IF 2.1 3区工程技术

Meccanica Pub Date : 2025-09-24 DOI: 10.1007/s11012-025-02049-4

Bing Du, Chaoyang Huang, Fenghua Liu, Hailong Cui, Jingyan Wang

{"title":"Evaluation and optimization of wrinkle resistance in plastic forming of bimetal composite sheets under complex boundary conditions","authors":"Bing Du, Chaoyang Huang, Fenghua Liu, Hailong Cui, Jingyan Wang","doi":"10.1007/s11012-025-02049-4","DOIUrl":"10.1007/s11012-025-02049-4","url":null,"abstract":"<p>Metal composite sheets are widely used in transportation and aerospace due to their comprehensive performance. However, given the property differences of heterogeneous metals, interlayer interactions, and complex forming boundary conditions, they are more prone to wrinkling than single-layer sheets, and their wrinkling mechanism is more complicated. To investigate this mechanism and propose an evaluation method for wrinkle resistance, this study conducts wrinkling tests on bimetal composite sheet wedges under complex boundary conditions. A simulation model for wedge wrinkling is developed using the Buckle-Dynamic algorithm with continuum shell elements in ABAQUS, and experimental results validate the model accuracy. The model is used to analyze the relationships between the stress–strain of each metal layer, the position of the stress-neutral layer, and the thickness direction displacement. Consequently, a method for judging the wrinkling of composite sheets is proposed, which takes the bifurcation time of the integral point strain path of the metal layer where the stress-neutral layer is located as the critical wrinkling time. Based on this, the critical wrinkling strain lines of the composite sheets are established, and their slopes are used to characterize and quantify the wrinkle resistance. Research shows that increasing the proportion of the material with lower hardness in the component layers of the composite sheet and the overall thickness of the sheet will both reduce the number of wrinkles, thereby enhancing wrinkle resistance. This study introduces a method for evaluating the wrinkle resistance of composite sheets under complex boundaries and guides the optimization of their performance in forming.</p>","PeriodicalId":695,"journal":{"name":"Meccanica","volume":"60 9","pages":"3103 - 3123"},"PeriodicalIF":2.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248221","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

Improvement of vehicle stability in crosswinds via photovoltaic panels 通过光伏板改善车辆侧风稳定性

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-09-17 DOI: 10.1007/s11012-025-02046-7

Tingting Liu, Hanning Mi, Hongfu Zhang, Daocheng Zhou

引用次数: 0

Experimental validation of the analytic-centre based tension distribution algorithm for cable driven parallel robots 基于分析中心的缆索驱动并联机器人张力分配算法的实验验证

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-09-10 DOI: 10.1007/s11012-025-02044-9

Daria Berretta, Vincenzo Di Paola, Stéphane Caro, Matteo Zoppi

引用次数: 0

Probabilistic risk assessment for heavy duty vehicles rollover under crosswind environment 侧风环境下重型车辆侧翻概率风险评估

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-09-02 DOI: 10.1007/s11012-025-02043-w

Rui Guan, Li Chang

引用次数: 0

An efficient semi-analytical loaded tooth contact analysis method for modified face-gear drive using Rayleigh–Ritz approach 基于瑞利-里兹方法的改进面齿轮传动加载齿接触半解析分析方法

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-08-26 DOI: 10.1007/s11012-025-02041-y

Lei Wang, Linlin Sun, Ning Zhao, Xiaotao An, Bowen Zhang, Jinran Li

{"title":"An efficient semi-analytical loaded tooth contact analysis method for modified face-gear drive using Rayleigh–Ritz approach","authors":"Lei Wang, Linlin Sun, Ning Zhao, Xiaotao An, Bowen Zhang, Jinran Li","doi":"10.1007/s11012-025-02041-y","DOIUrl":"10.1007/s11012-025-02041-y","url":null,"abstract":"<div><p>The loaded tooth contact analysis (LTCA) is a crucial tool for examining the meshing performance of gear systems. Existing LTCA methods for face-gear drives predominantly rely on finite element method (FEM), which is computationally expensive. To overcome this limitation, a semi-analytical LTCA model is proposed. This model is developed based on deformation compatibility and force equilibrium conditions. The Influence Coefficients Method is used to establish the relationship between contact force and deformation. In this approach, the global tooth deformation compliance is calculated using the Rayleigh–Ritz method, while the local contact deformation compliance is derived from the Boussinesq solution. The semi-analytical LTCA model is solved iteratively to obtain key meshing performance characteristics, such as load distribution, contact pattern, load sharing ratio, and time-varying meshing stiffness. The proposed model is compared with FEM, demonstrating excellent agreement and high computational efficiency. Additionally, parametric analyses reveal that the number of teeth on the shaper, the parabola coefficient of profile crowning, and the output torque significantly affect the meshing performance.</p></div>","PeriodicalId":695,"journal":{"name":"Meccanica","volume":"60 9","pages":"3027 - 3045"},"PeriodicalIF":2.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248259","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 modified novel implementation of asymptotic homogenization (NIAH) to model frame-like periodic materials 一种改进的渐近均匀化（NIAH）的新实现来模拟类框架周期材料

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-08-24 DOI: 10.1007/s11012-025-02029-8

Augusto Henrique dos Santos, Pablo Andrés Muñoz-Rojas

{"title":"A modified novel implementation of asymptotic homogenization (NIAH) to model frame-like periodic materials","authors":"Augusto Henrique dos Santos, Pablo Andrés Muñoz-Rojas","doi":"10.1007/s11012-025-02029-8","DOIUrl":"10.1007/s11012-025-02029-8","url":null,"abstract":"<div><p>Modern engineering increasingly requires materials that can meet multiple functional needs. Over the past few decades, structural optimization techniques have been used to design materials by shaping and arranging small building blocks, called representative volume elements (RVEs or unit cells), in a repeating pattern at the microscale. These unit cell designs are often complex and difficult to manufacture. However, with the development of metal additive manufacturing, producing these advanced materials has become feasible. This progress has led to increased research into methods for analyzing porous materials designed using optimization. This paper focuses on analyzing low-density porous metamaterials, where the base structure is modeled using bar or Euler–Bernoulli frame elements. While pinned bar elements are commonly used, they are only reliable for problems involving stretching forces. In real-world applications, additive manufacturing creates structures where joints transmit both moments and torque, making frame elements more suitable than bar elements. To evaluate the effective properties of these materials, asymptotic homogenization techniques are often used, particularly the NIAH variant, which allows commercial software to handle the necessary calculations. Although using rod elements in the NIAH framework is straightforward, using beam elements requires some adjustments, which are explained in this paper. Unlike many other studies, this work specifically addresses how to adapt NIAH for beam elements at the microscale while ensuring that the resulting macroscopic models only include translational movements. The paper also presents a method for defining the base cell geometry to improve accuracy. Finally, the paper compares the performance of bar and frame elements in 2D and 3D lattice periodic metamaterials.</p></div>","PeriodicalId":695,"journal":{"name":"Meccanica","volume":"60 9","pages":"2987 - 3025"},"PeriodicalIF":2.1,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248188","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-stage contact model between fractal rough surfaces based on ellipsoidal asperity deformation 基于椭球粗糙变形的分形粗糙面多阶段接触模型

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-08-19 DOI: 10.1007/s11012-025-02038-7

Linqiang Zhou, Ji Qian

{"title":"Multi-stage contact model between fractal rough surfaces based on ellipsoidal asperity deformation","authors":"Linqiang Zhou, Ji Qian","doi":"10.1007/s11012-025-02038-7","DOIUrl":"10.1007/s11012-025-02038-7","url":null,"abstract":"<div><p>A multi-stage contact model between fractal rough surfaces based on the actual deformation of ellipsoidal asperity is proposed. Firstly, the equations for four deformation modes based on actual deformation of asperity are deduced, and the computational expressions for the contact characteristics of asperity are established. Secondly, the contact behavior of whole surface is divided into five contact stages according to the deformation stages of asperity and the contact degree of surface. Finally, the joint distribution function of base length and eccentricity is introduced, and the multi-stage contact model of surface is established by means of integration. Accordingly, the influences of different parameters (fractal dimension <i>D</i>, fractal roughness <i>G</i> and shape parameters <i>τ</i>, <i>β</i>) on the contact area and force are analyzed. The results show that the fractal dimension has a significant influence on the contact characteristics of surface; the contact area at the same force is related to the roughness of surface; The results obtained from the contact model based on ellipsoidal asperity are smaller than those obtained from the contact model based on spherical asperity. The results of proposed model are compared with the existing models and experiment data to verify the correctness and applicability of present model.</p></div>","PeriodicalId":695,"journal":{"name":"Meccanica","volume":"60 9","pages":"2969 - 2986"},"PeriodicalIF":2.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248183","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 analysis of an elastic plate on a fissured poroelastic half-plane under a moving load 动荷载作用下裂隙孔弹性半平面弹性板的动力分析

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-08-17 DOI: 10.1007/s11012-025-02037-8

Zhenyu Liu, Niki D. Beskou, Edmond V. Muho, Ying Zhou

{"title":"Dynamic analysis of an elastic plate on a fissured poroelastic half-plane under a moving load","authors":"Zhenyu Liu, Niki D. Beskou, Edmond V. Muho, Ying Zhou","doi":"10.1007/s11012-025-02037-8","DOIUrl":"10.1007/s11012-025-02037-8","url":null,"abstract":"<div><p>This paper studies the dynamic response of an elastic concrete plate on a fissured poroelastic rock medium to a moving load under plane strain conditions. The plate is assumed to be thin, isotropic, and linear elastic. The fissured poroelastic rock medium is isotropic, fully saturated with water, and characterized by two types of porosity, one due to fissures separating it into blocks and one due to the pores in those blocks. The load is assumed to be uniformly distributed over a finite length and moves with constant speed. The problem, which describes a case of rigid pavement, is solved analytically/numerically by the complex Fourier series method. Thus, the load and the plate and rock medium displacements are expanded in complex Fourier series with respect to the horizontal coordinate (motion direction) and the time. Upon substitution of these expansions into the equations of motion for the plate and the half-plane rock medium, the corresponding partial differential equations are reduced to algebraic and ordinary differential equations, respectively, which can be easily solved. The resulting response solution is verified by comparison with existing solutions for special cases. Parametric studies are finally conducted for assessing the effects of problem parameters like porosities, permeabilities, thickness of the elastic plate, and vehicle load speed on the response of the plate.</p></div>","PeriodicalId":695,"journal":{"name":"Meccanica","volume":"60 9","pages":"2947 - 2968"},"PeriodicalIF":2.1,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248225","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 full characterization of the critical stability curves/surfaces of linear systems with multiple delays 多时滞线性系统临界稳定性曲线/曲面的完整表征

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-08-14 DOI: 10.1007/s11012-025-02035-w

Song Liang, Zaihua Wang

{"title":"A full characterization of the critical stability curves/surfaces of linear systems with multiple delays","authors":"Song Liang, Zaihua Wang","doi":"10.1007/s11012-025-02035-w","DOIUrl":"10.1007/s11012-025-02035-w","url":null,"abstract":"<div><p>The stability analysis of a linear system with the multiple delays as parameters in given intervals is not a new but hard topic in general, for which a key step is to find out all the critical stability curves/surfaces in the parameter space. In this paper, the critical stability condition is regarded as a complex equations depending nonlinearly on the delays, and it is solved in three parts: (1) The solvability of the nonlinear equation; (2) The representation of the solutions; 3) Numerical algorithms for finding the solutions. For the solvability, a necessary and sufficient condition in terms of a delay-independent inequality with clear geometrical meaning has been derived from the critical stability condition in the form of vector equation. For the representation, the critical delays in nested form are expressed explicitly in terms of a number of hypersurfaces, all the quantities have clear geometrical meaning. Based on the nested representation, two effective algorithms are proposed for finding the solutions, and illustrated with simple examples. The main results not only generalize the previous ones for systems with two delays and three delays of the nondegenerate cases, but also add new findings for the degenerated cases which have important impact on the stability of the time-delay systems.</p></div>","PeriodicalId":695,"journal":{"name":"Meccanica","volume":"60 8","pages":"2437 - 2450"},"PeriodicalIF":2.1,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230457","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

An effective reduction method with Caughey damping for spurious oscillations in dynamic problems 基于Caughey阻尼的有效减振方法

IF 2.1 3区工程技术

Meccanica Pub Date : 2025-08-12 DOI: 10.1007/s11012-025-02036-9

Dániel Serfözö, Balázs Pere

引用次数: 0

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