Orthotropy and geometry effects on stress concentration factors for short rectangular plates with a centred circular opening

Abstract

In this study, the effects of orthotropy ratio and plate length on the stress concentration factor for orthotropic plates with a centred circular opening under the action of uniaxial tension loads are investigated by use of the finite element method. This work demonstrates that the stress concentration factor depends on the length of the member in addition to other established geometric parameters. The value of the transition length between long and short plates is computed and reported as well. This study has shown that Tan's equation for a finite width orthotropic plate is accurate for a ratio of the opening radius to plate semiwidth of less than 0.35 for orthotropy ratios less than 50. A new concept is introduced, namely the transition ratio.

Obtainment of Stress Concentration Factors in Plates With Oblong Under Tension via Finite Element Method

“…Although many works have been reported based on plates with holes under tension, as for example (SANTOS, 2013), (BAKHSHANDEH et al, 2008), (WHITTLEY, 2013, (ZHUANG et al, 2015), (SAHU, 2017), (DEGHBOUDJ et al, 2016), there is still a lack of those studying the oblong case because only few of them bring this geometry, as in the cases of (REES et al, 2011), (BHUIYAN andALI, 2005), (FOLZKE et al, 2016).…”

Material orthotropy effects on progressive damage analysis of open-hole composite laminates under tension

“…An empirical correction factor is required together with the maximum tangential stress, which was used to estimate the notched strength of the laminates. Bakhshandeh and Rajabi 16 studied the effects of the orthotropy ratio and plate length on the stress concentration factor for orthotropic plates with an open hole via Tan’s method. In their study, as the laminate stiffness ratio, E yy /E xx increases, the error of the correction factor increases.…”

Length Influence on Stress Concentration in Orthotropic Plates

“…In reference [2] the same geometry and loading problem was considered for anisotropic plates. Figures were presented containing a variety of results including a single graph with values for TSCF´s, a corresponding single transition length curve, the TSCF dependency on the orthotropy ratio λ= E y /E x (E x and E y represent x and y directions moduli of elasticity respectively) and transition widths, keeping in all these studies E x > E y .…”