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Constitutive modeli...
Constitutive modeling of commercial pure titanium sheet based on non-associated flow rule and differential hardening
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- Kim, Jinjae (författare)
- Kyungpook National University, KOR
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- Tuan Pham, Quoc (författare)
- Blekinge Tekniska Högskola,Institutionen för maskinteknik
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- Ha, Jinjin (författare)
- University of New Hampshire, USA
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- Kim, Young Suk (författare)
- Kyungpook National University, KOR
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: International Journal of Mechanical Sciences. - : Elsevier. - 0020-7403 .- 1879-2162. ; 230
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The commercial-pure titanium (CP-Ti) sheet has attracted a great interest from biomedical and aerospace industries because of its strong mechanical advantages such as lightweight, high strength, good formability, and corrosion-resistance. However, strong anisotropic features, such as evolutionary yield surface and strength difference in tension and compression, of the CP-Ti require advanced constitutive modeling compared to standard advanced high strength steel sheets. This study took into account the differential hardening behavior and the changing R-value of CP-Ti sheet observed during the uniaxial tensile and bulge tests in developing a material model. The observed behaviors are modeled by Hill48 quadratic function based on non-associated flow rule with equivalent plastic work dependent evolutionary parameters. The developed material model was then implemented into a user material subroutine (VUMAT) for ABAQUS/EXPLICIT and used to simulate a circular deep drawing to verify the developed model. Simulation results are compared with those of a material model coupling Yld2000–2d yield function with associated flow rule. The comparison shows that the developed material model provides not only a good agreement with the experiment for yield and potential surfaces but also accurate predictions in forming simulations.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Anisotropic yield function
- Commercial pure titanium
- Differential hardening
- Evolutionary parameters
- Finite element analysis
- Non-associated flow rule
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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