Article
Engineering, Mechanical
Zhen Wang, Dayou Ma, Tao Suo, Yulong Li, Andrea Manes
Summary: This paper compares three numerical approaches for modeling brittle materials under different loading conditions, calibrates parameters through material tests, and evaluates numerical models using experimental results.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Minh-Quy Le
Summary: In this study, a simple method is proposed to compute stress intensity factors using the nodal tensile stresses revealed by peridynamics with the virial theorem, to analyze fracture parameters. The method is validated for mode I fracture of single edge- and center-cracked plates with a wide range of initial crack length-plate width ratios from 0.1 to 0.5. Crack opening displacement and delta-convergence are also investigated. Results are discussed with analytical and finite element methods.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Senad Razanica, Lennart B. Josefson, Ragnar Larsson, Torsten Sjogren
Summary: Fracture modeling and experimental validation of Compacted Graphite Iron (CGI) specimens loaded under quasi-static conditions at room temperature are considered. Continuum damage mechanics coupled to plasticity is adopted to describe the evolution of damage. It is shown from the testing and the simulations that plastic strains generally need to be accounted for in order to properly describe the different failure processes of the CGI specimens.
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2021)
Article
Engineering, Multidisciplinary
Han Wang, Liwei Wu, Junbin Guo, Chuanqiang Yu, Yayun Li, Yichang Wu
Summary: In this work, a general three-dimensional anisotropic model is proposed within the non-ordinary state-based peridynamic framework. The effectiveness and applicability of the proposed model are verified by precisely characterizing the quasi-static deformation and dynamic failure behavior.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Mechanics
Bing Chen, Tiantang Yu, Sundararajan Natarajan, Qing Zhang, Tinh Quoc Bui
Summary: This paper presents a hybrid computational strategy and implementation for simulating crack propagation in 3D solids. The approach combines extended finite element method (XFEM) with bond-based peridynamics (PD) to leverage the efficiency of XFEM and the flexibility of PD in dealing with crack growth. The integrated method allows cracks to grow naturally without fracture criteria and removes surface effects typical of nonlocal methods. The accuracy and performance of the method are demonstrated through numerical examples of dynamic and quasi-static crack propagation.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Mechanics
Bing Chen, Tiantang Yu, Sundararajan Natarajan, Qing Zhang, Tinh Quoc Bui
Summary: This paper presents a novel framework that combines state-based peridynamics (SBPD) with the extended finite element method (XFEM) for crack propagation in two-dimensional solids. Numerical examination is conducted under both quasi-static and time-dependent loading conditions. The framework avoids the requirement of a priori knowledge of enrichment functions, does not need fracture criteria for crack propagation, and has no restriction on the value of Poisson's ratio. It also demonstrates higher computational efficiency compared to pure peridynamics through benchmark examples.
Article
Materials Science, Multidisciplinary
K. Uenishi, K. Nagasawa
Summary: The study investigates the fracture evolution in a brittle material with preexisting cracks and its possible relation with wave motion. The results show that the inclination angle, length, and distribution pattern of cracks significantly influence the fracture behavior. Impact-induced waves can induce fracture in both prograde and retrograde directions.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Isabella Mendoza, Daniel Drury, Andrew Matejunas, Jacob Ivy, Stylianos Koumlis, Peter Jewell, Geoff Brennecka, Leslie Lamberson
Summary: The study found that under dynamic conditions, poled samples exhibited a 70% greater fracture toughness compared to de-poled specimens, with the critical stress intensity factor increasing seven to tenfold. Impulsively loaded samples showed higher fracture toughness, likely due to microcracking and potentially phase transformations at the crack tip. The increase in fracture toughness from poling is likely due to dynamic domain reorientation providing crack tip shielding.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Construction & Building Technology
Nathan J. Edwards, Youli Lin, Hongjian Du, Dong Ruan
Summary: This study investigated the effect of graphene oxide (GO) on the static and dynamic mechanical properties and microstructure of cement mortar. Testing was done at strain rates up to approximately 290 s-1 using a split Hopkinson pressure bar apparatus. The addition of 0.005 and 0.01 wt% GO led to significant improvement in the strength of cement composites, especially at higher strain rates. The findings highlight the great potential of GO for improving the performance of cement composites under high strain rate loading.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Mechanical
Ming-Jyun Dai, Satoyuki Tanaka, Selda Oterkus, Erkan Oterkus
Summary: The newly developed PD shell model is used to evaluate SIFs under in-plane loading based on the ordinary state-based peridynamic theory. The approach employs peridynamic differential operator to obtain strain and stress components, uses domain form of interaction integral for mixed-mode SIFs evaluation, and adapts dynamic relaxation technique for steady-state solutions. Various numerical examples are considered and compared with reference results to demonstrate accuracy and effectiveness. The study aims to examine PD shell model performance in linear elastic fracture mechanics and provides an effective approach for SIFs evaluation.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Mechanics
Gwanghyun Jo, Youn Doh Ha
Summary: In this paper, we introduce a two-grid based sequential analysis algorithm for implicit peridynamics to find quasi-static solutions for crack propagation problems. The algorithm is capable of studying quasi-static fracturing of brittle materials and enhances computational efficiency by using a coarse grid to find the equilibrium path and properly prolongating the converged solution to a fine grid.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Multidisciplinary
Qi Zhang, Nhon Nguyen-Thanh, Weidong Li, A-Man Zhang, Shaofan Li, Kun Zhou
Summary: A coupling approach of the isogeometric-meshfree method and the peridynamic method is developed for static and dynamic crack propagation. The approach allows for flexible modeling of cracks while maintaining exact geometry representation. By using the balanced force principle, the isogeometric-meshfree nodes are directly coupled with peridynamic points, effectively eliminating surface effects and enforcing boundary conditions. The coupling approach achieves adaptive coupling with the same convergence rate as the isogeometric-meshfree method and is extended to crack problems with contact loading.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Fei Han, Zhibin Li
Summary: In this paper, a peridynamics-based finite element method (PeriFEM) is proposed for quasi-static fracture analysis. The proposed method is consistent with the classical finite element method (FEM) and includes the reconstruction of the integral domain, definition of peridynamic elements (PEs), spatial discretization based on PEs and continuous elements (CEs), establishment of linear equations for nodal displacement, and characterization of cracks as degradation of PEs. The validity of the method is demonstrated through numerical examples.
ACTA MECHANICA SOLIDA SINICA
(2022)
Article
Mechanics
Qipeng Ma, Dan Huang, Liwei Wu, Ding Chen
Summary: In this paper, the authors developed an improved peridynamic model to simulate the bond-slip behavior between ribbed steel rebar and concrete. They introduced an interfacial force term to capture the interaction between rebar and concrete, taking into account chemical bonding force, friction, and mechanical bite force. They also proposed a size-dependent non-uniform discretization algorithm to reduce computational cost. The model and approach were validated by accurately capturing crack initiation, propagation, and deformation during the pull-out process, as well as predicting fracture characteristics and force-displacement curves in dynamic fracture and impact failure of reinforced concrete.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Chemistry, Physical
Zbigniew Stropek, Krzysztof Golacki
Summary: Compression tests on cylindrical apple samples revealed that the firmness of apple flesh affects mechanical response under both quasi-static and impact loading conditions; different failure mechanisms were observed depending on the loading conditions; toughness of apple tissue is dependent on firmness, exhibiting different characteristics under different loading conditions.