Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Description of anisotropic material response of wire and arc additively manufactured thin-walled stainless steel elements
Abstract In contrast to conventionally-produced structural steel and stainless steel elements, wire and arc additively manufactured (WAAM) elements can exhibit a strongly anisotropic material response. To investigate this behaviour, data obtained from tensile tests on machined and as-built coupons extracted from WAAM stainless steel sheets are analysed. The observed mechanical response in the elastic range is described accurately using an orthotropic plane stress material model requiring the definition of two Young’s moduli, the Poisson’s ratio and the shear modulus. In the inelastic range, the anisotropy is captured through the Hill yield criterion, utilising the 0.2% proof stresses in the three different loading directions relative to the deposition direction; plastic Poisson’s ratios are also reported. The presented findings and constitutive description highlight significant variation in the properties of the studied stainless steel with direction, which opens up opportunities to enhance the mechanical performance of WAAM structures by optimising both the location and orientation of the printed material.
Graphical abstract Display Omitted
Highlights Anisotropic response of wire and arc additively manufactured elements is described. Experimental data from tensile tests on machined and as-built coupons are analysed. Elastic response is characterised using an orthotropic plane stress material model. Inelastic response is captured using the Hill yield criterion. Reported parameters include Young’s and shear moduli, Poisson’s ratio and R-values.
Description of anisotropic material response of wire and arc additively manufactured thin-walled stainless steel elements
Abstract In contrast to conventionally-produced structural steel and stainless steel elements, wire and arc additively manufactured (WAAM) elements can exhibit a strongly anisotropic material response. To investigate this behaviour, data obtained from tensile tests on machined and as-built coupons extracted from WAAM stainless steel sheets are analysed. The observed mechanical response in the elastic range is described accurately using an orthotropic plane stress material model requiring the definition of two Young’s moduli, the Poisson’s ratio and the shear modulus. In the inelastic range, the anisotropy is captured through the Hill yield criterion, utilising the 0.2% proof stresses in the three different loading directions relative to the deposition direction; plastic Poisson’s ratios are also reported. The presented findings and constitutive description highlight significant variation in the properties of the studied stainless steel with direction, which opens up opportunities to enhance the mechanical performance of WAAM structures by optimising both the location and orientation of the printed material.
Graphical abstract Display Omitted
Highlights Anisotropic response of wire and arc additively manufactured elements is described. Experimental data from tensile tests on machined and as-built coupons are analysed. Elastic response is characterised using an orthotropic plane stress material model. Inelastic response is captured using the Hill yield criterion. Reported parameters include Young’s and shear moduli, Poisson’s ratio and R-values.
Description of anisotropic material response of wire and arc additively manufactured thin-walled stainless steel elements
Hadjipantelis, Nicolas (Autor:in) / Weber, Ben (Autor:in) / Buchanan, Craig (Autor:in) / Gardner, Leroy (Autor:in)
Thin-Walled Structures ; 171
29.10.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Structural Response of Wire Arc Additively Manufactured Steel T‐stub Connections
| Wiley | 2023