The viscoelastic damage evolution at the microscale particle interfaces of asphalt mortar or mixtures fundamentally determines the material's fatigue crack growth and failure at the macroscale. However, existing microscale damage models are often based on empirical assumptions that depend on interparticle stresses or forces, which are inaccurate or even incorrect for viscoelastic asphalt materials. In these materials, interfacial crack growth is governed by the viscoelastic energy release rate. To address the limitations of current models, a microscale viscoelastic fatigue damage model was developed using a pseudo J-integral-based Paris’ law and implemented in a discrete element model of asphalt mortar using the PFC2D program. The viscoelastic constitutive behavior was represented by a generalized Maxwell model, and the relaxation moduli were determined through a uniaxial compressive dynamic modulus test. The Paris’ law coefficients were calibrated by comparing model predictions with experimental results from indirect tensile fatigue tests of the material. The results show that the simulated fatigue life and crack area closely match laboratory test data, with an error margin within 15%. During the simulation of microscopic IDT fatigue damage, cracks hinder the horizontal transfer of forces within the cracked region, leading to stress concentrations in surrounding particles and a marked increase in their relative displacement. The connection of upper and lower cracks significantly reduces the specimen's load-bearing capacity. The variation in the number of contact breaks with fatigue load cycles is unaffected by the type of asphalt but is influenced by the applied stress level. These findings demonstrate that the pseudo J-integral-based Paris’ law, when applied at particle interfaces, can effectively model crack growth at the microscale and accurately predict the fatigue damage performance of viscoelastic asphalt materials at the macroscale.
{"title":"Microscale modeling of fatigue crack growth at particle interfaces in viscoelastic asphalt materials","authors":"Li’an Shen, Juntao Wang, Chonghui Wang, Xue Luo, Yuqing Zhang","doi":"10.1177/10567895251358293","DOIUrl":"https://doi.org/10.1177/10567895251358293","url":null,"abstract":"The viscoelastic damage evolution at the microscale particle interfaces of asphalt mortar or mixtures fundamentally determines the material's fatigue crack growth and failure at the macroscale. However, existing microscale damage models are often based on empirical assumptions that depend on interparticle stresses or forces, which are inaccurate or even incorrect for viscoelastic asphalt materials. In these materials, interfacial crack growth is governed by the viscoelastic energy release rate. To address the limitations of current models, a microscale viscoelastic fatigue damage model was developed using a pseudo J-integral-based Paris’ law and implemented in a discrete element model of asphalt mortar using the PFC2D program. The viscoelastic constitutive behavior was represented by a generalized Maxwell model, and the relaxation moduli were determined through a uniaxial compressive dynamic modulus test. The Paris’ law coefficients were calibrated by comparing model predictions with experimental results from indirect tensile fatigue tests of the material. The results show that the simulated fatigue life and crack area closely match laboratory test data, with an error margin within 15%. During the simulation of microscopic IDT fatigue damage, cracks hinder the horizontal transfer of forces within the cracked region, leading to stress concentrations in surrounding particles and a marked increase in their relative displacement. The connection of upper and lower cracks significantly reduces the specimen's load-bearing capacity. The variation in the number of contact breaks with fatigue load cycles is unaffected by the type of asphalt but is influenced by the applied stress level. These findings demonstrate that the pseudo J-integral-based Paris’ law, when applied at particle interfaces, can effectively model crack growth at the microscale and accurately predict the fatigue damage performance of viscoelastic asphalt materials at the macroscale.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"280 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144629839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-07-14DOI: 10.1177/10567895251357958
Jun Xu, Lu Ma, Xiaochun Xiao
To clarify the damage evolution of rock-like materials with defects under cyclic loading, gypsum specimens containing prefabricated nonpenetrating crack(s) are employed to undertake a quantitative study of the energy in the failure process of brittle materials under cyclic loading. The results show that under cyclic loading, the laws of energy accumulation, transformation, and release can effectively reflect the damage evolution process of rock-like materials. In the damage process of gypsum specimen, the number of nonpenetrating cracks can influence the elastic energy density, the total energy density, and dissipated energy density. The surface free energy of new cracks tends to increase to a certain extent as the number of cycles increases. Additionally, the expressions for the total energy, stored energy, dissipated energy, and damage of the gypsum specimen under cyclic loading are derived and tested through the experimental results. A quantitative analysis and calculation of the crack surface energy have also been conducted, along with an estimation and analysis of the microcrack surface free energy. These findings are of great significance for understanding the mechanisms of rock failure and rock engineering disasters in deep rock engineering, such as spalling, collapse, and rock burst, from the perspective of energy accumulation, transformation, and release.
{"title":"Energy characteristics of rocks prior to macroscopic fracture under cyclic loading","authors":"Jun Xu, Lu Ma, Xiaochun Xiao","doi":"10.1177/10567895251357958","DOIUrl":"https://doi.org/10.1177/10567895251357958","url":null,"abstract":"To clarify the damage evolution of rock-like materials with defects under cyclic loading, gypsum specimens containing prefabricated nonpenetrating crack(s) are employed to undertake a quantitative study of the energy in the failure process of brittle materials under cyclic loading. The results show that under cyclic loading, the laws of energy accumulation, transformation, and release can effectively reflect the damage evolution process of rock-like materials. In the damage process of gypsum specimen, the number of nonpenetrating cracks can influence the elastic energy density, the total energy density, and dissipated energy density. The surface free energy of new cracks tends to increase to a certain extent as the number of cycles increases. Additionally, the expressions for the total energy, stored energy, dissipated energy, and damage of the gypsum specimen under cyclic loading are derived and tested through the experimental results. A quantitative analysis and calculation of the crack surface energy have also been conducted, along with an estimation and analysis of the microcrack surface free energy. These findings are of great significance for understanding the mechanisms of rock failure and rock engineering disasters in deep rock engineering, such as spalling, collapse, and rock burst, from the perspective of energy accumulation, transformation, and release.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"13 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144622487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-23DOI: 10.1177/10567895251338005
Yao Zhang, Pan Feng, Weigang Zhao, Guowen Sun, Zhiguo Yan, Hehua Zhu, J. Woody Ju
Multiscale fiber-reinforced ultra-high performance concrete (MSFUHPC) was recently developed to obtain the desired thermal and mechanical properties for engineering structures suffering from fire accidents. Quantitative methods to characterize the evolution of its thermal damage are necessary to design MSFUHPC and remain to be presented. This study presents an improved micromechanical model focusing on the material's stiffness from hydration through dehydration to thermal damage. MSFUHPC is renowned for its exceptional mechanical properties and durability; however, its susceptibility to thermal degradation poses significant challenges, particularly in fire scenarios. The integration of multiscale fibers—comprising steel, polyethylene, and carbon fibers and carbon nanotubes—alongside lightweight aggregates such as fly ash cenospheres, enhances the material's performance subjected to elevated temperatures. The proposed micromechanical model captures the complex interactions between the fibers, sand and cement matrix at various scales. By considering the effects of hydration and dehydration, the model offers valuable insights into the mechanisms leading to thermal damage during thermal exposure. Moreover, two Weibull probabilistic models are introduced to characterize the evolution of thermal cracking and sand debonding. Experimental studies are carried out to estimate the thermal and mechanical properties of MSFUHPC, thereby validating the model's feasibility. The results indicate that the multiscale fiber reinforcement significantly mitigates thermal damage. These findings underscore the importance of optimizing fiber and aggregate combinations to achieve superior fire resistance. Moreover, the proposed micromechanical model can serve as input parameters for thermomechanically coupled analysis of structures and components.
{"title":"An improved micromechanical model for multiscale fiber reinforced ultra-high performance concrete: From hydration, dehydration to thermal damage","authors":"Yao Zhang, Pan Feng, Weigang Zhao, Guowen Sun, Zhiguo Yan, Hehua Zhu, J. Woody Ju","doi":"10.1177/10567895251338005","DOIUrl":"https://doi.org/10.1177/10567895251338005","url":null,"abstract":"Multiscale fiber-reinforced ultra-high performance concrete (MSFUHPC) was recently developed to obtain the desired thermal and mechanical properties for engineering structures suffering from fire accidents. Quantitative methods to characterize the evolution of its thermal damage are necessary to design MSFUHPC and remain to be presented. This study presents an improved micromechanical model focusing on the material's stiffness from hydration through dehydration to thermal damage. MSFUHPC is renowned for its exceptional mechanical properties and durability; however, its susceptibility to thermal degradation poses significant challenges, particularly in fire scenarios. The integration of multiscale fibers—comprising steel, polyethylene, and carbon fibers and carbon nanotubes—alongside lightweight aggregates such as fly ash cenospheres, enhances the material's performance subjected to elevated temperatures. The proposed micromechanical model captures the complex interactions between the fibers, sand and cement matrix at various scales. By considering the effects of hydration and dehydration, the model offers valuable insights into the mechanisms leading to thermal damage during thermal exposure. Moreover, two Weibull probabilistic models are introduced to characterize the evolution of thermal cracking and sand debonding. Experimental studies are carried out to estimate the thermal and mechanical properties of MSFUHPC, thereby validating the model's feasibility. The results indicate that the multiscale fiber reinforcement significantly mitigates thermal damage. These findings underscore the importance of optimizing fiber and aggregate combinations to achieve superior fire resistance. Moreover, the proposed micromechanical model can serve as input parameters for thermomechanically coupled analysis of structures and components.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"49 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-18DOI: 10.1177/10567895251329702
Peifeng Li, Guoshao Su, Salvatore Martino, Zonghui Liu, Shihong Hu
In deep rock engineering, rocks adjacent to excavation boundaries, subjected to biaxial compression, frequently encounter severe static and dynamic hazards induced by construction activities. These processes generate abundant sound signals associated with rock pre-failures, although the beneficial characteristics of these signals remain inadequately understood. Their potential drives us to comprehensively explore the precursory and damage characteristics of static (spalling) and dynamic (rockburst) failures in granite under biaxial compression with different loading rates using sound signals. Based on the characteristic analysis of sound signals in the time and frequency domains, we identified multiple precursors correlated with the rock failures and introduced a prediction method for determining the rock failure modes (spalling and rockburst). Subsequently, the strong effects of loading rate on the sound precursors were revealed. Moreover, the proposed sound-based damage constitutive model for granite under biaxial compression with different loading rates was proven to be feasible. Furthermore, the amplitude-frequency properties of sound signals produced by rock cracking under biaxial compression were uncovered. The research results of this study improve the prediction and warning of static-dynamic mechanisms driven rock failures under biaxial compression through sound monitoring technology.
{"title":"Precursory and damage characteristics of static and dynamic failures in granite under biaxial compression with different loading rates: Insight from sound signals","authors":"Peifeng Li, Guoshao Su, Salvatore Martino, Zonghui Liu, Shihong Hu","doi":"10.1177/10567895251329702","DOIUrl":"https://doi.org/10.1177/10567895251329702","url":null,"abstract":"In deep rock engineering, rocks adjacent to excavation boundaries, subjected to biaxial compression, frequently encounter severe static and dynamic hazards induced by construction activities. These processes generate abundant sound signals associated with rock pre-failures, although the beneficial characteristics of these signals remain inadequately understood. Their potential drives us to comprehensively explore the precursory and damage characteristics of static (spalling) and dynamic (rockburst) failures in granite under biaxial compression with different loading rates using sound signals. Based on the characteristic analysis of sound signals in the time and frequency domains, we identified multiple precursors correlated with the rock failures and introduced a prediction method for determining the rock failure modes (spalling and rockburst). Subsequently, the strong effects of loading rate on the sound precursors were revealed. Moreover, the proposed sound-based damage constitutive model for granite under biaxial compression with different loading rates was proven to be feasible. Furthermore, the amplitude-frequency properties of sound signals produced by rock cracking under biaxial compression were uncovered. The research results of this study improve the prediction and warning of static-dynamic mechanisms driven rock failures under biaxial compression through sound monitoring technology.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"51 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-16DOI: 10.1177/10567895251346021
Bin Li, Zhiwu Zhu, Wurong Jia, Zhengqiang Cheng, Tao Li
Frozen-soils with different moisture contents (MCs) often experience freeze-thaw cycles (FTCs) owing to fluctuations in seasonal or day-night temperature. The influence of FTC on the impact dynamic mechanical properties of frozen-soils with different MCs was investigated in this study. The impact dynamic compression tests on frozen-soils with different MCs (20%, 25%, and 30%) following varying numbers of FTC (0, 1, 3, 5, and 7) using a split Hopkinson pressure bar apparatus were conducted. The experimental results revealed that the impact dynamic strength of the frozen-soil was related to the number of FTC and MC. A threshold exists for the number of FTC for the frozen-soil. Before reaching this threshold, the impact dynamic strength of the frozen-soil progressively decreased with an increasing number of FTC. Further, the threshold decreased as the MC decreased. Analyzing the energy of frozen-soil during impact process, an expression for the FTC damage in frozen-soils with different MCs was established using the energy density. The reinforcing effect of ice particles on the impact dynamic mechanical properties of frozen-soil was examined, and the elastic constants for the frozen-soils with different MCs were evaluated using micromechanical theory. Furthermore, a finite element numerical model of frozen-soil was developed by integrating cohesive elements into solid elements via Python scripting using the cohesive zone model. The impact dynamic mechanical behavior and crack evolution behavior of frozen-soils with different MCs following varying numbers of FTCs were simulated by considering the mechanisms of FTC degradation and ice particles reinforcement. The validity of the model was confirmed by comparing simulation and experimental results.
{"title":"Impact dynamic mechanical properties of frozen-soils with different moisture contents following varying numbers of freeze-thaw cycle","authors":"Bin Li, Zhiwu Zhu, Wurong Jia, Zhengqiang Cheng, Tao Li","doi":"10.1177/10567895251346021","DOIUrl":"https://doi.org/10.1177/10567895251346021","url":null,"abstract":"Frozen-soils with different moisture contents (MCs) often experience freeze-thaw cycles (FTCs) owing to fluctuations in seasonal or day-night temperature. The influence of FTC on the impact dynamic mechanical properties of frozen-soils with different MCs was investigated in this study. The impact dynamic compression tests on frozen-soils with different MCs (20%, 25%, and 30%) following varying numbers of FTC (0, 1, 3, 5, and 7) using a split Hopkinson pressure bar apparatus were conducted. The experimental results revealed that the impact dynamic strength of the frozen-soil was related to the number of FTC and MC. A threshold exists for the number of FTC for the frozen-soil. Before reaching this threshold, the impact dynamic strength of the frozen-soil progressively decreased with an increasing number of FTC. Further, the threshold decreased as the MC decreased. Analyzing the energy of frozen-soil during impact process, an expression for the FTC damage in frozen-soils with different MCs was established using the energy density. The reinforcing effect of ice particles on the impact dynamic mechanical properties of frozen-soil was examined, and the elastic constants for the frozen-soils with different MCs were evaluated using micromechanical theory. Furthermore, a finite element numerical model of frozen-soil was developed by integrating cohesive elements into solid elements via Python scripting using the cohesive zone model. The impact dynamic mechanical behavior and crack evolution behavior of frozen-soils with different MCs following varying numbers of FTCs were simulated by considering the mechanisms of FTC degradation and ice particles reinforcement. The validity of the model was confirmed by comparing simulation and experimental results.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"25 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-09DOI: 10.1177/10567895251329946
Jiahui Shen, Mário Rui Tiago Arruda, Alfonso Pagani
This paper provides an extensive review of popular regularization methods utilized in numerical models to stabilize the structural response of materials exhibiting significant softening. The necessity for regularization is highlighted in cases of material softening, which is attributed to the loss of ellipticity in the governing differential equations. It discusses the advantages and disadvantages of the regularization methods most commonly employed in the scientific community. Furthermore, the paper highlights recent advancements, particularly in defining internal length within nonlocal models and characteristic element length in fracture energy regularization methods, as alternative solutions to address the limitations inherent in traditional approaches.
{"title":"State of art in regularization methods for numerical analysis of structures with softening","authors":"Jiahui Shen, Mário Rui Tiago Arruda, Alfonso Pagani","doi":"10.1177/10567895251329946","DOIUrl":"https://doi.org/10.1177/10567895251329946","url":null,"abstract":"This paper provides an extensive review of popular regularization methods utilized in numerical models to stabilize the structural response of materials exhibiting significant softening. The necessity for regularization is highlighted in cases of material softening, which is attributed to the loss of ellipticity in the governing differential equations. It discusses the advantages and disadvantages of the regularization methods most commonly employed in the scientific community. Furthermore, the paper highlights recent advancements, particularly in defining internal length within nonlocal models and characteristic element length in fracture energy regularization methods, as alternative solutions to address the limitations inherent in traditional approaches.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"139 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-29DOI: 10.1177/10567895251346275
George Z. Voyiadjis
{"title":"Preface to the special issues of the International Journal of Damage Mechanics","authors":"George Z. Voyiadjis","doi":"10.1177/10567895251346275","DOIUrl":"https://doi.org/10.1177/10567895251346275","url":null,"abstract":"","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"147 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-21DOI: 10.1177/10567895251342399
Mohamed Chairi, Jalal El Bahaoui, Issam Hanafi, Federica Favaloro, Chiara Borsellino, Fabia Galantini, Guido Di Bella
In response to environmental challenges and the demand for sustainability, this study explores a novel engineering structure, harnessing the potential of bio-based materials within the framework of composite sandwich structures. This investigation employs finite element modeling to assess sandwich structures composed of End-grain balsa wood and fiber-reinforced polymer (FRP) facesheets. These facesheets incorporate glass, carbon, and basalt fibers, enabling a direct comparison between conventional and bio-based materials. Mechanical responses are evaluated under numerical flexural loading using Abaqus/Implicit, with a specialized wood material model integrated via a User Material (UMAT) subroutine. A 2D Hashin failure criterion assesses FRP facesheets. Intriguingly, findings indicate minimal influence from FRP on structural performance, while balsa wood and the core-casings interface emerge as decisive factors.
{"title":"Computational assessment of sustainable balsa and basalt composite sandwich for structural marine applications","authors":"Mohamed Chairi, Jalal El Bahaoui, Issam Hanafi, Federica Favaloro, Chiara Borsellino, Fabia Galantini, Guido Di Bella","doi":"10.1177/10567895251342399","DOIUrl":"https://doi.org/10.1177/10567895251342399","url":null,"abstract":"In response to environmental challenges and the demand for sustainability, this study explores a novel engineering structure, harnessing the potential of bio-based materials within the framework of composite sandwich structures. This investigation employs finite element modeling to assess sandwich structures composed of End-grain balsa wood and fiber-reinforced polymer (FRP) facesheets. These facesheets incorporate glass, carbon, and basalt fibers, enabling a direct comparison between conventional and bio-based materials. Mechanical responses are evaluated under numerical flexural loading using Abaqus/Implicit, with a specialized wood material model integrated via a User Material (UMAT) subroutine. A 2D Hashin failure criterion assesses FRP facesheets. Intriguingly, findings indicate minimal influence from FRP on structural performance, while balsa wood and the core-casings interface emerge as decisive factors.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"122 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-14DOI: 10.1177/10567895251329815
Tim van der Velden, Stefanie Reese, Hagen Holthusen, Tim Brepols
This paper establishes a generic framework for the nonlocal modeling of anisotropic damage at finite strains. By the combination of two recent works, the new framework allows for the flexible incorporation of different established hyperelastic finite strain material formulations into anisotropic damage whilst ensuring mesh-independent results by employing a generic set of micromorphic gradient-extensions. First, the anisotropic damage model, generally satisfying the damage growth criterion, is investigated for the specific choice of a neo-Hookean material on a single element. Next, the model is applied with different gradient-extensions in structural simulations of an asymmetrically notched specimen to identify an efficient choice in the form of a volumetric–deviatoric regularization. Thereafter, the generic framework, which is without loss of generality here specified for a neo-Hookean material with a volumetric–deviatoric gradient-extension, successfully serves for the complex simulation of a pressure-loaded rotor blade. The codes of the material subroutines are accessible to the public at https://doi.org/10.5281/zenodo.11171630 .
{"title":"An anisotropic, brittle damage model for finite strains with a generic damage tensor regularization","authors":"Tim van der Velden, Stefanie Reese, Hagen Holthusen, Tim Brepols","doi":"10.1177/10567895251329815","DOIUrl":"https://doi.org/10.1177/10567895251329815","url":null,"abstract":"This paper establishes a generic framework for the nonlocal modeling of anisotropic damage at finite strains. By the combination of two recent works, the new framework allows for the flexible incorporation of different established hyperelastic finite strain material formulations into anisotropic damage whilst ensuring mesh-independent results by employing a generic set of micromorphic gradient-extensions. First, the anisotropic damage model, generally satisfying the damage growth criterion, is investigated for the specific choice of a neo-Hookean material on a single element. Next, the model is applied with different gradient-extensions in structural simulations of an asymmetrically notched specimen to identify an efficient choice in the form of a volumetric–deviatoric regularization. Thereafter, the generic framework, which is without loss of generality here specified for a neo-Hookean material with a volumetric–deviatoric gradient-extension, successfully serves for the complex simulation of a pressure-loaded rotor blade. The codes of the material subroutines are accessible to the public at <jats:ext-link xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"uri\" xlink:href=\"https://doi.org/10.5281/zenodo.11171630\">https://doi.org/10.5281/zenodo.11171630</jats:ext-link> .","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"13 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143980028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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