Results 1 to 10 of about 148 (82)
Numerical simulation of creep notched bar of P91 steel
Fracture and Structural Integrity, 2022 Numerous components designed for use at elevated temperatures now exhibit multiaxial stress states as a result of geometric modification and material inhomogeneity. It is necessary to anticipate the creep rupture life of such components when subjected to
N. Ab Razak, C. M. Davies
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The viscoplastic constitutive model of TC4 alloy under high temperature
Xibei Gongye Daxue Xuebao, 2023 TC4 alloy is widely used in the high temperature environment. This paper proposed an ununified viscoplastic constitutive model according to the uniaxial creep experiment and high temperature tensile experiment of TC4 alloy.
HE Yuxin, MA Yu'e
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Metals, 2022 In this paper, a constitutive model, based on the creep deformation mechanism in P91 steel, under a wide range of stress levels, was established and embedded into finite element software.
Jingwei Zhang +4 more
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Study on creep damage and crack growth for TC11 under complex stress loading
Xibei Gongye Daxue Xuebao, 2021 In order to investigate the creep damage and creep crack growth of TC11, we established the finite element model based on ductility exhaustion constitutive model.
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Nuclear Engineering and Technology, 2016 This paper presents a numerical method to simulate ductile tearing in cracked components under high strain rates using finite element damage analysis. The strain rate dependence on tensile properties and multiaxial fracture strain is characterized by the
Hyun-Suk Nam +4 more
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IOP Conference Series: Materials Science and Engineering, 2019 Abstract To accurately predict the creep rupture time of notched bar becomes a challenge to academia and structural engineer due to complex stress-strain distribution around the notch throat. This paper presents a Finite Element (FE) simulation employing ductility exhaustion based damage model to predict creep rupture time of multiaxial ...
N A Alang, N Ab Razak
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Creep-fatigue life evaluation of Sn-3.5Ag lead-free solder at low temperatures
Mechanical Engineering Journal, 2016 This paper describes creep-fatigue lives of Sn-3.5Ag lead-free solder at low temperatures. Since solders have lower melting temperature and electronic devices are often used at low temperature environment, it is effective for improving the fatigue life ...
Noritake HIYOSHI
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Effects of Inner Defects on Creep Damage and Crack Initiation for a Brazed Joint
High Temperature Materials and Processes, 2018 In the brazing process, some brazing defects like semicircular or straight type are generated due to incomplete filling. In this paper, the creep damage and creep crack initiation (CCI) time of Hastelloy C276-BNi2 brazed joint with defects are ...
Luo Yun +5 more
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Jixie qiangduThe specimen structure with embedded cracks served at elevated temperature was studied. The constraint effect and creep crack initiation time were analysed using the ductility exhaustion approach by 3D finite element method. The results revealed that the
LI YuPeng +5 more
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, 2006 The aim of this thesis is to propose a robust modelling for ductile materials allowing the performance of numerical simulations up to failure without mesh dependency. The approach relies on model with bounded rate variable (time localization limiter) : failure is considered as a high dynamic phenomenon and models with bounded rate aim at controlling ...
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