TY - JOUR
T1 - Impact test behavior of aluminum alloys welded joints
T2 - Experimental and numerical analysis
AU - Frutos Martínez, José A.
AU - Ambriz, Ricardo R.
AU - Naït-Abdelaziz, Moussa
AU - Jaramillo, David
N1 - Publisher Copyright:
© 2021 John Wiley & Sons, Ltd.
PY - 2021/8
Y1 - 2021/8
N2 - The Charpy impact test behavior of base metal, weld metal, and heat-affected zone for 6061-T6 and 7075-T651 aluminum alloy welds was analyzed. Force versus time curves of welded joints were obtained by means of an instrumented Charpy pendulum. An explicit finite element model was implemented to evaluate the performance of the Cowper–Symonds constitutive model. Parameters were obtained through a strain-rate-sensitivity analysis of base metals at high strain rates. Experimental results were compared with those computed by finite element method (FEM) by assuming the same physical and geometrical conditions of the dynamic-experimental tests. ANSYS-LS DYNA was used to achieve the FEM simulations. The comparison between experimental and FEM results in terms of force versus time data was evaluated. Higher accuracies were observed in Al 7075-T651 alloy (roughly 98%). The 6061-T6 alloy has shown an approximation of about 90%. Discrepancies are explained in terms of the effective plastic strain at fracture.
AB - The Charpy impact test behavior of base metal, weld metal, and heat-affected zone for 6061-T6 and 7075-T651 aluminum alloy welds was analyzed. Force versus time curves of welded joints were obtained by means of an instrumented Charpy pendulum. An explicit finite element model was implemented to evaluate the performance of the Cowper–Symonds constitutive model. Parameters were obtained through a strain-rate-sensitivity analysis of base metals at high strain rates. Experimental results were compared with those computed by finite element method (FEM) by assuming the same physical and geometrical conditions of the dynamic-experimental tests. ANSYS-LS DYNA was used to achieve the FEM simulations. The comparison between experimental and FEM results in terms of force versus time data was evaluated. Higher accuracies were observed in Al 7075-T651 alloy (roughly 98%). The 6061-T6 alloy has shown an approximation of about 90%. Discrepancies are explained in terms of the effective plastic strain at fracture.
KW - Cowper–Symonds model
KW - aluminum welds
KW - explicit finite element method
KW - gas metal arc welding
KW - instrumented impact Charpy tests
UR - http://www.scopus.com/inward/record.url?scp=85109122269&partnerID=8YFLogxK
U2 - 10.1111/ffe.13482
DO - 10.1111/ffe.13482
M3 - Artículo
AN - SCOPUS:85109122269
SN - 8756-758X
VL - 44
SP - 2119
EP - 2134
JO - Fatigue and Fracture of Engineering Materials and Structures
JF - Fatigue and Fracture of Engineering Materials and Structures
IS - 8
ER -