@inproceedings{f20a2ef64e574705adc2c7ca8473a4ff,
title = "Influence of void coalescence by direct impingement on spall response of polycrystalline metal",
abstract = "It is well known that the spall response of ductile metal is sensitive to its initial microstructures. The present work is focused on the grain size effect and void coalescence during the damage evolution. According to the geometric relationship between voids derived from the porosity and voids size, a criterion for the onset of void coalescence was proposed. Then, we propose an extended damage formulation combining void coalescence by direct impingement, which can describe the increase of porosity rate in view of the reduction of void number and increase of void size after the void coalescence. Our simulations show that the pull-back velocity increases with grain size. Besides, the void coalescence will enhance the magnitude of the spall peak and the acceleration rate after the pull-back minimum. These numerical results are in qualitative agreement with the corresponding experiment data.",
keywords = "Ductile metal, Grain size, Spall, Void coalescence",
author = "Zhang, {Feng Guo} and Shao, {Jian Li} and Pei Wang and Feng, {Qi Jing}",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing AG 2017.; 17th International Conference on Computational Science and Its Applications, ICCSA 2017 ; Conference date: 03-07-2017 Through 06-07-2017",
year = "2017",
doi = "10.1007/978-3-319-62407-5_51",
language = "English",
isbn = "9783319624068",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "701--709",
editor = "Beniamino Murgante and Apduhan, {Bernady O.} and Giuseppe Borruso and Alfredo Cuzzocrea and Torre, {Carmelo M.} and Osvaldo Gervasi and David Taniar and Elena Stankova and Rocha, {Ana Maria A.C.} and Sanjay Misra",
booktitle = "Computational Science and Its Applications - ICCSA 2017 - 17th International Conference, 2017",
address = "Germany",
}