Material forces in computational single-slip crystal-plasticity

Summary, in English

In this contribution, we elaborate the material force method with application to standard dissipative materials, in particular crystal-(elasto)plasticity. It thereby turns out that material heterogeneities caused by the gradient of the corresponding slip parameters induce additional material volume forces. As a result, we observe that these forces contribute to computations of typical boundary value problems as e.g. the calculation of the J-integral in fracture mechanics. Their impact on numerical results is discussed by means of a straight traction free crack under mode I loading conditions whereby, special emphasis is placed on different orientations of the underlying crystalline microstructure.

• Författare: Andreas Menzel; Ralf Denzer; Paul Steinmann
• Publiceringsår: 2005
• Språk: Engelska
• Sidor: 446-454
• Publikation/Tidskrift/Serie: Computational Materials Science
• Volym: 32
• Issue: 3-4
• Länkar: http://dx.doi.org/10.1016/j.commatsci.2004.09.021
• Dokumenttyp: Artikel i tidskrift
• Förlag: Elsevier
• Ämne: Mechanical Engineering
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0927-0256