International Journal of Structural Stability and Dynamics最新文献_第7页

Nonlinear Vibrations and Stability Analysis of GPL Reinforced Pipes Conveying Fluid Excited by Arbitrary Initial Conditions- An Optimized Analytical Solution 任意初始条件激励下GPL增强管道的非线性振动与稳定性分析——一个优化解析解

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-10 DOI: 10.1142/s0219455424502109

Mohammad Ali Sabahi, Ali Reza Saidi, Reza Bahaadini

引用次数: 0

Free Vibration, Buckling, and Static Analysis of Sandwich Panels with a Square Honeycomb Core Using a Meshfree Method 方形蜂窝芯夹芯板的自由振动、屈曲和静力分析

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-09 DOI: 10.1142/s0219455424501773

Amir Arabzadeh, Saeid Sarrami, Mojtaba Azhari

{"title":"Free Vibration, Buckling, and Static Analysis of Sandwich Panels with a Square Honeycomb Core Using a Meshfree Method","authors":"Amir Arabzadeh, Saeid Sarrami, Mojtaba Azhari","doi":"10.1142/s0219455424501773","DOIUrl":"https://doi.org/10.1142/s0219455424501773","url":null,"abstract":"Meshless methods are a relatively modern approach that has garnered significant interest in analyzing and investigating complex structural problems thanks to distinctive features such as high accuracy, flexibility, rapid calculation speed, and cost–effectiveness. In the present study, the element-free Galerkin method is employed as a meshless approach, wherein a set of arbitrary nodes is distributed across the problem’s geometry, including its boundaries, to define the problem domain. The Moving Least Squares approximation is also utilized to formulate the shape functions. Given the intricate geometry of the honeycomb core within sandwich panels, the study employs the generalized method to derive the effective mechanical properties of the honeycomb core. Furthermore, to acquire displacement fields and establish relationships for the problem, the classic plate theory and the first-order shear deformation theory are independently applied. These relationships are then formulated using the Galerkin meshless method. Finally, the obtained parameters are evaluated, and the validity of these relationships is confirmed by comparing the results of this study with those presented in existing articles. The outlined procedure has been systematically simulated through a step-by-step MATLAB program. Subsequently, the impact of different boundary conditions, individual layer thicknesses, dimension ratios, and core wall spacing on the panel’s displacement, free-vibration, and buckling behaviors is thoroughly investigated. The obtained results substantiate the efficacy of the utilized methodology, demonstrating a favorable combination of accuracy and convergence rate.","PeriodicalId":54939,"journal":{"name":"International Journal of Structural Stability and Dynamics","volume":" 35","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Offshore triceratops with elliptical legs under postulated failure of tethers 具有椭圆腿的近海三角龙，假设系索失效

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s0219455424501670

Chandrasekaran Srinivasan, Ganta Shanmukha Rao

{"title":"Offshore triceratops with elliptical legs under postulated failure of tethers","authors":"Chandrasekaran Srinivasan, Ganta Shanmukha Rao","doi":"10.1142/s0219455424501670","DOIUrl":"https://doi.org/10.1142/s0219455424501670","url":null,"abstract":"Offshore Triceratops are classified as form-dominant structures possessing the novelty of counteracting the lateral loads with material strength and geometric form. The deck is supported by the buoyant legs, which are positioned on the seabed using taut-moored tethers. Ball joints connect the legs with the deck and help partially isolate the deck to remain horizontal under waves and wind. While offshore structures commonly have tubular legs, the current study investigates Triceratops with elliptical legs under the postulated failure of tethers. Detailed dynamic analysis under postulated failure conditions is carried out using ANSYS AQWA, while the LIBRIUM analysis is used to obtain the equilibrium position of the platform under intact and postulated failure conditions. Results show that under postulated failure conditions, the peaks of the power spectral density function of the pitch response are seen closer to its natural frequency and the input wave frequency. Ball joints restrain this rotation from transferring to the deck, conforming to one of the advantages of its existence. The fatigue life of tethers calculated for different load cases under intact and postulated failure conditions helps understand the stability conditions of the platform.","PeriodicalId":54939,"journal":{"name":"International Journal of Structural Stability and Dynamics","volume":"27 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135432003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Non-linear Forced vibration of functionally graded graphene-reinforced composite (FG-GRC) laminated cylindrical shells under different boundary conditions with thermal repercussions 梯度石墨烯增强复合材料(FG-GRC)层合圆柱壳在不同边界条件下的非线性强迫振动

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s0219455424502079

Hamad M Hasan, Ahmad Y Ali

引用次数: 0

A Small-Deformation Rate-Independent Continuous-Flow Model for Elasto-Plastic Frames Allowing Rapid Fatigue Predictions in Metallic Structures 一种与小变形速率无关的弹塑性框架连续流模型，允许金属结构的快速疲劳预测

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s0219455423400394

Dominic Jarecki, Bensingh Dhas, M. M. Shahzamanian, Arun Srinivasa, J. N. Reddy

引用次数: 0

Numerical modeling of tensile and compressive behavior of mild steel at high strain rate through SHPB in Ls-Dyna Ls-Dyna中基于SHPB的低碳钢高应变率拉伸和压缩行为数值模拟

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s021945542440011x

Ajay Kumar, MA Iqbal

引用次数: 0

Size-Dependent Frequency Analysis of Higher-order Microplates with FGP Core and Polymeric CNTRC Faces Considering Piezoelectricity 考虑压电性的FGP芯和聚合物CNTRC面高阶微孔板的尺寸相关频率分析

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s0219455424501694

Xiaonan Wang, Abhinav Kumar

{"title":"Size-Dependent Frequency Analysis of Higher-order Microplates with FGP Core and Polymeric CNTRC Faces Considering Piezoelectricity","authors":"Xiaonan Wang, Abhinav Kumar","doi":"10.1142/s0219455424501694","DOIUrl":"https://doi.org/10.1142/s0219455424501694","url":null,"abstract":"The present study examines a microplate with a porous structure and two nanocomposite piezoelectric layers. All the layers’ properties are graded functionally, bonded to each other, and supported by an elastic foundation that can withstand both normal and shear loads. Additionally, carbon nanotubes are used to increase the electro-mechanical performance of the piezoelectric patches, which are exposed to an externally applied electric voltage. Using a higher-order trigonometric shear deformation theory and von Karman’s assumptions, the kinematic relations are demonstrated. The governing motion equations are derived using Hamilton’s principle and variational technique, and the modified couple stress theory is employed to take the scale effect into account. An analytical method based on Fourier series functions is used to solve the differential motion equations, and the impact of diverse factors such as porosity percentage, pore distribution patterns, carbon nanotubes distribution patterns, and other key parameters on the normalized frequencies of the model is analyzed after verifying the accuracy of the results. The findings of this research may aid in the development and production of smart structures and devices with increased efficiency.","PeriodicalId":54939,"journal":{"name":"International Journal of Structural Stability and Dynamics","volume":"27 5‐6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135430962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dynamic response of infinitely beam resting on a fractional Pasternak viscoelastic foundation subjected to moving load 分数阶帕斯捷尔纳克粘弹性地基无限大梁在移动荷载作用下的动力响应

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s0219455424501451

Ti-Lei Ye, Ke-Zhen Yan

引用次数: 0

Intracellular dynamics of human cardiac ventricular myocyte: ORd model 人心室肌细胞胞内动力学:ORd模型

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International Journal of Structural Stability and Dynamics Pub Date : 2023-11-07 DOI: 10.1142/s0219455424400121

T.G. Mythri

引用次数: 0

Natural Frequency Maximization of Beam with an Internal Sliding Joint of Translational Restraint 平动约束内滑动节点梁固有频率最大化