Web-crippling of GFRP pultruded profiles. Part 2: Numerical analysis and design

Web-crippling of GFRP pultruded profiles. Part 1: Experimental study

“…Moreover, all specimens tested with the shortest bearing length (15 mm) failed due to the crushing of the web, showing that such bearing length causes high stress concentrations, as expected and as discussed in Part 2 [1]. For longer bearing lengths, in which the force is distributed in a larger area, thus inducing lower local stresses, some of the ETF specimens failed due to the buckling of the web, namely all specimens from series I120-ETF-50, I120-ETF-100 and I400-ETF-100 (the slenderest specimens, cf.…”

“…In a companion paper (Part 2 [1]), the experimental data presented herein are compared to (i) numerical results obtained from finite element models, and (ii) analytical predictions obtained from design formulae available in the literature and a new design formula proposed by the authors.…”

“…The experimental characterization of the materials allowed the comparison of the web-crippling experimental results with predictions obtained from design formulae reported in the literature, and were also used as input for the numerical models and analytical formulae presented in the companion paper (Part 2 [1]). …”

“…It should be noted that the latter expressions consider a uniform load distribution throughout the length of the loaded edges and, therefore, are not valid for specific web-crippling load configurations (the actual values of r cr for the load configurations used in the experimental tests were determined by numerical simulations and are presented in a companion paper -Part 2 [1]), but are used as a mean to evaluate the profiles' web buckling proneness. Table 1 presents the effective slenderness for both load configurations ð k ITF and k ETF Þ of all profiles determined as explained above, showing that the I100 profile is the stockiest, the I400 profile is the slenderest, which is in accordance with their geometrical slenderness (k w ), while profile I120 has higher effective slenderness compared to profile I200 although presenting the same geometrical slenderness.…”

“…The present paper presents and discusses the results of the experimental tests. In a companion paper (Part 2 [1]), the experimental data presented here is compared with results of (i) numerical simulations and (ii) GFRP pultruded profiles specific analytical formulae. …”