A lattice discrete element method to model the falling-weight impact test of PMMA specimens
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- 作者：Luis E. Kosteskia ; luiskosteski@hotmail.com" class="auth_mail" title="E-mail the corresponding author ; Ignacio Iturriozb ; Adriá ; n P. Cisilinoc ; Ricardo Barrios D'ambrad ; Valeria Pettarinc ; Laura Fascec ; Patricia Frontinic
- 关键词：Impact test ; Impact of polymers ; Lattice discrete element methods ; Abaqus ; Explicit
- 刊名：International Journal of Impact Engineering
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：87
- 期：Complete
- 页码：120-131
- 全文大小：3068 K
文摘
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The falling-weight test of polymethyl-methacrylate (PMMA) specimens was modelled with the Lattice Discrete Element Method (LDEM).
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The Lattice Discrete Element Method is implemented using Abaqus/Explicit.
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The results are compared in terms of the time evolution of the striker force and velocity and the specimen crack patterns.
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There is a good agreement between experimental and numerical results.
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The variability toughness effects on test results are studied using models with random distribution of the fracture energy.