Results 31 to 40 of about 1,442 (188)

Numerical simulation of fracture propagation in deep coal seam reservoirs

Energy Science & Engineering, 2023
As an unconventional oil and gas resource, coalbed methane has become a key area of unconventional oil and gas exploration worldwide, and hydraulic fracturing is the critical technology for the efficient stimulation of coalbed methane.
Zhongzheng Tian, Zhuang Xiong, Yuhua Wei, Shou Ma, Xiaodong Hu   +4 more
doaj   +1 more source

Quasi-Static Indentation test Analyses of CFRP laminate using quasi three-dimensional XFEM

Nihon Kikai Gakkai ronbunshu, 2021
CFRP laminates subjected to out-of-plane load may have complex damage such as delamination, matrix crack and fiber failure. In this study, damage propagation analyses for Quasi-Static Indentation (QSI) tests were performed by static implicit method using
Chenyu WANG, Toshio NAGASHIMA
doaj   +1 more source

Coupled crystal plasticity-cohesive zone modeling of rock salt viscoplasticity [PDF]

Rock salt, owing to its viscoplastic behavior and structural integrity under high pressure, is a promising candidate for safe and large-scale underground energy storage.
EL AREM, Saber, HABIB, Nour, AMMAR, Amine   +2 more
core   +1 more source

Application of cohesive zone model to large scale circumferential through-wall and 360° surface cracked pipes under static and dynamic loadings

Nuclear Engineering and Technology, 2021
This paper presents ductile fracture simulation of full-scale cracked pipe for nuclear piping materials using the cohesive zone model (CZM). The main objective of this study is to investigate the applicability of CZM to predict ductile fracture of ...
Ji-Hee Moon, Youn-Young Jang, Nam-Su Huh, Do-Jun Shim, Kyoungsoo Park   +4 more
doaj   +1 more source

Numerical Cohesive Zone Modeling (CZM) of Self-Anchoring AM Metal-CFRP joints

Frattura ed Integrità Strutturale
The escalating importance of lightweight design in engineering demands innovative strategies to tackle this challenge. Traditionally, the joining of these materials involves rivets, bolts, or adhesives. However, contemporary manufacturing techniques, such as 3D printing, present the potential to fabricate joints without the necessity for additional ...
Altunok, Fikret Enes, De Pasquale, Giorgio   +1 more
openaire   +3 more sources

Comparative Analysis of Phase-Field and Intrinsic Cohesive Zone Models for Fracture Simulations in Multiphase Materials with Interfaces: Investigation of the Influence of the Microstructure on the Fracture Properties

Applied Sciences
This study evaluates four widely used fracture simulation methods, comparing their computational expenses and implementation complexities within the finite element (FE) framework when employed on heterogeneous solids.
Rasoul Najafi Koopas, Shahed Rezaei, Natalie Rauter, Richard Ostwald, Rolf Lammering   +4 more
doaj   +1 more source

Crack Propagation of SS304/BNi-2 Brazed Joints: Experiments and Numerical Simulations

Metals, 2019
The strength of brazed joints is of great significance for plate-fin heat exchangers. Although a lot of research on the strength of brazed joints has been carried out, few studies have focused on the whole process of the crack propagation of brazed ...
Fan Zhou, Wenchun Jiang, Juni Tan, Jingzhen Shi, and Daikun Yang   +4 more
doaj   +1 more source

A Cohesive Zone Model for Three-dimensional Fatigue Debonding/Delamination

, 2014
The cohesive zone model (CZM) has found a wide acceptance as a tool for the simulation of delamination in composites and debonding in bonded joints. Recently, fatigue-devoted implementations of CZM have been proposed.
Giuliese, G., GIULIESE, Gregorio, MORONI, Fabrizio, Moroni, F., PIRONDI, Alessandro, Pirondi, A.   +5 more
core   +1 more source

A new cohesive-based modelling of moisture-dependent mode II delamination of carbon/epoxy composites

Journal of Materials Research and Technology
The cohesive zone model (CZM) is widely employed for simulating delamination and debonding behaviour in engineering structures. However, the choice of CZM shape impacts the accuracy of simulation results.
M.N. Mohd Fua'ad, K.J. Wong, H.A. Israr, T. Dickhut, S.S. R. Koloor   +4 more
doaj   +1 more source

Numerical investigation on the stress corrosion cracking of FV520B based on the cohesive zone model

Results in Physics, 2019
Tensile failure process of plane specimens and unilateral V-notched specimens is simulated basing on cohesive zone model (CZM). The internal stress in corrosion scales and film-induced stress in matrix increases with the increase of corrosion scale ...
Longhao Xiang, Xuesong Wei, Songying Chen   +2 more
doaj   +1 more source