Archive of Applied Mechanics最新文献_第6页

An improved decoupling method for dynamic modeling of wind turbine gearbox with planet gear journal bearings 一种改进的行星齿轮滑动轴承风力发电机齿轮箱动力学建模解耦方法

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2025-01-04 DOI: 10.1007/s00419-024-02748-6

Wenjun Fei, Jianjun Tan, Hao Tang, Hao Li, Caichao Zhu, Zhangdong Sun, Hongxia Wang

{"title":"An improved decoupling method for dynamic modeling of wind turbine gearbox with planet gear journal bearings","authors":"Wenjun Fei, Jianjun Tan, Hao Tang, Hao Li, Caichao Zhu, Zhangdong Sun, Hongxia Wang","doi":"10.1007/s00419-024-02748-6","DOIUrl":"10.1007/s00419-024-02748-6","url":null,"abstract":"<div><p>Planet gear journal bearing (PGJB) is usually modeled by nonlinear film force or linear stiffness-damping coefficient in the dynamic modeling of wind turbine gearbox (WTG) with PGJB. The former has high simulation accuracy but a high computational cost; the latter has high computational efficiency but neglects time-varying film force and journal-sleeve eccentricity, leading to limited simulation accuracy. In this study, an improved dynamic modeling approach of PGJB is proposed considering the time-varying journal-sleeve eccentricity and additional eccentricity correction force based on the linear stiffness-damping coefficient. A rigid-flexible coupling dynamic model of WTG with PGJB is established, considering the structural flexibility of gearbox housing, carrier, ring gear, and shafts, as well as the dynamic supporting forces of PGJB. The influences of operating conditions and PGJB’s parameters on calculation accuracy and dynamic characteristics of WTG are studied and partially verified by an initial experiment. The results show that the dynamic meshing force fluctuation makes PGJB’s stiffness-damping coefficient and additional eccentricity correction force change periodically. The proposed model accurately predicts system response within boundary conditions, especially a prediction error of 10% in planet gear vibration displacements at the rated operating condition. Decreasing the width-to-diameter ratio and radial clearance of PGJB and increasing input torque improve the load-sharing performance of WTG.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"95 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925706","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

Iterative algorithm for the conformal mapping from the unit disk to domains with regular boundaries 单位圆盘到正则边界域的保角映射的迭代算法

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2025-01-03 DOI: 10.1007/s00419-024-02749-5

Kai He, Chang Peng

引用次数: 0

A comprehensive model for thermo-hydromechanical behavior in nonlocal poroelastic semiconductors under laser excitation 非局部多孔弹性半导体在激光激励下的热-水力学行为综合模型

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2025-01-03 DOI: 10.1007/s00419-024-02744-w

Khaled Lotfy, Ibrahim S. Elshazly, Borhen Halouani, Praveen Ailawalia, Alaa A. El-Bary

{"title":"A comprehensive model for thermo-hydromechanical behavior in nonlocal poroelastic semiconductors under laser excitation","authors":"Khaled Lotfy, Ibrahim S. Elshazly, Borhen Halouani, Praveen Ailawalia, Alaa A. El-Bary","doi":"10.1007/s00419-024-02744-w","DOIUrl":"10.1007/s00419-024-02744-w","url":null,"abstract":"<div><p>This study introduces a generalized photothermal model to analyze the coupled thermo-hydromechanical behavior of a poroelastic, nonlocal semiconductor medium subjected to laser excitation. The medium is modeled as a saturated, dynamic, poroelastic half-space under time-harmonic loads, including thermal and mechanical forces and plasma electron distribution induced by laser pulses. A novel framework that integrates photo-thermoelasticity with hydrodynamic and poroelastic effects, capturing the nonlocal interactions at the nanoscale. At first, we subjected this medium to time-harmonic loads comprising thermal and normal loads and a distribution of plasma electrons applied with heating laser pulses. Afterward, we compared the photo-thermoelastic dynamic models to the coupled thermo-hydromechanical ones. The resulting nondimensional coupled equations were solved using two-dimensional normal mode analysis. The resulting nondimensional coupled equations were solved using two-dimensional normal mode analysis. The study examined the effects of nondimensional displacement, mechanical stress, excess pore water pressure, carrier concentration (density), and temperature distribution on the poroelastic half-space medium. Graphical representations were produced to highlight these effects based on specific parameters.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"95 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925727","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

Structural analysis of the isotropic composites by combining limit analysis with artificial neural networks 极限分析与人工神经网络相结合的各向同性复合材料结构分析

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-31 DOI: 10.1007/s00419-024-02734-y

Jun-Hyok Ri, Hyon-Sik Hong

引用次数: 0

A phenomenological aging-damage hyperelastic model based on configurational mechanics for short fiber-reinforced rubber composites 基于构形力学的短纤维增强橡胶复合材料现象学老化损伤超弹性模型

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-27 DOI: 10.1007/s00419-024-02746-8

Shenghao Chen, Chunguang Wang, Qun Li

引用次数: 0

Coupling of peridynamics with finite elements for brittle fracture problems in irregular meshgrids 不规则网格脆性断裂问题的周动力学与有限元耦合

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-27 DOI: 10.1007/s00419-024-02731-1

Shenhua Liu, Weizhong Chen, Jingqiang Yuan

{"title":"Coupling of peridynamics with finite elements for brittle fracture problems in irregular meshgrids","authors":"Shenhua Liu, Weizhong Chen, Jingqiang Yuan","doi":"10.1007/s00419-024-02731-1","DOIUrl":"10.1007/s00419-024-02731-1","url":null,"abstract":"<div><p>A PD-FEM coupling scheme with the potential to solve large-scale or multi-scale models is proposed which utilizes the advantages of PD in solving discontinuities and the computational efficiency of the finite element method. The scheme can perform the global unstructured discretization of the model, ensure that the crack initiation and propagation are not affected by the grid, and the boundary conditions can be flexibly arranged. The non-overlapping domain coupling method is used to couple the finite element domain and the circumferential dynamic domain to reduce the influence of the ghost force on the model solution. In order to verify the ghost force, the proposed PD-FEM model is used to simulate the displacement field distribution of the two-dimensional plate under uniaxial tension and the cantilever beam under concentrated force. The calculation results are compared with the theoretical calculation results and finite element calculation results. In addition, the scheme takes advantage of the high computational efficiency of the finite element method, and uses the OpenMP parallel computing framework of Fortran language to realize the efficient solution of the three-dimensional model. The validity and computational efficiency of the PD-FEM model are verified by the tensile test of the prefabricated cracked square plate, the double-notched specimen, the three-dimensional l-shaped plate and the composite mode fracture test of the three-dimensional three (four) point bending beam.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"95 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889646","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

Influence of CNTs distributions on three-dimensional vibration of sandwich plates with functionally-graded face sheets 碳纳米管分布对功能梯度夹层板三维振动的影响

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-23 DOI: 10.1007/s00419-024-02743-x

Yushan Xiao, Senlin Zhang, Zhen Wu, Jie Zhou, Zhengliang Liu, Xiaohui Ren

{"title":"Influence of CNTs distributions on three-dimensional vibration of sandwich plates with functionally-graded face sheets","authors":"Yushan Xiao, Senlin Zhang, Zhen Wu, Jie Zhou, Zhengliang Liu, Xiaohui Ren","doi":"10.1007/s00419-024-02743-x","DOIUrl":"10.1007/s00419-024-02743-x","url":null,"abstract":"<div><p>For a thick sandwich plate, transverse stretching vibration and in-plane vibration might occur before bending vibration in practical applications, which may threaten the dynamic safety of composite structures. Therefore, this work attempts to improve the in-plane and transverse stretching stiffness of sandwich structures by using carbon nanotubes (CNTs) to reinforce face sheets. To this end, it is necessary to understand well the influence of CNTs distributions on the three-dimensional (3D) vibration of functionally graded sandwich plates. Therefore, an extended global–local higher-order model will be proposed to accurately predict 3D vibration behaviors of sandwich structures reinforced by the CNTs, as the existing equivalent single-layer models will encounter difficulties in accurately analyzing such issues. Based on the proposed model, analytical solutions and finite element formulation have been presented to study the dynamic behaviors of sandwich plates with reinforcement of the CNTs, which have been verified by 3D elasticity solutions and three-dimensional finite element results. Moreover, the influence of the CNTs distributions and volume fractions on the vibration behaviors of sandwich plates has been investigated. Finally, by selecting appropriate profiles of the CNTs through the thickness, the in-plane and transverse stretching stiffness of sandwich structures can be significantly improved.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"95 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875191","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

Symplectic superposition solution for the buckling problem of orthotropic rectangular plates with four clamped edges 正交各向异性四边夹持矩形板屈曲问题的辛叠加解

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-23 DOI: 10.1007/s00419-024-02724-0

Mengmeng Zhang, Eburilitu Bai, Jinglong Wang

引用次数: 0

Fractional-order rate-dependent porous-thermo-elasticity model based on new fractional derivatives with non-singular kernels and 1D transient dynamic response analysis of magnesium-based porous half-space with voids 基于新型非奇异核分数阶导数的分数阶孔隙热弹性模型及含孔洞镁基多孔半空间一维瞬态动态响应分析

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-18 DOI: 10.1007/s00419-024-02719-x

Chenlin Li, Liangcheng Zheng, Tianhu He

{"title":"Fractional-order rate-dependent porous-thermo-elasticity model based on new fractional derivatives with non-singular kernels and 1D transient dynamic response analysis of magnesium-based porous half-space with voids","authors":"Chenlin Li, Liangcheng Zheng, Tianhu He","doi":"10.1007/s00419-024-02719-x","DOIUrl":"10.1007/s00419-024-02719-x","url":null,"abstract":"<div><p>Nowadays, the extensive applications of the ultrafast heating technologies (e.g., laser burst, induction heating, etc.) in the fabricating and manufacturing of the porous elastic solids (e.g., cellular material, mesoporous material, macroporous material, etc.) have aroused great interests on investigating the constitutive modeling and transient dynamic responses analysis of the porous-thermo-elastic coupling. Although the fractional temperature rate-dependent porous-thermo-elasticity theories have been historically proposed, the theoretical formulations still adopt the classical fractional derivatives with singular kernels, and the inherent strain relaxation effect and the associated memory dependency are not considered yet in the ultrafast heating condition. To compensate for such deficiency, the present work aims to establish a fractional-order rate-dependent porous-thermo-elasticity model based on the new fractional derivatives with the non-singular kernels (i.e., Caputo–Fabrizio, Atangana–Baleanu, and tempered Caputo fractional derivatives). With the aids of the extended thermodynamic principles, the new constitutive and governing equations are obtained. The proposed theoretical model is applied to investigate the 1D transient dynamic response analysis of magnesium-based porous half-space with voids by applying the Laplace transformation approach. The influences of the new fractional derivatives on the wave propagations and structural transient dynamic responses are evaluated and discussed.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"95 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845002","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

Series solutions for free in-plane vibration of composite plates with arbitrary shape 任意形状复合材料板面内自由振动的级数解

IF 2.2 3区工程技术

Archive of Applied Mechanics Pub Date : 2024-12-17 DOI: 10.1007/s00419-024-02740-0

Qiuhong Li, Yuyu Song, Joey Sanchez, Zunbing Sheng, Zhongxian Wang

{"title":"Series solutions for free in-plane vibration of composite plates with arbitrary shape","authors":"Qiuhong Li, Yuyu Song, Joey Sanchez, Zunbing Sheng, Zhongxian Wang","doi":"10.1007/s00419-024-02740-0","DOIUrl":"10.1007/s00419-024-02740-0","url":null,"abstract":"<div><p>In this paper, we present a series solution for free in-plane vibration of composite plates with arbitrary shape by using the domain segmentation integral method and derive the tangential and normal vibration displacement equations for the plate boundaries. The solution presented is widely applicable to the analysis of free in-plane vibration of plates; it can accurately and effectively solve the in-plane free vibration problem of arbitrarily shaped non-homogeneous orthotropic plates of variable thickness, complex geometry and variable material properties with respect to in-plane coordinate parameters. To verify the effectiveness, accuracy and applicability of the proposed solution, we perform a computational analysis of different orthogonalization intervals, weight functions, penalty stiffness and the truncation number of orthogonal polynomials. Additionally, the effects of the parameters of thickness and nonhomogeneity on the in-plane vibration characteristics of plate are studied. As a result, we present a new series of natural frequencies and mode shapes for arbitrarily shaped non-homogeneous orthotropic plates of variable thickness.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"95 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844824","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