Digital element approach for simulating impact and penetration of textiles
| Autor: | Daniel Swenson, Bruce LaMattina, Yuyang Miao, Chian-Feng Yen, Bryan Cheeseman, Youqi Wang |
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| Rok vydání: | 2010 |
| Předmět: |
Engineering
Computer simulation business.industry Mechanical Engineering Aerospace Engineering Poison control Stiffness Ocean Engineering Izod impact strength test Yarn Structural engineering Dynamic simulation Mechanics of Materials Woven fabric visual_art Automotive Engineering medicine visual_art.visual_art_medium medicine.symptom Safety Risk Reliability and Quality business Civil and Structural Engineering Ballistic impact |
| Zdroj: | International Journal of Impact Engineering. 37:552-560 |
| ISSN: | 0734-743X |
| DOI: | 10.1016/j.ijimpeng.2009.10.009 |
| Popis: | A micro-scale computational tool, based upon an explicit digital element method (DEM), has been developed for numerical simulation of ballistic impact and penetration of textile fabrics. In this approach, each yarn is digitized as an assembly of digital fibers. Each digital fiber is further digitized into a short digital rod element chain connected by frictionless pins (nodes). A search is conducted to find contacts between adjacent digital fibers. If a contact is detected, compressive and frictional forces between fibers will be determined, based upon contact stiffness and friction coefficient. Nodal forces are calculated for each time step. Nodal displacements are determined using an explicit procedure. Because the digital element approach operates on a sub-yarn micro-scale, one can determine textile penetration resistance based upon sub-yarn scale properties, such as inter-fiber compression, friction, and fiber strength. Research presented in this paper includes three parts. First, the explicit digital element algorithm used in dynamic simulation is explained. Second, the approach is used to generate 2-D woven fabric micro-geometries and to simulate ballistic penetration processes. Third, numerical results are compared to high resolution experimental impact and ballistic test data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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