International Journal of Damage Mechanics最新文献_第2页

Multi-scale study on the fatigue mechanical properties and energy laws of thermal-damage granite under fatigue loading 疲劳加载下热损伤花岗岩的疲劳力学性能和能量规律的多尺度研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-22 DOI: 10.1177/10567895241302520

Zhanming Shi, Jiangteng Li, PG Ranjith, Mengxiang Wang, Hang Lin, Dongya Han, Kaihui Li

{"title":"Multi-scale study on the fatigue mechanical properties and energy laws of thermal-damage granite under fatigue loading","authors":"Zhanming Shi, Jiangteng Li, PG Ranjith, Mengxiang Wang, Hang Lin, Dongya Han, Kaihui Li","doi":"10.1177/10567895241302520","DOIUrl":"https://doi.org/10.1177/10567895241302520","url":null,"abstract":"To reveal the mechanical properties and energy laws of high-temperature rock mass engineering under fatigue disturbance, this paper conducted a multi-scale study on thermally damaged granite. First, the macroscopic mechanical properties of the samples were studied. Secondly, the law of energy evolution was summarized based on thermodynamic theory. Then, a rockburst index was introduced, and NMR and SEM technologies were used to conduct a multi-scale discussion on the mechanism of influence on temperature. Finally, an improved nonlinear continuous damage model (INCDM) was established, and a hardening index and damage growth rate of low-cycle fatigue were defined. The result shows that temperature first strengthens and then weakens the fatigue mechanical properties of the sample, with a threshold temperature of 225°C. Temperatures below the threshold cause uneven expansion of mineral particles to squeeze natural pores, reduce the porosity of the sample, and thus increase the fatigue life and strength of the sample. Temperatures above the threshold cause dehydration and phase change of the minerals such as quartz, feldspar, and mica, forming transgranular/intergranular cracks, parallel cleavage and stratification, thus reducing the fatigue strength of the sample. In addition, the total energy, elastic energy and dissipated energy density of the sample all show a step-like increasing trend with the normalized cycle index. Energy storage satisfies a linear law. Affected by accelerated energy release, energy dissipation changes from linear to nonlinear law. As the temperature increases, the rockburst tendency first increases and then decreases. The fatigue failure changes from sudden instability to progressive instability mode. The fatigue-thermal damage of the sample satisfies a power law, and increases as a compound power function with the normalized cycle index.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"6 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142690733","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

On effective moduli of defective beam lattices via the lattice green’s functions 通过晶格绿色函数论缺陷梁晶格的有效模量

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-22 DOI: 10.1177/10567895241292746

Yuhao Gong, Jinxing Liu, Naigang Liang

{"title":"On effective moduli of defective beam lattices via the lattice green’s functions","authors":"Yuhao Gong, Jinxing Liu, Naigang Liang","doi":"10.1177/10567895241292746","DOIUrl":"https://doi.org/10.1177/10567895241292746","url":null,"abstract":"A method is proposed to analyze the effective moduli of periodically defective beam lattices by using the Lattice Green’s Functions (LGF). The LGF of beam lattices is built to calculate the displacement caused by external nodal forces. We describe the stress redistribution due to defects by applying extra nodal forces. Then, analyzing a defective unit cell is equivalently transformed to that on its perfect counterpart by representing the influence of defects by an equivalent force field based on the superposition principle. Based on the obtained displacement field of the defective unit cell, the elastic moduli of defective lattices can be calibrated based on the equivalence of strain energy, which indicates that the strain energy of the structural energetic expression is equal to its continuum counterpart. By comparing it with finite element simulations, the prediction ability of the proposed method has been demonstrated. Systematic parametric analyses are then carried out to illustrate the effects of element types, defect types, the defect number density, and the slenderness ratio on the effective moduli of defective lattices.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142690732","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 comparative study on combined high and low cycle fatigue life prediction model considering loading interaction 考虑加载相互作用的高低循环疲劳寿命综合预测模型比较研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-21 DOI: 10.1177/10567895241292747

Peng Yue, Changyu Zhou, Junfu Zhang, Xiao Zhang, Xinfa Du, Pengxiang Liu

引用次数: 0

Micro-damage instability mechanisms in composite materials: Cracking coalescence versus fibre ductility and slippage 复合材料中的微损伤不稳定机制：裂纹凝聚与纤维延展性和滑移

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-14 DOI: 10.1177/10567895241297313

Alberto Carpinteri, Federico Accornero

{"title":"Micro-damage instability mechanisms in composite materials: Cracking coalescence versus fibre ductility and slippage","authors":"Alberto Carpinteri, Federico Accornero","doi":"10.1177/10567895241297313","DOIUrl":"https://doi.org/10.1177/10567895241297313","url":null,"abstract":"The load-displacement softening response of quasi-brittle solids exhibits an unstable structural behavior, which is characterised by a negative slope in the post-peak regime. In severely brittle situations, the post-peak behaviour can show a virtual positive slope, the fracture propagation occurring unexpectedly with a catastrophic loss in the load-carrying capacity. In this case, if the displacement controls the loading process, the curve exhibits a discontinuity and the representative point drops to the lower branch with a negative slope. On the other hand, in order to obtain a stable crack growth, a decrease both in load and in displacement is required. In the last forty years, in-depth study of the so-called snap-back instability was conducted in relation to crack propagation phenomena in quasi-brittle materials. In the present work, the structural response of two brittle-matrix specimens is analysed: the first contains a distribution of collinear micro-cracks, whereas the second presents multiple parallel reinforcing fibres embedded in the matrix. In both cases, it is shown that the structural response presents a discrete number of snap-back instabilities with related peaks and valleys, the crack propagation occurring alternately within the matrix and through the heterogeneities. Thus, the strong analogy between weakened and strengthened zones consists in a multiple snap-back mechanical response, where descending branches of propagating cracks alternate with ascending (linear) branches of arrested cracks.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"9 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610207","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 numerical study of Mullins softening effects on mode I crack propagation in viscoelastic solids 粘弹性固体中模式 I 裂纹扩展的穆林斯软化效应数值研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-11 DOI: 10.1177/10567895241297392

Nan Hou, Qiang Guo, Fahmi Zaïri, Huixia Xu, Ning Ding

{"title":"A numerical study of Mullins softening effects on mode I crack propagation in viscoelastic solids","authors":"Nan Hou, Qiang Guo, Fahmi Zaïri, Huixia Xu, Ning Ding","doi":"10.1177/10567895241297392","DOIUrl":"https://doi.org/10.1177/10567895241297392","url":null,"abstract":"This paper presents a finite element analysis of steady-state crack propagation in viscoelastic soft solids exhibiting Mullins softening. A cohesive-zone model is employed to simulate the localized processes at the tip of a Mode I crack in materials governed by viscoelastic behavior and damage-induced Mullins effects. The study numerically evaluates the intrinsic dissipation characteristics of typical rubber-like materials, focusing on the influence of key factors such as Mullins damage, relaxation modulus, and relaxation time. The impact of these factors on material toughening is examined, with particular emphasis on their role in crack propagation. The results reveal that crack propagation velocity is highly sensitive to the interplay between energy dissipation mechanisms. Specifically, Mullins damage parameters are shown to increase fracture toughness by raising the local energy release rate threshold at the crack tip. Additionally, the relaxation modulus enhances viscous dissipation, further elevating this threshold and subsequently reducing crack propagation velocity. Interestingly, an inverse relationship between relaxation time and crack propagation velocity is observed. The study provides a detailed analysis of the dissipation mechanisms at the crack tip, offering valuable insights for improving material toughness.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"80 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598231","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

Peridynamics simulations of the damage of reinforced concrete structures under radial blasting 径向爆破对钢筋混凝土结构破坏的周动力学模拟

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-08 DOI: 10.1177/10567895241292745

Chuangxiang Shi, Songxuan Zhang, Xiaoliang Zhang, Shaofan Li

{"title":"Peridynamics simulations of the damage of reinforced concrete structures under radial blasting","authors":"Chuangxiang Shi, Songxuan Zhang, Xiaoliang Zhang, Shaofan Li","doi":"10.1177/10567895241292745","DOIUrl":"https://doi.org/10.1177/10567895241292745","url":null,"abstract":"Concrete is prone to damage under explosive loads, which can cause a large number of casualties and property losses. The concrete fragmentation process during explosion is transient and dynamic, and the experimental measurement of such events is difficult and risky to conduct, and the intermediate explosion process is difficult to observe in the experimental tests. Therefore, the numerical simulation is an ideal method to model and simulate the explosion process of concrete. Different from the traditional finite element method, Peridynamics (PD) method uses the spatial integral equation to replace the traditional local differential equation to solve the fragmentation problem with massive and complex discontinuous patterns. In this study, a peridynamics (PD) model is developed to simulate the failure process of reinforced concrete (RC) structures under radial blasting. Concrete PD models with different cavity sizes and reinforcement conditions were established and calibrated with the experimental data. We find that the crack growth and damage pattern obtained in the peridynamics simulation is consistent with the experiment test results, which verifies the feasibility of peridynamics method as a modeling tool for modeling concrete damage under explosive load and for evaluating anti-explosion performance of RC concrete structures.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597309","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

Experimental and theoretical model study on grouting reinforcement effect of fractured rock mass 裂隙岩体灌浆加固效应的实验和理论模型研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-11-08 DOI: 10.1177/10567895241297699

Hui Wang, Hairong Yu, Xiaotong Zhang, Hongyu Zhuo, Jitao Jia, Haosong Wang, Hongyuan Huai

{"title":"Experimental and theoretical model study on grouting reinforcement effect of fractured rock mass","authors":"Hui Wang, Hairong Yu, Xiaotong Zhang, Hongyu Zhuo, Jitao Jia, Haosong Wang, Hongyuan Huai","doi":"10.1177/10567895241297699","DOIUrl":"https://doi.org/10.1177/10567895241297699","url":null,"abstract":"The mechanical properties of fractured rock mass have an important influence on the safety and stability of underground engineering. Grouting is a common way to reinforce fractured rock mass. The uniaxial compression tests of red sandstone specimens with different prefabricated crack inclination angles before and after grouting were carried out. Based on the load-deformation data and synchronous image acquisition, the mechanical properties, crack propagation law and failure mode of the specimens before and after grouting were studied. The results show that the peak strength and elastic modulus of the ungrouted specimen increase with the increase of the inclination angle of the prefabricated crack. Compared with the ungrouted specimen, grouting can significantly improve the peak strength and elastic modulus of the specimen. The cracks of the ungrouted specimen mainly initiate from the tip of the prefabricated crack, and the cracks of the grouting specimen mainly initiate from the upper and lower surfaces of the specimen and the far field. Based on the macroscopic and microscopic damage theory, the constitutive model of grouting rock mass is proposed. By comparing with the experimental data, the rationality of the constitutive model is verified.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"35 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598142","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 novel continuum damage evolution model based on the concept of damage driving force for unidirectional composites 基于单向复合材料损伤驱动力概念的新型连续损伤演变模型

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-10-31 DOI: 10.1177/10567895241292744

Tianhong Yu, Wenxuan Qi, Elena Sitnikova, Shuguang Li

{"title":"A novel continuum damage evolution model based on the concept of damage driving force for unidirectional composites","authors":"Tianhong Yu, Wenxuan Qi, Elena Sitnikova, Shuguang Li","doi":"10.1177/10567895241292744","DOIUrl":"https://doi.org/10.1177/10567895241292744","url":null,"abstract":"A novel damage evolution model for unidirectional (UD) composites is established in this paper in the context of continuum damage mechanics (CDM). It addresses matrix cracking and it is to be applied along with the damage representation established previously. The concept of damage driving force is employed based on the Helmholtz free energy. It is shown that the damage driving force can be partitioned into three parts, resembling closely three conventional modes of fracture, respectively. A damage evolution law is derived accordingly based on the newly obtained expressions of the damage driving force. The fully rationalised Tsai-Wu criterion is employed in the model for predicting the initiation of matrix cracking damage and fibre failure, assisted with the rationalised maximum stress criterion for identifying the damage modes. A mechanism is introduced to describe the unloading behaviour as a part of the proposed model. The predictions were validated against experimental results, showing good agreement with the experiments and demonstrating the capability and effectiveness of the proposed model.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"48 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561879","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

Size effect modellings of axial compressive failure of RC columns at low temperatures 低温条件下钢筋混凝土柱轴压破坏的尺寸效应模型

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-10-25 DOI: 10.1177/10567895241292763

Liu Jin, Bo Lu, Wenxuan Yu, Xiuli Du

{"title":"Size effect modellings of axial compressive failure of RC columns at low temperatures","authors":"Liu Jin, Bo Lu, Wenxuan Yu, Xiuli Du","doi":"10.1177/10567895241292763","DOIUrl":"https://doi.org/10.1177/10567895241292763","url":null,"abstract":"This paper applied a thermal-mechanical sequential coupled mesoscopic simulation method to explore the axial compression performance and the corresponding size effect of Reinforced Concrete Columns confined by Stirrups (i.e., RCCS) at low temperatures, with considering the interaction between concrete meso-components and steel bars as well as the low-temperature effect of mechanical parameters. Based on the heat conduction analysis, the axial compression mechanical failure behavior of RCCS with four structural sizes (i.e., 267 × 267 × 801, 400 × 400 × 1200, 600 × 600 × 1800 and 800 × 800 × 2400 mm) and two stirrup ratios (i.e., 1.26% and 2.89%) at different temperatures (i.e., T = 20, −30, −60 and −90°C) was subsequently simulated. The effects of temperature, structural size and volume stirrup ratio on axial compression properties were quantitatively discussed. The results showed that the peak strength of RCCS increased with the decreasing temperature, and the smaller-sized RCCS showed a stronger effect of low-temperature enhancement. Both the residual strength and displacement ductility coefficient decreased with the decreasing temperature. The peak strength, residual strength and displacement ductility coefficient of RCCS decreased with the increasing structural size, showing obvious size effects. The size effect on peak strength increased with the decreasing temperature, (the maximum increase was nearly 140%), but the size effect on displacement ductility coefficient decreased (the maximum decrease was nearly 70%). The peak strength, residual strength and ductility were enhanced with the increasing volume stirrup ratio, which was helpful to reduce the influence of size effect. Finally, an improved size effect theoretical model was proposed, which can effectively predict the axial compressive strength of RCCS with different structural sizes and stirrup ratios at room and low temperatures. The present research results can provide reference for the large-scale engineering application of RCCS in low-temperature environments.","PeriodicalId":13837,"journal":{"name":"International Journal of Damage Mechanics","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142490647","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 creep constitutive model of layered rockconsidering anisotropic and damage factors after hightemperature exposure 考虑高温暴露后各向异性和损伤因素的层状岩石蠕变构成模型研究

IF 4.2 2区工程技术

International Journal of Damage Mechanics Pub Date : 2024-10-22 DOI: 10.1177/10567895241292748

Lubo Meng, Shan Zhang, Tianbin Li, Tianyi Liu, Haoyu Li

引用次数: 0