Analyzing the failure and damage of FRP composite laminates under high strain rates considering visco-plasticity

Abstract

In order to analyze composite structures under dynamic condition or model manufacturing processes in which high strain rates exist, it is important to develop a constitutive model that regards these effects. In this work, a phenomenological approach is used to formulate a continuum damage for composites in presence of high strain rates. Visco-plastic behavior of the composite is taken into account and the deformation of composite structures under dynamic conditions is studied. Effects of dynamic conditions on the material properties including strength and fracture toughness are included in the modeling. The model can capture the effects of strain rate on material behavior and has a good capability in the prediction of the response and final strength of composite laminates in comparison with the experimental data under medium and high rates.

An Efficient Approach to Describe the Fiber Effect on Mechanical Performance of Pultruded GFRP Profiles

“…1) Verification of constitutive models, using test results of laboratory specimens (Li et al, 2015;Thorhallsson et al, 2017;Siwowski et al, 2018;Chen et al, 2019;Eskandari et al, 2019;Xing et al, 2019;Zhang et al, 2019aZhang et al, , 2019b. 2) Analysis of full-scale structural elements (He et al, 2012;Votsis et al, 2017;Mahboubi and Shiravand, 2019;Muc et al, 2020;Yang et al, 2020).…”

“…Figure 1 schematically describes the distribution structure of the selected articles (Keller and Schollmayer, 2004;He et al, 2012;Li et al, 2015;Robinson and Melby, 2015;Cai et al, 2017;Thorhallsson et al, 2017;Votsis et al, 2017;Mandal and Chakrabarti, 2018;Siwowski et al, 2018Siwowski et al, , 2019Chen et al, 2019;Eskandari et al, 2019;Mahboubi and Shiravand, 2019;Papapetrou et al, 2019;Xing et al, 2019;Yuan et al, 2019;Zhang et al, 2019aZhang et al, , 2019bMuc et al, 2020;Yang et al, 2020) regarding the simulation object, loading situation, and modeling parameters. The literature analysis identified the following simulation targets (aspects): failure of FRP composites (Eskandari et al, 2019), debonding (Cai et al, 2017;Muc et al, 2020), and the structural components elastic simplifications (Keller and Schollmayer, 2004;He et al, 2012;Votsis et al, 2017;Mandal and Chakrabarti, 2018;Yuan et al, 2019;Yang et al, 2020). The first two aspects are typical for the analysis of the laboratory samples (Cai et al, 2017;Eskandari et al, 2019;Muc et al, 2020)-a bending specimen is the typical research object (Figure 1B).…”

“…The literature analysis identified the following simulation targets (aspects): failure of FRP composites (Eskandari et al, 2019), debonding (Cai et al, 2017;Muc et al, 2020), and the structural components elastic simplifications (Keller and Schollmayer, 2004;He et al, 2012;Votsis et al, 2017;Mandal and Chakrabarti, 2018;Yuan et al, 2019;Yang et al, 2020). The first two aspects are typical for the analysis of the laboratory samples (Cai et al, 2017;Eskandari et al, 2019;Muc et al, 2020)-a bending specimen is the typical research object (Figure 1B). In some cases, shear failure (Eskandari et al, 2019;Xing et al, 2019), the composite components' bond behavior and inter-laminar slippage are among the modeling parameters (Robinson and Melby, 2015;Cai et al, 2017;Chen et al, 2019;Eskandari et al, 2019;Muc et al, 2020).…”

“…The first two aspects are typical for the analysis of the laboratory samples (Cai et al, 2017;Eskandari et al, 2019;Muc et al, 2020)-a bending specimen is the typical research object (Figure 1B). In some cases, shear failure (Eskandari et al, 2019;Xing et al, 2019), the composite components' bond behavior and inter-laminar slippage are among the modeling parameters (Robinson and Melby, 2015;Cai et al, 2017;Chen et al, 2019;Eskandari et al, 2019;Muc et al, 2020). Figure 1C shows that elastic constitutive (or elasticplastic) models are typical for numerical analysis and do not focus on full-scale structures (He et al, 2012;Votsis et al, 2017;Mahboubi and Shiravand, 2019;Yang et al, 2020).…”

“…The advanced simulations attempt to represent the physical heterogeneity intrinsic to FRP composites. The difference in the elastic moduli specified in different directions often simulates the material anisotropy (He et al, 2012;Robinson and Melby, 2015;Chen et al, 2019;Eskandari et al, 2019;Papapetrou et al, 2019;Muc et al, 2020). The typical numerical models assume FRP material structure homogeneous, making no distinction between the polymer and filament materials.…”