Results 31 to 40 of about 1,443 (188)

Push Plate Test of CRTS II Slab Ballastless Track: Theoretical Analysis, Experiments, and Numerical Simulation

open access: yesShock and Vibration, 2021
Push plate test is a powerful tool to evaluate the interfacial bond performance of China railway track structure type-II slab ballastless track structure (CRTS II SBTS). However, there is still a lack of theoretical explanation of the push plate test. In
Yu Liu   +4 more
doaj   +1 more source

Implicit DEM analyses of size and shape effects on crushing strength of rockfill particles

open access: yesYantu gongcheng xuebao, 2023
An implicit version of discrete element method (DEM) called non-smooth contact dynamics (NSCD) is used to simulate the crushing process of single rockfill particle under one-dimensional (1D) compression.
HU Shenjiang 1, 2, GUO Ning 1, 2, YANG Zhongxuan 1, 2, ZHAO Jidong 3
doaj   +1 more source

Effect of fracture energy estimation on the predictions of mode II behavior of bonded joints using cohesive zone models

open access: yesFracture and Structural Integrity
Fracture behavior of adhesive joints is an important topic in structural design of new structural elements or in retrofitting of existing ones. The mechanical models available in literature capable of predicting the failure mode of these junctions are ...
Michele Perrella   +3 more
doaj   +3 more sources

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

open access: yes
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   +2 more
core   +1 more source

Numerical simulation of fracture propagation in deep coal seam reservoirs

open access: yesEnergy 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   +4 more
doaj   +1 more source

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

open access: yesNihon 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

Investigation of Cohesive Zone Model Parameters for Steel Used in Shipbuilding Structure [PDF]

open access: yes, 2017
Present work deals with the investigation of fracture toughness and modeling parameters need in FEA application for steel use in shipbuilding structure. The investigated steel was 12.5mm thick low carbon high strength steel.
Swadesh Dixit   +4 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

open access: yesNuclear 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   +4 more
doaj   +1 more source

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

open access: yesFrattura 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   +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

open access: yesApplied 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   +4 more
doaj   +1 more source

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