한국분말재료학회지 (Journal of Powder Materials)

  • 제29권4호
  • /
  • Pages.303-308
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  • 2022
  • /
  • 2799-8525(pISSN)
  • /
  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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개선된 회귀착점 방법을 이용한 이방성 적층구조물의 소성해석

Analysis of Anisotropic Plasticity of Additively Manufactured Structure using Modified Return Mapping Method

  • 양승용 (한국기술교육대학교 기계공학부) ;
  • 진두한 (주식회사 타드) ;
  • 김정한 (한밭대학교 신소재공학과)
  • 투고 : 2022.08.11
  • 심사 : 2022.08.22
  • 발행 : 2022.08.28
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초록

The plastic deformation behavior of additively manufactured anisotropic structures are analyzed using the finite element method (FEM). Hill's quadratic anisotropic yield function is used, and a modified return-mapping method based on dual potential is presented. The plane stress biaxial loading condition is considered to investigate the number of iterations required for the convergence of the Newton-Raphson method during plastic deformation analysis. In this study, incompressible plastic deformation is considered, and the associated flow rule is assumed. The modified return-mapping method is implemented using the ABAQUS UMAT subroutine and effective in reducing the number of iterations in the Newton-Raphson method. The anisotropic tensile behavior is computed using the 3-dimensional FEM for two tensile specimens manufactured along orthogonal additive directions.

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과제정보

이 논문은 2021년도 한국기술교육대학교 교수 교육연구진흥과제 지원에 의하여 연구되었음.

참고문헌

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