Parametric investigation of vibration of stiffened structural steel plates using finite element analysis and grey relational analysis

Thin plates with arbitrary shapes and stiffeners find wide usage in construction, aerospace, marine, etc. industries. In the present work a parametric investigation of thin structural steel has been carried out. The design parameters considered were subtended angle aspect ratio to account for different used various applications. Another parameter that was is stiffener its orientation. impact varying on first five modal frequencies turn stiffness as response. Finite element method (FEM) coupled Taguchi’s L16 orthogonal array grey relational analysis maximize natural simultaneously. plate subjected when all sides are simply supported boundary condition. optimum combination variables predicted by 80° angle, 1.75:1 crossed orientation simultaneous maximization frequencies. Analysis variance revealed highest contribution type which affects 5