Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy
While zinc die-casting alloy Zamak is widely used in vehicles and machines, its solidified state has yet to be thoroughly investigated experimentally or mathematically modeled. The material behavior is characterized by temperature and rate sensitivity, aging, and long-term influences under external...
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MDPI AG
2024-09-01
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| author | Maria Angeles Martinez Page Stefan Hartmann |
| author_facet | Maria Angeles Martinez Page Stefan Hartmann |
| author_sort | Maria Angeles Martinez Page |
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| description | While zinc die-casting alloy Zamak is widely used in vehicles and machines, its solidified state has yet to be thoroughly investigated experimentally or mathematically modeled. The material behavior is characterized by temperature and rate sensitivity, aging, and long-term influences under external loads. Thus, we model the thermo-mechanical behavior of Zamak in the solid state for a temperature range from −40 °C to 85 °C, and the aging state up to one year. The finite strain thermo-viscoplasticity model is derived from an extensive experimental campaign. This campaign involved tension, compression, and torsion tests at various temperatures and aging states. Furthermore, the thermo-physical properties of temperature- and aging-dependent heat capacity and heat conductivity are considered. One significant challenge is related to the multiplicative decompositions of the deformation gradient, which affects strain and stress measures relative to different intermediate configurations. The entire model is implemented into an implicit finite element program and validation examples at more complex parts are provided so that the predicability for complex parts is available, which has not been possible so far. Validation experiments using digital image correlation confirm the accuracy of the thermo-mechanically consistent constitutive equations for complex geometrical shapes. Moroever, validation measures are introduced and applied for a complex geometrical shape of a zinc die casting specimen. This provides a measure of the deformation state for complex components under real operating conditions. |
| format | Article |
| id | doaj-art-dffd3bd9d3834946b5be033f4ea62022 |
| institution | DOAJ |
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| language | English |
| publishDate | 2024-09-01 |
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| series | Applied Mechanics |
| spelling | doaj-art-dffd3bd9d3834946b5be033f4ea620222025-08-20T02:55:31ZengMDPI AGApplied Mechanics2673-31612024-09-015464669510.3390/applmech5040037Modeling and Simulation of the Aging Behavior of a Zinc Die Casting AlloyMaria Angeles Martinez Page0Stefan Hartmann1Institute of Applied Mechanics, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, GermanyInstitute of Applied Mechanics, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, GermanyWhile zinc die-casting alloy Zamak is widely used in vehicles and machines, its solidified state has yet to be thoroughly investigated experimentally or mathematically modeled. The material behavior is characterized by temperature and rate sensitivity, aging, and long-term influences under external loads. Thus, we model the thermo-mechanical behavior of Zamak in the solid state for a temperature range from −40 °C to 85 °C, and the aging state up to one year. The finite strain thermo-viscoplasticity model is derived from an extensive experimental campaign. This campaign involved tension, compression, and torsion tests at various temperatures and aging states. Furthermore, the thermo-physical properties of temperature- and aging-dependent heat capacity and heat conductivity are considered. One significant challenge is related to the multiplicative decompositions of the deformation gradient, which affects strain and stress measures relative to different intermediate configurations. The entire model is implemented into an implicit finite element program and validation examples at more complex parts are provided so that the predicability for complex parts is available, which has not been possible so far. Validation experiments using digital image correlation confirm the accuracy of the thermo-mechanically consistent constitutive equations for complex geometrical shapes. Moroever, validation measures are introduced and applied for a complex geometrical shape of a zinc die casting specimen. This provides a measure of the deformation state for complex components under real operating conditions.https://www.mdpi.com/2673-3161/5/4/37zinc die casting alloythermo-viscoplasticityagingmaterial modelingfinite strains |
| spellingShingle | Maria Angeles Martinez Page Stefan Hartmann Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy Applied Mechanics zinc die casting alloy thermo-viscoplasticity aging material modeling finite strains |
| title | Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy |
| title_full | Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy |
| title_fullStr | Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy |
| title_full_unstemmed | Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy |
| title_short | Modeling and Simulation of the Aging Behavior of a Zinc Die Casting Alloy |
| title_sort | modeling and simulation of the aging behavior of a zinc die casting alloy |
| topic | zinc die casting alloy thermo-viscoplasticity aging material modeling finite strains |
| url | https://www.mdpi.com/2673-3161/5/4/37 |
| work_keys_str_mv | AT mariaangelesmartinezpage modelingandsimulationoftheagingbehaviorofazincdiecastingalloy AT stefanhartmann modelingandsimulationoftheagingbehaviorofazincdiecastingalloy |