International Journal of Non-Linear Mechanics最新文献_第6页

Analytical study of the elastoplastic buckling of conical shells under external pressure 外压作用下锥形壳弹塑性屈曲的分析研究

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-03-07 DOI: 10.1016/j.ijnonlinmec.2025.105069

Gwladys Belone , Van Dong Do , Philippe Le Grognec , Philippe Rohart , Samir Assaf

{"title":"Analytical study of the elastoplastic buckling of conical shells under external pressure","authors":"Gwladys Belone , Van Dong Do , Philippe Le Grognec , Philippe Rohart , Samir Assaf","doi":"10.1016/j.ijnonlinmec.2025.105069","DOIUrl":"10.1016/j.ijnonlinmec.2025.105069","url":null,"abstract":"<div><div>Pressure vessels are traditionally made up of cylindrical shells and hemispherical or ellipsoidal ends, but in some cases, conical sections are also present so as to ensure the transition between cylindrical sections of different radii. The buckling phenomenon is one of the main failure mode of such pressure equipments, due to the thinness of the components and the compressive stresses commonly undergone throughout standard loads like external pressure, and thus an essential dimensioning factor. If the buckling behavior of cylindrical and spherical shells has been widely investigated in the literature, the specific case of conical shells has received much less attention, all the more so in plasticity. Therefore, the present paper aims to address the problem of elastoplastic buckling of a conical shell under external pressure in an analytical way. This study is based on the plastic bifurcation theory and relies on the simplest possible hypotheses in terms of kinematics, constitutive law and boundary conditions. However, in absence of closed-form expressions, approximate solutions for the critical pressure are sought, based on the choice of appropriate shape functions in the framework of the Rayleigh–Ritz method. Unlike the case of cylindrical or spherical shells under external pressure which display uniform pre-critical stress states, the stress field appears to be heterogeneous in the length direction of a conical shell, so that three scenarios may occur. A conical shell may buckle elastically, entirely in the plastic range, or in an intermediate situation where the shell is partially elastic and plastic at the critical time. The present analytical solution is validated against reference numerical results obtained through finite element computations, considering a wide range of geometric and material parameters so as to cover all three scenarios.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105069"},"PeriodicalIF":2.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643558","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

Unveiling the dynamics of particle-reinforced electro-magneto-active circular membrane 揭示颗粒增强电磁有源圆膜的动力学

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-03-05 DOI: 10.1016/j.ijnonlinmec.2025.105064

Ankush Agrawal, Aman Khurana

{"title":"Unveiling the dynamics of particle-reinforced electro-magneto-active circular membrane","authors":"Ankush Agrawal, Aman Khurana","doi":"10.1016/j.ijnonlinmec.2025.105064","DOIUrl":"10.1016/j.ijnonlinmec.2025.105064","url":null,"abstract":"<div><div>Electro-magneto-active (EMA) membranes are materials that integrate electromagnetic and active properties to form flexible, responsive surfaces. These membranes typically consist of a soft, elastic matrix embedded with magnetic or electromagnetic particles, which can be manipulated by external magnetic fields or electrical currents. This paper investigates the nonlinear dynamics of an electro-magneto-active circular membrane, a sophisticated smart actuator. Specifically, a continuum physics-based model is implemented to predict the membrane’s dynamic response to applied electro-magneto-mechanical loads. The obtained results offer valuable preliminary insights into the influence of both DC and AC dynamic actuation modes on the membrane’s nonlinear behavior. Notably, we find that increased particle reinforcement, as indicated by the filler content, significantly enhances polymer strength and reduces deformation. Also, an increase in shear modulus ratio results in a reduction in oscillation intensity and an enhancement in excitation frequency. Additionally, time–history response, Poincaré maps, and phase diagrams are utilized to evaluate the membrane’s stability, periodicity, beating phenomena, and resonant behavior. These findings are pivotal for advancing the design and functionality of smart membranes in various biomedical applications.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105064"},"PeriodicalIF":2.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619565","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

Numerical implementation for the cyclic elasto-plasticity model of Inconel 690 considering cyclic hardening followed by softening 考虑循环先硬化后软化的Inconel 690循环弹塑性模型的数值实现

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-27 DOI: 10.1016/j.ijnonlinmec.2025.105068

Chengyue Liu , Tao Hu , Hai Xie , Tengwu He , Miaolin Feng

{"title":"Numerical implementation for the cyclic elasto-plasticity model of Inconel 690 considering cyclic hardening followed by softening","authors":"Chengyue Liu , Tao Hu , Hai Xie , Tengwu He , Miaolin Feng","doi":"10.1016/j.ijnonlinmec.2025.105068","DOIUrl":"10.1016/j.ijnonlinmec.2025.105068","url":null,"abstract":"<div><div>This study investigates the cyclic elasto-plastic behavior of the nickel-based alloy 690 under fully reversed uniaxial strain load at room temperature. Through a series of experiments, it is found that the material undergoes initial cyclic hardening followed by prolonged softening. The strain range effect is also observed, as the rate of cyclic hardening/softening is influenced by strain amplitudes. To capture these behaviors, a nonlinear kinematic hardening rule combined with the strain memory surface is introduced, and the saturated value of backstress is considered as a function of both the accumulated plastic strain and the radius of the memory surface. Subsequently, the backward Euler method and the implicit integration algorithm are applied for numerical implementation. A user material subroutine UMAT is developed for the commercial software ABAQUS. Numerical simulations are conducted on the experiment specimens to validate the constitutive model. The results indicate that the model can describe the cyclic elasto-plastic behavior of the nickel-based alloy 690.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105068"},"PeriodicalIF":2.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552722","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

Experimental and numerical analysis of nonlinear velocity response for a cantilever 悬臂梁非线性速度响应的实验与数值分析

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-27 DOI: 10.1016/j.ijnonlinmec.2025.105067

Nasser Firouzi , Fadi Dohnal , Tobias Gorbach , Tara Farizeh

引用次数: 0

Neural controller for targeting a desired stationary distribution in stochastic systems 随机系统中目标平稳分布的神经控制器

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-27 DOI: 10.1016/j.ijnonlinmec.2025.105058

Wantao Jia , Zhe Jiao , Zhengrong Jin

引用次数: 0

In-plane simultaneous resonance instability behaviors of a fixed arch under a two-frequency radial uniformly distributed excitation 双频径向均布激励下固定拱面内同步共振失稳行为

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-27 DOI: 10.1016/j.ijnonlinmec.2025.105056

Fulin Shen , Zilin Zhong , Xiaobin Xu , Jianhua Li , Qinxi Dong , Jian Deng

{"title":"In-plane simultaneous resonance instability behaviors of a fixed arch under a two-frequency radial uniformly distributed excitation","authors":"Fulin Shen , Zilin Zhong , Xiaobin Xu , Jianhua Li , Qinxi Dong , Jian Deng","doi":"10.1016/j.ijnonlinmec.2025.105056","DOIUrl":"10.1016/j.ijnonlinmec.2025.105056","url":null,"abstract":"<div><div>This paper delves into a theoretical and numerical exploration of the in-plane simultaneous resonance instability behaviors exhibited by a fixed arch subjected to a two-frequency radial uniformly distributed excitation. An intriguing and previously overlooked phenomenon of simultaneous resonance instability in fixed arches has been identified—specifically, the coexistence of superharmonic resonance and combination subharmonic resonance. The in-plane governing equation of motion was derived using Hamilton's principle and subsequently decoupled through the application of the Galerkin method. Employing the method of multiple scales, boundary excitation frequencies at varying amplitudes were determined, establishing dynamic instability zones and distinguishing between stable and unstable regions of the arch. These findings were further validated using both the finite element method and the fourth-order Runge-Kutta technique. The investigation brought to light a fascinating phenomenon wherein the concurrent manifestation of both 2-order superharmonic resonance and 1/2-order combination subharmonic resonance occurs when the sum of two excitation frequencies approaches twice the natural frequency of the arch, with one of them being approximately half of the natural frequency.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105056"},"PeriodicalIF":2.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A magnetorheological elastomer-based hybrid vibration isolation system with semi-active control and quasi-zero stiffness performance 基于磁流变弹性体的半主动控制准零刚度混合隔振系统

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-25 DOI: 10.1016/j.ijnonlinmec.2025.105063

Yu Lin , Guilin Wen , Chengxiang Liu , Junfeng He , Jie Liu

{"title":"A magnetorheological elastomer-based hybrid vibration isolation system with semi-active control and quasi-zero stiffness performance","authors":"Yu Lin , Guilin Wen , Chengxiang Liu , Junfeng He , Jie Liu","doi":"10.1016/j.ijnonlinmec.2025.105063","DOIUrl":"10.1016/j.ijnonlinmec.2025.105063","url":null,"abstract":"<div><div>The quasi-zero stiffness (QZS) vibration isolation system suffers from conflicts between low-frequency and mid-to-high-frequency isolation, despite having outstanding low-frequency vibration isolation performance. Meanwhile, the semi-active control technology based on magnetorheological elastomers (MRE) can achieve good vibration isolation effects over a wide frequency range. However, its ability to isolate low-frequency vibrations is still restricted. To address the challenge, this paper proposes a hybrid vibration isolation system that combines QZS isolation technology with semi-active control technology based on MRE. The hybrid vibration isolation system consists of the QZS vibration isolation unit and the semi-active control unit. The inclined springs provide negative stiffness, while the MRE and linear vertical spring jointly provide positive stiffness. The magneto-mechanical properties of the MRE samples are analyzed, and a phenomenological constitutive model is established. The relationship between the magnetic field and control current in the hybrid system is determined through electromagnetic field simulation. The hybrid system's vibration isolation performance in passive mode as a QZS isolator with nonlinear damping properties is assessed using the harmonic method. The hybrid system's vibration isolation performance under random and harmonic excitations is then examined in semi-active control mode. The findings demonstrate that the hybrid system outperforms traditional QZS isolators in terms of vibration isolation performance in passive mode. Furthermore, it demonstrates excellent performance in the semi-active mode under both harmonic and random excitations, with good wideband low-frequency vibration isolation capabilities.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105063"},"PeriodicalIF":2.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578508","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

Multi-objective optimization of the asymmetric-grinding rail profile for sharply curved tracks on metro line 地铁急弯轨道非对称磨削型线的多目标优化

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-24 DOI: 10.1016/j.ijnonlinmec.2025.105065

Fei Yang , Liang Gao

{"title":"Multi-objective optimization of the asymmetric-grinding rail profile for sharply curved tracks on metro line","authors":"Fei Yang , Liang Gao","doi":"10.1016/j.ijnonlinmec.2025.105065","DOIUrl":"10.1016/j.ijnonlinmec.2025.105065","url":null,"abstract":"<div><div>Rail grinding is an effective strategy to improve the curve negotiation performance of metro vehicles. This paper develops a multi-objective optimization model for the design of the asymmetric-grinding rail profiles. The root-mean-square value of the derailment coefficient and the mean value of the rail wear of high rail are taken as two optimization objectives. A surrogate model, established using the results of the vehicle-track coupled dynamics simulations and non-uniform rail wear predictions, is used to calculate the optimization objectives. The multi-objective particle swarm optimization (MOPSO) model is applied to solve the multi-objective optimization model. The asymmetric-grinding rail profile of a sharp metro line is optimized by using the developed model, and the Pareto front of the multi-objective optimization problem is obtained. The performance of three typical asymmetric-grinding rail profiles in vehicle dynamics and rail wear rate is analyzed by comparing them with those of the original rail profile. The simulation results show that the optimized asymmetric grinding of rail profiles achieves the optimization objectives of reducing both the derailment coefficient and the mean value of rail wear on high rail. Due to the conflicting relationship between the two objective functions, an optimized asymmetric-grinding of rail profiles in the Pareto front that could balance both the wheel-rail safety and rail wear is chosen as the best rail grinding strategy.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105065"},"PeriodicalIF":2.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521258","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

Analysis and control of coexisting attractor transitions in a class of rigid vibro-impact systems 一类刚性冲击系统中共存吸引子过渡的分析与控制

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-24 DOI: 10.1016/j.ijnonlinmec.2025.105066

Guofang Li , Tao Liu , Shaopei Wu , Deyang Li , Wangcai Ding , Zonghong Feng

{"title":"Analysis and control of coexisting attractor transitions in a class of rigid vibro-impact systems","authors":"Guofang Li , Tao Liu , Shaopei Wu , Deyang Li , Wangcai Ding , Zonghong Feng","doi":"10.1016/j.ijnonlinmec.2025.105066","DOIUrl":"10.1016/j.ijnonlinmec.2025.105066","url":null,"abstract":"<div><div>In order to solve the problem that coexisting attractor transition control is not easy to achieve in rigid vibro-impact systems, the coexisting attractors and the transition control of a single-degree-of-freedom vibro-impact system with clearance is explored in this paper. Firstly, the Poincaré map of system and its Jacobi matrix are obtained by constructing the local map. Secondly, the coexistence and transition characteristics between stable and unstable periodic motions are studied by the cell mapping method, the shooting method, and parameter continuation algorithms. Finally, with the boundary point being whether a collision occurs between the controlled system and the target system, a piecewise controller based on Lyapunov stability theory and the backstepping method is proposed to adapt to the rigid vibro-impact system with clearance and multistability coexistence. The controller employs the impact occurrence between the controlled system and the target system as the boundary point. Numerical simulation results demonstrate that the designed controller can effectively control the transition of the attractors.</div></div>","PeriodicalId":50303,"journal":{"name":"International Journal of Non-Linear Mechanics","volume":"174 ","pages":"Article 105066"},"PeriodicalIF":2.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552724","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

A novel weighted averaging operator for frequency analysis of nonlinear free vibrations 非线性自由振动频率分析的加权平均算子

IF 2.8 3区工程技术

International Journal of Non-Linear Mechanics Pub Date : 2025-02-19 DOI: 10.1016/j.ijnonlinmec.2025.105057

Anh Tay Nguyen , Nguyen Ngoc Linh , Nguyen Cao Thang , Nguyen Anh Ngoc , Le Quang Vinh , N.D. Anh

引用次数: 0