Results 51 to 60 of about 2,731 (201)

A New Model for Void Coalescence by Internal Necking [PDF]

, 2010
A micromechanical model for predicting the strain increment required to bring a damaged material element from the onset of void coalescence up to final fracture is developed based on simple kinematics arguments.
Onck, P. R., Onck, P.R.,, Onck, P.R., Scheyvaerts, Florence, Pardoen, T., Scheyvaerts, F.,, Pardoen, T.,, Scheyvaerts, F., Pardoen, Thomas   +8 more
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CONSTITUTIVE MODEL AND FAILURE PARAMETERS OF TC4 TITANIUM ALLOY UNDER QUASI-STATIC TENSILE

Jixie qiangdu, 2022
Large deformation and fracture processes of materials are often involved in the finite element simulation of high-speed collision. Based on the Johnson-Cook fracture failure model, TC4 titanium alloy samples with different notch sizes were designed, and ...
FANG XinWen, GUAN JiaJia
doaj  

Ubiquitiformal Fracture Energy under Triaxial Compression Incorporating Stress Triaxiality

Rock Mechanics Letters
Most studies on ubiquitiformal fracture energy focus on tensile loading, whereas rock materials in engineering practice are predominantly subjected to compressive and confining stresses. In this paper, the complexity and the upper and lower bound to scale invariance are introduced into the expression of the fracture parameters, and a theoretical ...
Beibei Yang, Zijian Yan, Yongdong Yang, Xiaogang Ding, Yunxiu Dong   +4 more
openaire   +1 more source

Effect of Stress Triaxiality and Lode Angle on Ductile Fracture

, 2023
Although many ductile damage accumulation studies have been done in recent years, there is still insufficient research towards the development of ductile fracture models, mainly due to the difficulty of performing experiments under different states of ...
Nia, Mahan
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A Plastic Damage Model with Stress Triaxiality-Dependent Hardening for Concrete

, 2014
Emphases of this study were placed on the modelling of plastic damage behaviour of prestressed structural concrete, with special attention being paid to the stress-triaxiality dependent plastic hardening law and the corresponding damage evolution law.
X.C. Wang, X.P. Shen
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Stress triaxiality and failure in SFRPs: a novel workflow for failure curve determination, considering fibre orientation and specimen geometry

Polymer Testing
This research investigates the static failure behaviour of a PA6T/6I GF50, focusing on the distribution of the stress triaxiality at critical points where failure is expected.
F.E. Fiorini, A. Canegrati, L.M. Martulli, P. Steck, A. Bernasconi   +4 more
doaj   +1 more source

Numerical simulation of low stress triaxiality ductile fracture

, 2006
One of the main shortcoming of existing damage models when applied to the simulation of metal forming operations is their limited validity under low stress triaxiality conditions.
Pardoen, Thomas
core   +1 more source

A Fracture Criterion for Prediction of Fracture Initiation of Metal Materials at Various Stress States for Nuclear Waste Storage

Science and Technology of Nuclear Installations, 2019
A fracture criterion is newly proposed to evaluate fracture behavior and predict fracture initiation of metal materials in different complicated stress states for four different fracture mechanisms including quasicleavage fracture, normal fracture with ...
Zhihui Li, Xue Yang, Anmin Tang
doaj   +1 more source

The Effects of Stress Triaxiality on the Neck Initiation and Fracture of High-density Polyethylene (HDPE)

, 2022
This study analyses the tensile mechanical behaviour and deformation of neck i.e localization initiation, propagation and fracture of injection-moulded polymer composed of high-density polyethylene (HDPE) as a function of initial stress triaxiality ...
Islam, Md. Shafiqul,, Andreasson, Eskil,, Powar, Pratik Rajesh, Viktor Petersson, Andreasson, Eskil, Md Shafiqul Islam, Islam, Md. Shafiqul, Petersson, Viktor, Powar, Pratik Rajesh,, Pratik Rajesh Powar, Eskil Andreasson, Petersson, Viktor,   +11 more
core   +1 more source

Influence of stress triaxiality on fracture ductility for stereo lithography

, 2018
Stress triaxiality is one of the most important factors that controls fracture ductility. The objective of this study was to investigate the influence of stress triaxiality on fracture ductility for specimens’ printed using stereolithography (SL).
Yellavajjala, Ravi Kiran, Sandip, Anjali
core