This paper summarizes fatigue test on high strength steel specimens in the as-welded condition and specimens treated by ultrasonic impact treatment, TIG dressing and a combination of TIG dressing and ultrasonic impact treatment. Single lap joint specimens in 6 mm aluminium plate material were tested in the as-welded, hammer peened, needle peened and ground condition. Aluminium joints with longi...