Enhancement of Drucker-Prager yield model by adding corner points for pressure-dependent materials
- 주제(키워드) 도움말 Constitutive modeling , Piecewise Drucker-Prager yield model , Polymers , Tangent operator of corner , User material subroutine
- 발행기관 KOREAN SOC MECHANICAL ENGINEERS
- 발행년도 2021
- 총서유형 Journal
- 본문언어 영어
초록/요약 도움말
To flexibly describe the pressure-dependent behaviors of materials, Drucker-Prager yield model is enhanced by introducing corner points. We call it piecewise Drucker-Prager (pDP) yield model. Constitutive model is derived by considering strain hardening with non-associative yield flows. Integration algorithm includes the return mapping to corner point. Consistent tangent operator is also formulated, and user material subroutine is written. It is demonstrated that the pDP model is effective in describing the pressure-dependent yield behavior of polymers.
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