PSI - Issue 14

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com Procedia Structural Integrity 14 (2019) 915–921

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2452-3216  2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 10.1016/j.prostr.2019.07.071 2452-3216 © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 2452-3216 © 2018 The Authors. Published by Elsevier B.V. This is an open access article u der the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. Abstract The effect of filler volume fraction on the quasi-static compression behaviour of low volume fraction glass filled epoxy composites is demonstrated by plotting the stress vs. strain curves for the filler reinforced composites. The results indicate negligible influence of spherical particles on the yield and post yield behaviour of composites due to the large inter-particle separation distance at low volume fractions. To get more insight into the influence of filler shape on the deformation mechanisms, a computational study is performed where a set of inclusions surrounded by the epoxy matrix is modeled and the materials’ deformation response to the compressive loading is analyzed by conducting a two dimensional elasto-plastic finite element simulations. From this analysis, it is revealed that the compressive stresses in the fillers are not affected with increase in the filler volume fraction; but the Mises stresses in the matrix increases with the increase in the filler volume fraction in the hardening regime of the plastic flow curve. 1. Introduction Rigid particle reinforced polymer composites are used in several engineering applications, ranging from in MEMS and bio-medical devices to aerospace and civil structures. The functionality and the reliability of theses equipments invariably depend upon the mechanical and fracture response of composites. In general the composites’ mechanical characteristics are enhanced by varying the shape, size, distribution and volume fraction of fillers. Quite often, tensile or flexural experiments are conducted to evaluate the mechanical behaviour of materials. The Keywords: particulate reinforced epoxy composite, quasi-static compression, elasto-plastic simulation. Keywords: particulate reinforced epoxy composite, quasi-static compression, elasto-plastic simulation. * Corresponding author. Tel: +91-512-259-7060. E-mail address: kitey@iitk.ac.in * Corresponding author. Tel: +91-512-259-7060. E-mail address: kitey@iitk.ac.in 2nd International Conference on Structural Integrity and Exhibition 2018 Quasi static compression behavior of glass filled epoxy composites 2nd International Conference on Structural Integrity and Exhibition 2018 Quasi static compression behavior of glass fille epoxy composites Sarthak S. Singh a , P. Chakraborty b , R. Kitey c * a Ph.D student,Department of Aerospace Engineering, IIT Kanpur-208016, India. b Assistant Professor, Department of Aerospace Engineering, IIT Kanpur-208016, India. c Associate Professor,Department of Aerospace Engineering, IIT Kanpur-208016, India. Abstract The effect of filler volume fraction on the quasi-static compression behaviour of low volume fraction glass filled epoxy composites is demonstrated by plotting the stress vs. strain curves for the filler reinforced composites. The results indicate negligible influence of spherical particles on the yield and post yield behaviour of composites due to the larg inter-particle separation distance at low volume fraction . To get more insight into the influence of fi ler shape on the deformation mechanisms, a computational study is perfo med wher a s t of inclusions surrounded by the epoxy matrix is modeled a d the materials’ deformation response to the compr ssi e loading is analyzed by conducting a two dimensional elasto-plastic finite ele nt simulations. From th s analysis, it is revealed that the compressiv stresses in the fillers are not affected with increase in the filler volume fractio ; but the Mises stresses in the matrix increases with the incr ase in the filler volume fraction in the hardening r gime of the pl stic flow urve. 1. Introduction Rigid particle reinforced polymer composites are used in several engineering applications, ranging from in MEMS and bio-medical devices to aerospace and civil structures. The functionality and the reliability of theses equipments invariably depend upon the mechanical and fracture response of composites. In general the composites’ mechanical charact ristics are enhanced by varying the shape, siz , distribution and volume fraction of fillers. Quite often, te sile r flexural exp riments are conducted to evaluate t e me hanical behaviour of materials. The © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. Sarthak S. Singh a , P. Chakraborty b , R. Kitey c * a Ph.D student,Department of Aerospace Engineering, IIT Kanpur-208016, India. b Assistant Professor, Department of Aerospace Engineering, IIT Kanpur-208016, India. c Associate Professor,Department of Aerospace Engineering, IIT Kanpur-208016, India.