Mechanics of Composite Materials最新文献_第2页

The Influence of Filler Concentrations and Processing Parameters on the Mechanical Properties of Uncompatibilized CS/HDPE Biocomposites 填料浓度和加工参数对未共混 CS/HDPE 生物复合材料力学性能的影响

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-08-19 DOI: 10.1007/s11029-024-10218-x

L. O. Ejeta, Y. Zheng, Y. Zhou

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Fatigue Analysis of Woven Intraply Carbon/Kevlar Hybrid Composite Below Ambient Temperature 碳/凯芙拉混合编织内层复合材料在常温下的疲劳分析

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-08-19 DOI: 10.1007/s11029-024-10215-0

D. L. Majid, N. Hashim, D. M. Baitab, S. Karunakaran

{"title":"Fatigue Analysis of Woven Intraply Carbon/Kevlar Hybrid Composite Below Ambient Temperature","authors":"D. L. Majid, N. Hashim, D. M. Baitab, S. Karunakaran","doi":"10.1007/s11029-024-10215-0","DOIUrl":"https://doi.org/10.1007/s11029-024-10215-0","url":null,"abstract":"The low-cycle fatigue behavior of woven intraply carbon/Kevlar reinforced epoxy hybrid composites below ambient temperatures at 0, –5, and –10°C was investigated. Samples of woven intraply carbon/Kevlar reinforced hybrid composites were fabricated by means of vacuum infusion technique and tested for stress-controlled constant amplitude fatigue tests at stress ratio of 1 and 10 Hz within stress range of 60 to 90% of its tensile strength. The correlation between the elastic modulus and strength with the fatigue performance was established. Fatigue results showed linearized fatigue curves with larger scatter observed at –5 and –10°C. Using the maximum likelihood estimation (MLE), the life degradation rate at sub-zero temperature decreased from 5.2 to ~ 3% of its ultimate tensile strength. An inverse correlation between the degradation rate and the tensile strength was observed. In addition, surface temperatures were monitored during the fatigue cycles, and it was found that self-heating was significantly influenced by the fiber structures and its stiffening properties. At lower temperature, the heat generation also found to be influenced by the tensile modulus but did not affect the material fatigue properties.","PeriodicalId":18308,"journal":{"name":"Mechanics of Composite Materials","volume":"252 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Experimental and Numerical Studies on Core Stiffened Sandwich Composite Panel 夹芯加固三明治复合板的实验和数值研究

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-08-19 DOI: 10.1007/s11029-024-10224-z

Rajesh Addanki, Sanjay Anand Rao Khalane

{"title":"Experimental and Numerical Studies on Core Stiffened Sandwich Composite Panel","authors":"Rajesh Addanki, Sanjay Anand Rao Khalane","doi":"10.1007/s11029-024-10224-z","DOIUrl":"https://doi.org/10.1007/s11029-024-10224-z","url":null,"abstract":"The experimental and numerical studies of carbon composite sandwich panels with stiffened polyurethane (PU) foam core were carried out. A novel concept of stiffening the panels by co-bonding to skin was introduced. The stiffening of PU core was conceptualized using carbon composite by wrapping and skin/facesheet was co-bonded. Four different sandwich panel configurations such as plain, longitudinal stiffening, transverse stiffening, and stiffening in both directions were manufactured. To explore the suitability of this novel concept for structural applications, the bending behavior of panels were investigated under three-point bend tests. A three-dimensional finite element model incorporating stiffness degradation concept was developed in ANSYS to understand the fundamental behavior of configured panels. Experimental and numerical results showed failure patterns like shear in foam core, indentation in composite skin and bulge/lift-off of outer composite stiffener. Comparative study of results showed that oriented stiffened sandwich panels have superior mechanical characteristics with 75% increase in the load-bearing capacity and 29% reduction in displacement. The failure patterns were envisaged through microscopy and computer-based tomography techniques.","PeriodicalId":18308,"journal":{"name":"Mechanics of Composite Materials","volume":"22 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A Study of Energy Dissipation of Polypropylene Fiber Reinforced Recycled Concrete Under Uniaxial Compression 聚丙烯纤维增强再生混凝土在单轴压缩下的能量耗散研究

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-08-19 DOI: 10.1007/s11029-024-10222-1

Daowen Zhou, Xin Yang, Yutao Miao, Tingtao Chen, Zhixiong Yao

{"title":"A Study of Energy Dissipation of Polypropylene Fiber Reinforced Recycled Concrete Under Uniaxial Compression","authors":"Daowen Zhou, Xin Yang, Yutao Miao, Tingtao Chen, Zhixiong Yao","doi":"10.1007/s11029-024-10222-1","DOIUrl":"https://doi.org/10.1007/s11029-024-10222-1","url":null,"abstract":"The energy dissipation and stress-strain characteristics, and characteristic stresses, namely the crack initiation σci , dilatancy σcd , and peak σf stresses, of polypropylene fiber-reinforced recycled concrete under uniaxial compression were studied. According to the research results, the crack initiation and peak stresses of the specimen with single-blend polypropylene coarse fiber (No. 3) and the specimens with mixed-blend coarse and fine polypropylene fibers (No. 4 and No. 5) are higher than those of the specimen with single-blend fine fiber and plain concrete. The analysis of the energy characteristics and failure mechanism of polypropylene fiber-reinforced recycled concrete during loading based on the principle of energy conservation showed that the total strain energy, elastic strain energy, and dissipation energy absorbed per unit volume increase with the blending of polypropylene fiber. The strain energy and elastic strain energy of coarse aggregates with a 5-10 to 10-20 mm coarse aggregate size ratios of 5:5 are higher than those of 4:6 and 6:4. It was found that the continuous blending of polypropylene fiber increases the elastic strain energy, causing the point at which the dissipation energy exceeds the elastic strain energy move further and further back. The position where the dissipation energy exceeds the elastic strain energy can be used to evaluate the blending effect of polypropylene fiber. The further back the position, the better the blending effect.","PeriodicalId":18308,"journal":{"name":"Mechanics of Composite Materials","volume":"7 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Vibration of Functionally Graded Electrostatically Actuated Microbeams Considering the Influence of Intermolecular Forces with Zero Initial Conditions 考虑到零初始条件下分子间作用力影响的功能分级静电驱动微梁的非线性振动

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-07-02 DOI: 10.1007/s11029-024-10211-4

Dang Van Hieu

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Flutter of a Sandwich Shell with Inner Cylinder and Annular Ribs 带有内圆柱和环形肋条的三明治壳体的扑动

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-07-02 DOI: 10.1007/s11029-024-10214-1

V. N. Bakulin, A. Ya. Nedbai

引用次数: 0

Forced Bending Vibrations of a Plane Rod Fixed on a Rigid Support Element of Finite Length Under the Action of an External Transverse Force Aplied to Its Free End 固定在长度有限的刚性支撑元件上的平面杆在自由端施加横向外力作用下的强制弯曲振动

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-07-02 DOI: 10.1007/s11029-024-10206-1

V. N. Paimushin, V. M. Shishkin, S. F. Chumakova

{"title":"Forced Bending Vibrations of a Plane Rod Fixed on a Rigid Support Element of Finite Length Under the Action of an External Transverse Force Aplied to Its Free End","authors":"V. N. Paimushin, V. M. Shishkin, S. F. Chumakova","doi":"10.1007/s11029-024-10206-1","DOIUrl":"https://doi.org/10.1007/s11029-024-10206-1","url":null,"abstract":"The problem of forced bending vibrations of a plane rod with a finite-length fastening section under the action of an external transverse force at its free end was solved. The classical Kirchhoff–Love model in the classical geometrically nonlinear approximation was used to describe the deformation process of the free part of the rod. The deformation of its fixed part was described by the Timoshenko refined shear model that takes into account transverse strains. The conditions of kinematic conjugation of the free and fixed parts of the rod were formulated. The equations of motion, the corresponding boundary conditions, and the force conditions of conjugation of the rod parts were obtained using the Hamilton–Ostrogradsky variational principle. An exact analytical solution of the problem of forced vibrations of a rod under the action of a harmonic transverse force at the free end of the unfastened part of the rod was deduced. Numerical experiments were carried out to study the resonant vibrations of rods made of unidirectional fiber composite. The effect of a noticeable increase of the amplitudes of transverse vibrations of the ends of the cantilever parts of the rods studied due to transverse contraction of the fixed section was revealed. Taking into account the transverse contraction caused an almost twofold reduction of the maximum transverse shear stresses in the fixed part of the duralumin rod.","PeriodicalId":18308,"journal":{"name":"Mechanics of Composite Materials","volume":"30 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Problems on Delamination of Fibrous Composites (to the 110TH Anniversary of the Birth of Yu. N. Rabotnov) 纤维复合材料的分层问题（纪念尤-尼-拉波特诺夫诞辰110周年）

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-06-28 DOI: 10.1007/s11029-024-10208-z

A. N. Polilov

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Preparation and Characterisation of Composites from Industrial Waste: Wood Flour and Expanded Ethylene Vinyl Acetate 利用工业废料制备复合材料并确定其特性：木粉和膨胀乙烯醋酸乙烯酯

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-06-26 DOI: 10.1007/s11029-024-10202-5

G. Trifeldaite-Baranauskiene, E. Stankute, A. Aniskevich, D. Zeleniakiene, K. Zukiene

{"title":"Preparation and Characterisation of Composites from Industrial Waste: Wood Flour and Expanded Ethylene Vinyl Acetate","authors":"G. Trifeldaite-Baranauskiene, E. Stankute, A. Aniskevich, D. Zeleniakiene, K. Zukiene","doi":"10.1007/s11029-024-10202-5","DOIUrl":"https://doi.org/10.1007/s11029-024-10202-5","url":null,"abstract":"The aim of the present study is to use beech wood flour (WF) and expanded ethylene vinyl acetate (EVA) copolymer industrial waste to develop a sustainable composite and its production method for further engineering use. Polyamide (PA) powder waste obtained after multiple selective laser sintering (SLS) thermal cycles was used to increase the strength and adhesion between the waste composite components. The morphological, mechanical, and thermal properties of the EVA/WF composites were characterised along with their interfacial wetting and water absorption properties. Optical and electron microscopy investigations revealed that the composites prepared have homogeneous dispersion and good interfacial adhesion between EVA and wood. The addition of SLS waste PA powder increases the strength and stiffness of the composite developed. The composite with 40 wt% WF exhibited the best water absorption, mechanical properties, and processability among the various compositions. The sustainable composite proposed can replace commercially available materials, which helps to save resources and reduce waste.","PeriodicalId":18308,"journal":{"name":"Mechanics of Composite Materials","volume":"166 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Buckling and Postbuckling Response of Porous FGM Shallow Spherical Caps and Circular Plates with Nonlinear Elastic Foundation Effects Using the Ritz Energy Method 使用里兹能量法计算具有非线性弹性地基效应的多孔 FGM 浅球形盖帽和圆形板的非线性屈曲和屈曲后响应

IF 1.7 4区材料科学

Mechanics of Composite Materials Pub Date : 2024-06-26 DOI: 10.1007/s11029-024-10200-7

Bui Tien Tu, Dang Thuy Dong, Vu Minh Duc, Vu Hoai Nam

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