Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio
This article summarizes the method of analytical formulation and computational approach of stress intensity factor and plastic zone calculation for auxetic materials, which have negative Poissons ratio. A chiral structure-based material is selected as an object of the study due to its popularity. Th...
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| Format: | Article |
| Language: | English |
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Taylor and Francis Ltd.
2015
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| Online Access: | http://eprints.utm.my/56148/1/YunanPrawoto2015_StressIntensityFactorandPlasticZoneofAuxeticMaterials.pdf |
| _version_ | 1796860331906039808 |
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| author | Prawoto, Yunan Alias, Amran |
| author_facet | Prawoto, Yunan Alias, Amran |
| author_sort | Prawoto, Yunan |
| collection | ePrints |
| description | This article summarizes the method of analytical formulation and computational approach of stress intensity factor and plastic zone calculation for auxetic materials, which have negative Poissons ratio. A chiral structure-based material is selected as an object of the study due to its popularity. The stress intensity factor is used in combination with the von Mises yielding condition to estimate the plastic zones shape and size. The results show that macroscopically the shape of the plastic zone for auxetic material is the same with that of ordinary materials. However, its size is smaller due to the reduction in its Youngs modulus from the solid material of which the auxetic material is made. Microscopically, an auxetic material has its plastic zone shape that is unique to its microstructure. Homogenization theory was convenient to use to bridge between the microscopic and macroscopic models. |
| first_indexed | 2024-03-05T19:39:47Z |
| format | Article |
| id | utm.eprints-56148 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T19:39:47Z |
| publishDate | 2015 |
| publisher | Taylor and Francis Ltd. |
| record_format | dspace |
| spelling | utm.eprints-561482016-11-16T00:53:37Z http://eprints.utm.my/56148/ Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio Prawoto, Yunan Alias, Amran TJ Mechanical engineering and machinery This article summarizes the method of analytical formulation and computational approach of stress intensity factor and plastic zone calculation for auxetic materials, which have negative Poissons ratio. A chiral structure-based material is selected as an object of the study due to its popularity. The stress intensity factor is used in combination with the von Mises yielding condition to estimate the plastic zones shape and size. The results show that macroscopically the shape of the plastic zone for auxetic material is the same with that of ordinary materials. However, its size is smaller due to the reduction in its Youngs modulus from the solid material of which the auxetic material is made. Microscopically, an auxetic material has its plastic zone shape that is unique to its microstructure. Homogenization theory was convenient to use to bridge between the microscopic and macroscopic models. Taylor and Francis Ltd. 2015 Article PeerReviewed application/pdf en http://eprints.utm.my/56148/1/YunanPrawoto2015_StressIntensityFactorandPlasticZoneofAuxeticMaterials.pdf Prawoto, Yunan and Alias, Amran (2015) Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio. Mechanics of Advanced Materials and Structures, 22 (3). pp. 213-223. ISSN 1537-6494 http://dx.doi.org/10.1080/15376494.2012.730171 DOI:10.1080/15376494.2012.730171 |
| spellingShingle | TJ Mechanical engineering and machinery Prawoto, Yunan Alias, Amran Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio |
| title | Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio |
| title_full | Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio |
| title_fullStr | Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio |
| title_full_unstemmed | Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio |
| title_short | Stress intensity factor and plastic zone of auxetic materials: a fracture mechanics approach to a chiral structure having negative poissons ratio |
| title_sort | stress intensity factor and plastic zone of auxetic materials a fracture mechanics approach to a chiral structure having negative poissons ratio |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/56148/1/YunanPrawoto2015_StressIntensityFactorandPlasticZoneofAuxeticMaterials.pdf |
| work_keys_str_mv | AT prawotoyunan stressintensityfactorandplasticzoneofauxeticmaterialsafracturemechanicsapproachtoachiralstructurehavingnegativepoissonsratio AT aliasamran stressintensityfactorandplasticzoneofauxeticmaterialsafracturemechanicsapproachtoachiralstructurehavingnegativepoissonsratio |