International Journal of Damage Mechanics最新文献_第7页

Cracking analysis of fcc reactor structural metals based on a phenomenological constitutive model 基于现象学本构模型的催化裂化反应器结构金属开裂分析

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-07-02 DOI: 10.1177/10567895261466469

Yingxuan Dong, Qun Li

{"title":"Cracking analysis of fcc reactor structural metals based on a phenomenological constitutive model","authors":"Yingxuan Dong, Qun Li","doi":"10.1177/10567895261466469","DOIUrl":"https://doi.org/10.1177/10567895261466469","url":null,"abstract":"The irradiation effect on the fracture toughness and the energy release rate in metallic materials leads to typical cracking behaviors in structural components of reactors. In this paper, the fracture toughness degradation mechanism and cracking behavior in irradiated face-centered cubic (fcc) metals are numerically analyzed using a newly developed phenomenological constitutive model. By characterizing the irradiation-induced plastic flow behavior through variations in the hardening modulus and taking into account the neutron-irradiation strain subjected to irradiation doses, a phenomenological constitutive model for irradiated fcc metals is constructed based on the framework of incremental plasticity theory. The constitutive model is validated as universally applicable over a wide irradiation range by comparing simulation results with experimental data. Furthermore, using the presented constitutive model, cracking simulations are conducted under various irradiation conditions. The numerical results show that the plastic zone near the crack tip decreases nonlinearly as the irradiation extent increases. Irradiation-induced degradation of fracture toughness is thoroughly interpreted through the influence mechanism of irradiation dose on the plastic zone near the crack tip. In addition, the irradiation effect on cracking is quantitatively analyzed by calculating the J -integral at the crack tip. The energy release rate during crack propagation increases logarithmically with increasing irradiation doses, indicating that irradiation accelerates cracking in fcc metals. As an application example, the presented constitutive model is utilized to estimate the onset condition for crack propagation in the fcc metal matrix. This study lays a foundation for investigating irradiation resistance performance and evaluating the failure of structural components in reactors.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"364 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148365222","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}

引用次数: 0

MXene-reinforced Elium ® composites: A comprehensive study on tensile and flexural strengths, fracture toughness, thermal properties and damage mechanisms mxene增强Elium®复合材料：拉伸和弯曲强度，断裂韧性，热性能和损伤机制的综合研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-29 DOI: 10.1177/10567895261465215

Bayram Ünal, Yasin Uslugil, Hasan Ulus, Mürsel Ekrem, Hayrettin Düzcükoğlu

{"title":"MXene-reinforced Elium ® composites: A comprehensive study on tensile and flexural strengths, fracture toughness, thermal properties and damage mechanisms","authors":"Bayram Ünal, Yasin Uslugil, Hasan Ulus, Mürsel Ekrem, Hayrettin Düzcükoğlu","doi":"10.1177/10567895261465215","DOIUrl":"https://doi.org/10.1177/10567895261465215","url":null,"abstract":"This study reports the synthesis of multilayer Ti 3 C 2 T x MXene through selective etching of Ti 3 AlC 2 and its incorporation into Elium ® thermoplastic resin at loadings of 0.25–1.0 wt.%. The resulting nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction, thermogravimetric analysis/differential scanning calorimetry, and mechanical tests, including tensile (ASTM D638), flexural (ASTM D790), and fracture toughness (ASTM D5045) analyses. The 0.75 wt.% MXene composite exhibited the most balanced performance, achieving a tensile strength of 69.45 MPa, a flexural strength of 110 MPa, and a 31% improvement in fracture toughness over neat Elium ® . These enhancements were attributed to uniform nanofiller dispersion and effective interfacial interaction that facilitates stress transfer and crack deflection. SEM fractography revealed a transition from smooth, brittle fracture surfaces in the neat matrix to rough, branched crack paths in the MXene-filled composites, indicating improved energy dissipation. Overall, MXene/Elium ® nanocomposites showed superior strength, toughness, and thermal stability, highlighting their potential as lightweight and recyclable materials for structural applications in automotive, aerospace, and protective sectors.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"72 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148342252","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}

引用次数: 0

Fatigue short-crack growth mechanism and multi-scale rate modeling under multi-condition loading 多工况载荷下疲劳短裂纹扩展机理及多尺度速率建模

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-29 DOI: 10.1177/10567895261464427

Xinyu Ge, Chao Zhang, Kexi Xu, Ximing Zhang, Wentao Zhao, Tongtong Liu

{"title":"Fatigue short-crack growth mechanism and multi-scale rate modeling under multi-condition loading","authors":"Xinyu Ge, Chao Zhang, Kexi Xu, Ximing Zhang, Wentao Zhao, Tongtong Liu","doi":"10.1177/10567895261464427","DOIUrl":"https://doi.org/10.1177/10567895261464427","url":null,"abstract":"Short fatigue crack growth is strongly affected by microstructural heterogeneity, crack-size effects, and loading-path dependence, leading to nonlinear, intermittent, and locally sensitive propagation behavior. Conventional long-crack growth models based on linear elastic fracture mechanics are therefore insufficient for describing short-crack propagation under different loading conditions. To address this issue, this study proposes a multi-scale short fatigue crack growth rate model that couples crack-tip strain energy density, crack-size effect, microstructural barrier resistance, and crack closure correction. Compared with the existing short-crack models, the proposed model introduces a microstructural barrier penetration function and a crack-opening correction factor to describe crack arrest, re-initiation, growth-rate fluctuation, and the effective crack-driving force. The model is validated using literature-reported experimental datasets for LZ50 steel, EA4T steel, CuNi 2 Si alloy, and 42CrMo steel under different load sequences, loading frequencies, loading paths, loading modes, and load levels. The results show that the proposed model can reasonably capture the nonlinear evolution of short-crack growth rates under multi-condition loading. Quantitative evaluation shows an average log-scale coefficient of determination of 0.894, with 96.1% of the evaluated data points falling within the factor-of-three error band. These results indicate that the proposed model provides a physically interpretable framework for short fatigue crack growth assessment. Further validation under random or spectrum loading is still required.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"436 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148342268","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}

引用次数: 0

Seismic damage assessment for concrete bridge columns using maximum and residual displacement data synthesized via generative AI 基于生成式人工智能合成的最大位移和剩余位移数据的混凝土桥柱震害评估

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-17 DOI: 10.1177/10567895261460981

Junzhi Liao, Jason Fang, Lizhi Sun

{"title":"Seismic damage assessment for concrete bridge columns using maximum and residual displacement data synthesized via generative AI","authors":"Junzhi Liao, Jason Fang, Lizhi Sun","doi":"10.1177/10567895261460981","DOIUrl":"https://doi.org/10.1177/10567895261460981","url":null,"abstract":"Seismic damage index for concrete bridges often quantifies only peak deformation and neglects residual response, which reflects cumulative damage and governs postearthquake recovery. Meanwhile, their use in risk-based fragility assessments renders the results highly sensitive to data scarcity, particularly for rare high-damage states under extreme earthquakes. This study develops an integrated probabilistic framework that couples damage quantification with data augmentation. A new damage index is proposed to combine maximum and residual displacements into a single interpretable measure. Optimized limit states are calibrated accordingly. To address data scarcity, a fragility-informed conditional generative adversarial network (cGAN) is introduced. The model incorporates adversarial, physics-based, and fragility-based losses to generate realistic combinations of intensity measures and engineering demand parameters for calibration and uncertainty quantification. By enriching the dataset with cGAN-generated samples, the method produces fragility curves with reduced dispersion and improved reliability in severe-damage regimes for the bridge demonstration. The integration of enhanced damage index and statistically consistent data augmentation offers a robust basis for seismic performance evaluation and supports informed decisions on inspection, repair, retrofit, and resilience planning.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"34 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288556","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}

引用次数: 0

Study on the failure mechanism of surrounding rock in upper and lower parallel tunnels regulated by horizontal spacing and joint dip angle 水平间距和节理倾角调节上下平行巷道围岩破坏机理研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-15 DOI: 10.1177/10567895261456905

Fei Wang, Yufeng Cheng, Peng Zhang, Chuanqi Zhu, Shicheng Wei, Cancan Chen

{"title":"Study on the failure mechanism of surrounding rock in upper and lower parallel tunnels regulated by horizontal spacing and joint dip angle","authors":"Fei Wang, Yufeng Cheng, Peng Zhang, Chuanqi Zhu, Shicheng Wei, Cancan Chen","doi":"10.1177/10567895261456905","DOIUrl":"https://doi.org/10.1177/10567895261456905","url":null,"abstract":"Horizontal spacing between twin parallel tunnels and surrounding rock joint dip angle are critical to tunnel stability. To clarify the underlying mechanisms, uniaxial compression tests were conducted on rock-like specimens with parallel holes (spacing: 0, 20, 40, and 60 mm) and prefabricated joints (dip angle: 0°, 30°, 45°, 60°, and 90°), with acoustic emission (AE) and digital image correlation (DIC) employed to monitor crack propagation and full-field strain evolution. Results show horizontal spacing affects specimen strength by regulating inter-hole stress superposition, with peak stress showing a nonmonotonic trend of first rising then falling and 20 to 40 mm spacing optimizing stress distribution to enhance load-bearing stability; joint dip angle dominates failure modes via crack propagation paths, as a 45° dip induces the strongest compression-shear coupling to maximize bearing capacity and increase mixed-mode cracks while shear cracks prevail at other angles. A boundary line with a slope of 100 enables quantitative distinction between different crack types, thus confirming the dynamic influence of these two parameters (horizontal spacing and joint dip angle) on crack modes. Additionally, numerical simulations conducted via COMSOL Multiphysics confirmed the existence of a “low-stress bridge” effect between the two parallel holes and elucidated the compression-shear coupling mechanism along the joint surface.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"43 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288595","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}

引用次数: 0

Damage mitigation and maintenance enhancement of rock ballast: A novel tamping method 一种新的夯实方法：减轻岩石压载物的损伤并增强其维护能力

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-15 DOI: 10.1177/10567895261460588

Yuze Wang, Shunwei Shi, Jiangwei Xue, Yue Liu, Liang Gao

引用次数: 0

Anisotropic fatigue life prediction of laser powder bed fusion Ti6Al4V alloy based on continuous damage model 基于连续损伤模型的激光粉末床熔合Ti6Al4V合金各向异性疲劳寿命预测

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-15 DOI: 10.1177/10567895261459757

Yang Yi, Xiang Xu, Yanan Hu, Xuejun Deng, Yuxuan Liu, Junlou Li, Qianhua Kan, Guozheng Kang

{"title":"Anisotropic fatigue life prediction of laser powder bed fusion Ti6Al4V alloy based on continuous damage model","authors":"Yang Yi, Xiang Xu, Yanan Hu, Xuejun Deng, Yuxuan Liu, Junlou Li, Qianhua Kan, Guozheng Kang","doi":"10.1177/10567895261459757","DOIUrl":"https://doi.org/10.1177/10567895261459757","url":null,"abstract":"This study presents an anisotropic fatigue life prediction model for Ti6Al4V alloy fabricated by laser powder bed fusion along different build orientations, explicitly considering ratchetting–fatigue interaction within the framework of ductility exhaustion theory and continuum damage mechanics. The total damage is decomposed into fatigue damage and ratchetting-induced ductility damage. Within the framework of Lemaitre's continuum damage mechanics, combined with the cyclic stress–strain relationship and the evolution of ratchetting strain, the damage evolution equations and fatigue life prediction model are derived for specimens with different orientations by constructing an orientation tensor and a strength tensor, respectively. Finally, a relationship among the loading conditions, build orientation, and fatigue life is established. Comparison with experimental results demonstrates that the proposed model exhibits good prediction accuracy, providing a reliable theoretical support for the fatigue life assessment of additively manufactured titanium alloy components.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"28 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288597","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}

引用次数: 0

Influence of the scale effect on the parameters of damage plasticity model for mechanical behaviour of rock mass 尺度效应对岩体力学行为损伤塑性模型参数的影响

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-11 DOI: 10.1177/10567895261458571

Radovanović Slobodan, Divac Dejan, Rakić Dragan, Šumarac Dragoslav

{"title":"Influence of the scale effect on the parameters of damage plasticity model for mechanical behaviour of rock mass","authors":"Radovanović Slobodan, Divac Dejan, Rakić Dragan, Šumarac Dragoslav","doi":"10.1177/10567895261458571","DOIUrl":"https://doi.org/10.1177/10567895261458571","url":null,"abstract":"Rock masses are inhomogeneous, fractured, anisotropic, and initially stressed in their natural state. They consist of intact rock or rock monolith and macro-damages, which include fractures, bedding planes, faults and other forms of discontinuity. It has been experimentally confirmed that with the increase of the rock mass scale, the mechanical properties of the rock mass decrease as a consequence of discontinuities. The subject of this paper is the analysis and determination of the scale effect on the damage plasticity model parameters, which describe the mechanical behaviour of the rock mass for different loads and scales. The scale effect is analysed on a constitutive model that can simulate the most complex mechanical behaviours in rock masses (elasto-plastic with damage in stiffness and strength). The analysis is based on the results of experimental tests of rock mass, which were carried out for different scales (scale of the rock mass sample in laboratory and scale of the in situ test – shear test), while the tests were performed at the same microlocation. For the considered experimental tests, appropriate finite element models (FEMs) were formed with boundary conditions that correspond to the ones from the experiments. By simulating the performed experiments with a series of FEM analyses with complex optimization algorithms, the parameters of damage plasticity model were determined for both values of the rock mass scale, proving the scale effect numerically. Based on the obtained results, analysis and discussion of the scale effect for a given rock mass were performed.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288657","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}

引用次数: 0

Baseline-free damage identification of a bridge based on the modal ingredients of the response principal components with limited sensors 基于有限传感器响应主成分模态成分的桥梁无基线损伤识别

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-11 DOI: 10.1177/10567895261458570

Enguo Guo, Yuming Lin, Zimo Zhu, Hongwei Ma, Jun Li, Zhenhua Nie

{"title":"Baseline-free damage identification of a bridge based on the modal ingredients of the response principal components with limited sensors","authors":"Enguo Guo, Yuming Lin, Zimo Zhu, Hongwei Ma, Jun Li, Zhenhua Nie","doi":"10.1177/10567895261458570","DOIUrl":"https://doi.org/10.1177/10567895261458570","url":null,"abstract":"Bridges are exposed to structural damage under moving vehicle loads, posing potential threats to structural safety. To address the limitations of conventional mode-shape-based damage identification methods, which rely on baseline data and a large number of sensors, this article presents a novel approach based on response principal components under moving loads. Considering vehicle–bridge interaction, this study elucidates the composition of the response's principal components of damaged beams. Initially, the dynamic response of the beam is decomposed using the proper orthogonal decomposition, and the analytical expressions for the principal components of responses are derived. Then, damage identification is conducted, indicating that the principal components of the response for a damaged beam can be decomposed into modal components, dynamic components, and damage components. Moving average filtering is employed in the separation process, thereby extracting the damage component. Numerical simulations and experimental validations are subsequently conducted to assess algorithm performance. This study highlights the role of the damage component within principal components, providing new insights into their physical interpretation in structural damage identification.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"11 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288688","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}

引用次数: 0

A stochastic damage model for concrete considering strain rate effect 考虑应变率效应的混凝土随机损伤模型

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2026-06-11 DOI: 10.1177/10567895261458561

Chenggong Guo, Ye Feng, Jie Li

{"title":"A stochastic damage model for concrete considering strain rate effect","authors":"Chenggong Guo, Ye Feng, Jie Li","doi":"10.1177/10567895261458561","DOIUrl":"https://doi.org/10.1177/10567895261458561","url":null,"abstract":"To represent the rate-dependent mechanical behavior of concrete, a stochastic damage model is proposed that integrates Langevin dynamics within the Micro-Meso Stochastic Fracture framework. In this model, the fracturing process of each micro-spring is described as a barrier-crossing event where the effective barrier height depends on the external loading rate. Evolution of the reaction coordinate follows the Langevin dynamics. Solving the corresponding Fokker–Planck–Kolmogorov equation yields the failure probability of each micro-spring under dynamic loading, from which the dynamic fracture strain is derived. Numerical results demonstrate that the model naturally captures the characteristic two-stage strength enhancement of concrete: a gradual increase of dynamic increase factor at low strain rates, followed by a rapid rise beyond a critical threshold. By linking the static fracture strain of each micro-spring to its unique initial energy barrier, the model assigns distinct rate sensitivities to different material constituents. This approach enables the model to reflect different rate sensitivities in tension and compression without separate empirical adjustments. Finally, simulations of reinforced concrete beams under various loading velocities, including high-rate impact, validate the model's capability to predict structural dynamic responses in practical engineering scenarios.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"16 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288658","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}

引用次数: 0