Journal of Sandwich Structures & Materials最新文献_第10页

Face/core disbond fatigue growth in honeycomb cored aircraft sandwich elements under mixed mode flatwise tension loading 混合模态平面拉伸载荷下蜂窝芯飞机夹层构件面/芯剥离疲劳增长

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-07-16 DOI: 10.1177/10996362221115420

Arash Farshidi, C. Berggreen

{"title":"Face/core disbond fatigue growth in honeycomb cored aircraft sandwich elements under mixed mode flatwise tension loading","authors":"Arash Farshidi, C. Berggreen","doi":"10.1177/10996362221115420","DOIUrl":"https://doi.org/10.1177/10996362221115420","url":null,"abstract":"Disbond damage growth in honeycomb cored sandwich structures due to static and fatigue mixed mode loading is investigated numerically and experimentally. A two dimensional finite element model was generated using core homogenization and the Crack Surface Displacement Extrapolation mode separation method, integrated into a fracture mechanics based analysis sub-routine to predict face/core interface fatigue crack propagation. The Cycle Jump technique was furthermore applied to accelerate fatigue analysis. Mixed mode fatigue characterization testing was conducted using Double Cantilever Beam specimens loaded with Uneven Bending Moments, generating a relationship between crack propagation rates and energy release rate amplitudes as a modified Paris Law, measured at three mode-mixity phase angles. The measured Paris laws were subsequently used as input data for the numerical fatigue model. The numerical model was validated against CFRP/Nomex® Sandwich Tearing Test specimen tests with a propagating face/core interface crack yielding varying mode-mixities. The results from the validation showed good agreement between numerical predictions and experimental measurements.","PeriodicalId":17215,"journal":{"name":"Journal of Sandwich Structures & Materials","volume":"25 1","pages":"23 - 43"},"PeriodicalIF":3.9,"publicationDate":"2022-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42090521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 2

Determination of the fracture energy under mode I loading of a honeycomb/carbon-epoxy sandwich panel using the asymmetric double cantilever beam test 采用非对称双悬臂梁试验测定蜂窝/碳-环氧夹层板在I型载荷下的断裂能

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-07-15 DOI: 10.1177/10996362221114906

M. D. de Moura, R. Moreira, R. Rocha, Cristiana FM Oliveira

引用次数: 2

Strength reduction of foam-core sandwich structures with core mismatches 芯错配泡沫-芯夹层结构的强度折减

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-07-13 DOI: 10.1177/10996362221115418

Jacob I. Rome, V. Goyal, D. Patel

{"title":"Strength reduction of foam-core sandwich structures with core mismatches","authors":"Jacob I. Rome, V. Goyal, D. Patel","doi":"10.1177/10996362221115418","DOIUrl":"https://doi.org/10.1177/10996362221115418","url":null,"abstract":"Discontinuities in foam-core composite sandwich panels are challenging to assess, in part due to shortcomings in the fundamental understanding of failure processes occurring in the foam. Extensive testing and analysis are frequently required to overcome this lack of understanding when evaluating large-scale structures. This integrated experimental and analytical study investigates the effect of core thickness mismatches on the load carrying capabilities of composite sandwich structures. These mismatches are commonly found in large composite components in aerospace, marine, automotive and other industries and can cause major reductions in sandwich shear strength. Mismatches result from joints between separate pieces of foam core within the sandwich, becoming potential failure initiation sites. Quantifying the reduction in shear strength is difficult due to the complex interaction between the facesheets, butt-joints and core. Sandwich structures containing butt joints are investigated through a research effort that included fabrication, testing, analysis, and nondestructive evaluations. The strength reduction of sandwich beams due to the presence of butt joints is quantified via three-point bend (3PTB) testing for various types of mismatches such as height and thickness of the butt joint. Key mechanical properties of the foam and the lamina are measured through testing and incorporated into analytical models. A stress area approach is proposed as a failure criterion, as test results show this to be promising in predicting the strength reductions measured in the 3PTB testing and the failure initiation site.","PeriodicalId":17215,"journal":{"name":"Journal of Sandwich Structures & Materials","volume":"25 1","pages":"44 - 60"},"PeriodicalIF":3.9,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46892445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 1

Low velocity impact behavior of sandwich composites with different structural configurations of foam core: An experimental study 不同泡沫芯型夹层复合材料低速冲击性能的实验研究

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-07-11 DOI: 10.1177/10996362221115050

Huseyin E Yalkin, R. Karakuzu, Tuba Alpyildiz

引用次数: 1

Failure initiation and progression of sandwich beams under cyclic bending tests 循环弯曲试验下夹层梁的失效起始与发展

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-07-11 DOI: 10.1177/10996362221115049

Raja Ouled Ahmed Ben Ali, Dorra Ben Abdeljelil, S. Chatti

引用次数: 0

Experimental and numerical investigation on the buckling of 3D printed sandwich structure with lattice core 三维打印点阵芯夹层结构屈曲的实验与数值研究

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-06-21 DOI: 10.1177/10996362221108974

Yiqun Cao, Xiaoliang Geng, Hui Han, Yahui Lu, J. Wang, Changan Zhao

引用次数: 1

Strength of asymmetric tapered composite foam core sandwich structures subjected to thermomechanical loading 不对称锥形复合材料泡沫芯夹层结构在热机械载荷作用下的强度

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-06-08 DOI: 10.1177/10996362221106782

V. Goyal, Jacob I. Rome, D. Patel

引用次数: 0

On new benchmark free vibration solutions of rectangular sandwich panels within the symplectic solution framework 辛解框架下矩形夹芯板的新基准自由振动解

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-06-01 DOI: 10.1177/10996362221106780

Chao Zhou, Zhuofan Ni, Xinran Zheng, Bo Wang, Rui Li

{"title":"On new benchmark free vibration solutions of rectangular sandwich panels within the symplectic solution framework","authors":"Chao Zhou, Zhuofan Ni, Xinran Zheng, Bo Wang, Rui Li","doi":"10.1177/10996362221106780","DOIUrl":"https://doi.org/10.1177/10996362221106780","url":null,"abstract":"In this paper, the first attempt is made to obtain some new analytic free vibration solutions of rectangular sandwich panels within the symplectic solution framework, which are difficult to tackle within the conventional analytic solution framework. The sandwich panels with honeycomb and truss cores are first treated as equivalent thick plates. The governing dual equation is then established within the Hamiltonian system. Subsequently, the original problem is converted into two subproblems whose analytic solutions are acquired by applying the variable separation and symplectic eigen expansion. The superposition yields the final analytic free vibration solution, with the emerging coefficients determined according to the equivalence between the original problem and the superposition. The natural frequency and mode shape solutions by the present symplectic superposition method are quantitatively shown via numerical and graphical results, respectively, and are all well validated by consistency with classical solutions, experimental results, or the numerical solutions by the refined finite element modeling. Besides providing the new results that can serve as benchmarks, the effects of the size parameters on the natural frequencies of the sandwich panels are also analyzed. Since the developed method gives up the assumption of any trial solutions and follows a rigorous derivation to yield new analytic solutions, it provides opportunities for solving more intricate problems of sandwich panels and shells.","PeriodicalId":17215,"journal":{"name":"Journal of Sandwich Structures & Materials","volume":"24 1","pages":"1883 - 1904"},"PeriodicalIF":3.9,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45791709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 1

Investigation of the effect of wavy honeycomb on the bending performance of the sandwich structure 波浪蜂窝对夹层结构弯曲性能影响的研究

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-06-01 DOI: 10.1177/10996362221108973

Alparslan Solak, B. A. Temiztas, Berna Bolat

{"title":"Investigation of the effect of wavy honeycomb on the bending performance of the sandwich structure","authors":"Alparslan Solak, B. A. Temiztas, Berna Bolat","doi":"10.1177/10996362221108973","DOIUrl":"https://doi.org/10.1177/10996362221108973","url":null,"abstract":"Sandwich structures are frequently used in structural areas where lightness and strength are essential. These structures are indispensable for sailing boats, and ground and air vehicles. The base purpose of this study is to investigate the effect of wave parameters on the sandwich structure. The data obtained from the bending tests of the model created using Ls-Dyna was compared with the experimental data of the literature. There is a 3.05% difference between the peak force in experimental and Ls-Dyna. The force-deformation plots are coherent, and the progressive images of the sandwich structure during bending are similar. In addition, using theoretical approaches, the highest force and the amount of collapse during bending were determined. There is a difference of 3.1% between the theoretical approach and Ls-Dyna values. Thus, the Ls-Dyna model was validated. The flat cell walls of the honeycomb were modeled as a sine wave. Four wave numbers and wave amplitudes were used. In this way, 16 different analysis files were created. The results show that the new sandwich structure’s specific peak force and specific energy absorption (SEA) increased by 7–110% compared to the ordinary flat walled sandwich structure. This research will assist in the design of new sandwich structures.","PeriodicalId":17215,"journal":{"name":"Journal of Sandwich Structures & Materials","volume":"24 1","pages":"1905 - 1919"},"PeriodicalIF":3.9,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46116729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 2

Analysis of vibration characteristics of auxetic sandwich cylindrical shells resting on elastic foundation 弹性地基上弹性夹层圆柱壳的振动特性分析

IF 3.9 3区材料科学

Journal of Sandwich Structures & Materials Pub Date : 2022-05-18 DOI: 10.1177/10996362221101139

Bin Li, Tao Fu

引用次数: 4