http://am.ing.unipi.it/index.php?action=history&feed=atom&title=Wire_Arc_Additive_Manifacturing 2026-04-30T17:30:07Z Cronologia della pagina su questo sito MediaWiki 1.31.0 http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=254&oldid=prev 2020-01-25T14:23:54Z

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BaldassareVitaggio http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=252&oldid=prev 2020-01-25T14:21:23Z

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BaldassareVitaggio http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=244&oldid=prev 2020-01-25T10:45:28Z

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ElisaSimonetti http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=174&oldid=prev 2020-01-08T17:32:55Z

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GiacomoTarabella http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=123&oldid=prev 2020-01-08T17:00:37Z

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GiacomoTarabella http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=121&oldid=prev 2020-01-08T16:59:51Z

<p>Pagina sostituita con &#039;*<a href="/index.php?title=Finite_element_modelling_of_Wire-Arc-Additive-Manufacturing_process" title="Finite element modelling of Wire-Arc-Additive-Manufacturing process">Finite element modelling of Wire-Arc-Additive-Manufacturing process</a>&#039;</p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="it"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Versione meno recente</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Versione delle 16:59, 8 gen 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Riga 1:</td> <td colspan="2" class="diff-lineno">Riga 1:</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">*[[</ins>Finite element modelling of Wire-Arc-Additive-Manufacturing process]]</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Title''': </del>Finite element modelling of Wire-Arc-Additive-Manufacturing process</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Authors''': Filippo Montevecchi, Giuseppe Venturini , Antonio Scippa , Gianni Campatelli</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Keywords''': Welding; Finite element method (FEM)</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> </del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Abstract''': Wire-Arc-Additive-Manufacturing (WAAM) is an Additive-Manufacturing (AM) process, allowing to produce metal components layer by layer by means of Gas-Metal-Arc-Welding (GMAW) technology. The advantages of this technology are the capability to create large parts with a higher deposition rate, but the disadvantages are that WAAM components are affected by severe distortions and residual stresses issues. Process simulation is a powerful tool to tackle such issues, allowing to test the effect of different deposition patterns on residual stresses field, optimizing the process.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Purpose''': Obtain more accurate results with a WAAM modelling strategy based on a novel heat source model that takes into account the actual power distribution between filler and base materials. </del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Design/methodology/approach''': the heat transfer from the arc to the molten pool is simulated using a heat source model, which prescribes a heat generation per unit volume in the molten pool region. Material deposition is taken into account by means of specific elements activation algorithms.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">In this paper, the WAAM process is simulated using a novel definition of the heat source, based on a modified Goldak model, in order to have a more realistic heat flow distribution in the filler material.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Findings''': this model has a better correlation with the experimental results than the previous models. </del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Benefits''': proposed modelling results are in general agreement with the experimental ones, allowing to achieve an higher accuracy with respect to the traditional technique.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Practical implications''': proposed process modelling allows to accurately simulate the WAAM process, without the need to perform time-consuming tuning operations to identify heat source parameters.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">&#160; </del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">[[File:Finite element Modelling.png|miniatura</del>]]</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Full reference''': Procedia CIRP 55</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Link''': www.sciencedirect.com/science/article/pii/S2212827116309131</del></div></td><td colspan="2">&#160;</td></tr> </table>

GiacomoTarabella http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=117&oldid=prev 2020-01-08T16:54:25Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="it"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Versione meno recente</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Versione delle 16:54, 8 gen 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l18" >Riga 18:</td> <td colspan="2" class="diff-lineno">Riga 18:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Practical implications''': proposed process modelling allows to accurately simulate the WAAM process, without the need to perform time-consuming tuning operations to identify heat source parameters.</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Practical implications''': proposed process modelling allows to accurately simulate the WAAM process, without the need to perform time-consuming tuning operations to identify heat source parameters.</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">&#160; </ins></div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''Graphical abstract''':&#160; </del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Finite element Modelling.png|miniatura]]</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Finite element Modelling.png|miniatura]]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> </table>

GiacomoTarabella http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=116&oldid=prev 2020-01-08T16:54:07Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="it"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Versione meno recente</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Versione delle 16:54, 8 gen 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Riga 1:</td> <td colspan="2" class="diff-lineno">Riga 1:</td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f8f9fa; color: #222; 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GiacomoTarabella http://am.ing.unipi.it/index.php?title=Wire_Arc_Additive_Manifacturing&diff=113&oldid=prev 2020-01-08T16:51:26Z

<p>Creata pagina con &quot;&#039;&#039;&#039;Title&#039;&#039;&#039;: Finite element modelling of Wire-Arc-Additive-Manufacturing process &#039;&#039;&#039;Authors&#039;&#039;&#039;: Filippo Montevecchi, Giuseppe Venturini , Antonio Scippa , Gianni Campatelli...&quot;</p> <p><b>Nuova pagina</b></p><div>'''Title''': Finite element modelling of Wire-Arc-Additive-Manufacturing process<br /> <br /> '''Authors''': Filippo Montevecchi, Giuseppe Venturini , Antonio Scippa , Gianni Campatelli<br /> <br /> '''Keywords''': Welding; Finite element method (FEM)<br /> <br /> '''Abstract''': Wire-Arc-Additive-Manufacturing (WAAM) is an Additive-Manufacturing (AM) process, allowing to produce metal components layer by layer by means of Gas-Metal-Arc-Welding (GMAW) technology. The advantages of this technology are the capability to create large parts with a higher deposition rate, but the disadvantages are that WAAM components are affected by severe distortions and residual stresses issues. Process simulation is a powerful tool to tackle such issues, allowing to test the effect of different deposition patterns on residual stresses field, optimizing the process.<br /> <br /> '''Purpose''': Obtain more accurate results with a WAAM modelling strategy based on a novel heat source model that takes into account the actual power distribution between filler and base materials. <br /> <br /> '''Design/methodology/approach''': the heat transfer from the arc to the molten pool is simulated using a heat source model, which prescribes a heat generation per unit volume in the molten pool region. Material deposition is taken into account by means of specific elements activation algorithms.<br /> In this paper, the WAAM process is simulated using a novel definition of the heat source, based on a modified Goldak model, in order to have a more realistic heat flow distribution in the filler material.<br /> <br /> '''Findings''': this model has a better correlation with the experimental results than the previous models. <br /> <br /> '''Benefits''': proposed modelling results are in general agreement with the experimental ones, allowing to achieve an higher accuracy with respect to the traditional technique.<br /> <br /> '''Practical implications''': proposed process modelling allows to accurately simulate the WAAM process, without the need to perform time-consuming tuning operations to identify heat source parameters.<br /> <br /> <br /> '''Graphical abstract''': <br /> <br /> <br /> '''Full reference''': Procedia CIRP 55<br /> <br /> '''Link''': www.sciencedirect.com/science/article/pii/S2212827116309131</div>

GiacomoTarabella