Circumferential Stress Concentration Factors at the Asymmetric Shallow Notches of the Lifting Hooks of Trapezoidal Cross-Section

Stress Concentration at the Shallow Notches of the Curved Beams of Circular Cross-Section

“…The values of K t obtained by the FEA were used to find the fitting coefficients of Eqs. ( 1)-( 3), similarly as in the earlier presented work [2]. The fitting Eqs.…”

“…As it was demonstrated earlier [2], the finite element analysis (FEA) is a suitable way to calculate both: the maximal circumferential stresses ( max ) and the nominal circumferential stresses ( nom ) needed to obtain the K t . The finite element models were constructed employing symmetry boundary conditions (BC) that allowed to use 1/4 of the geometry.…”

“…6 by continuous lines. The dotted lines present the earlier considered cases for lifting hooks of trapezoidal cross-section [2] for comparison. As it can be seen, the c f curves are not coincident, but close within relative differrence not exceeding the 5%.…”

“…The article continues to present the research work on the estimation of the circumferential stress (  ) concentration factors (K t ) of the curved members effected by the asymmetric shallow notches. Previous publications [1,2] were focused on calculations of the K t for the notched lifting hooks of trapezoidal cross-section. The present article assumes the curved beam of the circular gross crosssection under the transverse load.…”

“…The present article assumes the curved beam of the circular gross crosssection under the transverse load. The method of the K t calculation is the same as in the previous article [2] therefore, will not be discussed here. However, the results will be presented for the additional 92 cases of different crosssection and notch geometry.…”