{"title":"Multi-objective optimal design of double tuned mass dampers for structural vibration control","authors":"Huong Quoc Cao, Ngoc-An Tran","doi":"10.1007/s00419-023-02376-6","DOIUrl":"10.1007/s00419-023-02376-6","url":null,"abstract":"<div><p>A double tuned mass damper (DTMD) for suppressing oscillations of civil structures is proposed in this study. DTMD is a combination of an undamped TMD and a smaller TMD. The impact of parameters on the essential characteristics, as well as the vibration absorption capacity of DTMD, is investigated. Using genetic algorithms (GA), the optimum parameters of DTMD are determined by minimizing the peak dynamic magnification factor of structural responses for a wide range of excitation frequencies. The effectiveness and robustness of DTMD are also compared with those of the optimized TMD having a similar weight as the DTMD. Furthermore, multi-objective optimization designs of DTMD (for both two-objective and three-objective) are also developed here. This study indicates that the DTMD is more effective than a single TMD. If keeping a similar efficiency to that of an optimized TMD, the optimum DTMD has a broader domain for choosing the frequency and damping ratio. In this sense, a DTMD is much more robust than a single TMD.\u0000</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 5","pages":"2129 - 2144"},"PeriodicalIF":2.8,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00419-023-02376-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4583958","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}
Vu Ngoc Tru, Nguyen Văn Long, Tran Minh Tu, Vu Thi Thu Trang
{"title":"Static analysis of functionally graded saturated porous plate rested on pasternak elastic foundation by using a new quasi-3D higher-order shear deformation theory","authors":"Vu Ngoc Tru, Nguyen Văn Long, Tran Minh Tu, Vu Thi Thu Trang","doi":"10.1007/s00419-023-02397-1","DOIUrl":"10.1007/s00419-023-02397-1","url":null,"abstract":"<div><p>A new quasi-3D higher-order shear deformation theory is introduced to investigate the static behaviour of functionally graded saturated porous (FGSP) plate resting on Pasternak’s elastic foundation for the first time. The governing equations are derived from eleven-unknowns higher-order shear deformation theory and using Biot’s poroelasticity theory taking into account transverse shear stress-free boundary conditions on the top and bottom surface of the plate. Three porosity distribution patterns of FGSP materials namely uniform, non-uniform symmetric and non-uniform asymmetric are considered. Navier’s technique is employed to obtain an analytical solution. The present results are compared with 3D and higher-order solutions available in the existing literature to validate the proposed model. Parametric studies show efficiency of proposed quasi-3D plate theory in analyzing FGSP thick plates, and exploring the effects of material, geometrical and elastic foundation parameters, as well as fluid compressibility, stretching effect on transverse displacement and stress field.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2565 - 2583"},"PeriodicalIF":2.8,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4548064","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}
{"title":"Study on chaotic characteristics of horizontal nonlinear roller system with fractional order","authors":"Li Jiang, Tao Wang, Qing-Xue Huang, Wei Shi","doi":"10.1007/s00419-023-02389-1","DOIUrl":"10.1007/s00419-023-02389-1","url":null,"abstract":"<div><p>In this paper, Duffing oscillator is introduced to study the chaotic characteristics of nonlinear roller system in detail. Firstly, the horizontal nonlinear dynamics equations of the roller system with fractional derivative terms were established . Secondly, amplitude–frequency characteristics of the system by the multi-scale method were solved and the influence relationship of various parameters on the system was discussed. Thirdly, according to the perturbation theory and the Melnikov method, the necessary conditions were studied for generating chaos under the Smale horseshoe meaning of the roller system. Finally, the coincidence of the analytical and numerical solutions was verified . And the chaotic characteristics of the system are studied by numerical simulation.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2435 - 2447"},"PeriodicalIF":2.8,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4838853","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}
Mohammad Hadi Fasihi Harandi, Ali Loghmani, Salar Attarilar
{"title":"Backpack with a nonlinear suspension system designed for low walking speeds","authors":"Mohammad Hadi Fasihi Harandi, Ali Loghmani, Salar Attarilar","doi":"10.1007/s00419-023-02391-7","DOIUrl":"10.1007/s00419-023-02391-7","url":null,"abstract":"<div><p>The most common injuries caused by carrying a backpack used by different strata of society are caused by the dynamic force applied to the body by the backpack. The application of vibration isolation is one of the proposed methods to reduce this force. This study has introduced a nonlinear mechanism to reduce the dynamic forces applied to the body, considering the shortcomings of common linear vibration isolators. Low dynamic stiffness and high static stiffness are the advantages of the proposed system. This feature leads to a much lower natural frequency in backpacks compared to conventional systems; thus, it will be effective at low speeds. High static stiffness prevents the initial deformation due to the backpack mass. This mechanism includes one horizontal and two oblique springs. The dynamic equations of this mechanism are extracted using the Newton method, and the analytical results are compared to those obtained from Adams software. Then, the design parameters for the proposed backpack are optimized using the transmission force objective function and the results are compared with the previous studies.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2465 - 2481"},"PeriodicalIF":2.8,"publicationDate":"2023-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00419-023-02391-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4471718","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}
Zhuang-zhuang Wang, Teng Wang, Yan-mei Ding, Lian-sheng Ma
{"title":"Free vibration analysis of functionally graded porous plates based on a new generalized single-variable shear deformation plate theory","authors":"Zhuang-zhuang Wang, Teng Wang, Yan-mei Ding, Lian-sheng Ma","doi":"10.1007/s00419-023-02396-2","DOIUrl":"10.1007/s00419-023-02396-2","url":null,"abstract":"<div><p>A generalized single-variable shear deformation plate theory (GSSDPT) is proposed. Compared with other single-variable vibration theories, GSSDPT discards the assumption that the shear component has zero effect on the bending moment. This makes the simplification process more reasonable. GSSDPT takes into account the inhomogeneous distribution of material properties, which makes it suitable for many new composite materials, such as functionally graded materials. Compared with higher-order shear deformation plate theories and first-order shear deformation plate theory, GSSDPT has only one governing equation, which significantly simplifies the calculation. GSSDPT takes into account the parabolic distribution of shear stress in the thickness direction. Therefore, it does not require shear correction. In this paper, the free vibration behavior of functionally graded plates under three pore distribution forms is investigated. The convenience and effectiveness of GSSDPT are verified by comparing it with existing literature. In addition, the effects of the porosity parameter, side-to-thickness ratio, aspect ratio, power-law index, and pore distribution forms are investigated based on GSSDPT.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2549 - 2564"},"PeriodicalIF":2.8,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4429367","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}
Shuai Qi, Pengchong Zhang, Jie Ren, Wei Ma, Jing Wang
{"title":"Precise solutions of dynamic problems in stratified transversely isotropic piezoelectric materials","authors":"Shuai Qi, Pengchong Zhang, Jie Ren, Wei Ma, Jing Wang","doi":"10.1007/s00419-023-02386-4","DOIUrl":"10.1007/s00419-023-02386-4","url":null,"abstract":"<div><p>Built upon the precise integration method (PIM) and dual vector technology, complete formulae for components of the electro-mechanical field in linearly elastic, stratified transversely isotropic piezoelectric materials subjected to dynamic axisymmetric mechanical and electrical loadings are acquired. It is assumed that between dissimilar adjacent layers perfect contact conditions are satisfied. Uniform axisymmetric forces exerted over a circular or semi-circular patch in the frequency domain are located at the exterior or interface of the layered system. Additionally, the introduced methodology is universal enough to account for any number of strata. Starting with partial differential equations of motion related to elastic displacements and the electric potential, and aided by the Hankel integral transformation and the technique of dual vector, a first-order ordinary differential governing matrix equation in the transformed domain is obtained. As a highly precise approach, the PIM is provided to compute the ordinary differential key equation for constructing the global stiffness matrix of the multilayered piezoelectric materials based on the continuous and compatible conditions between adjacent strata. As a result, the mechanical and electrical components with any conceived accuracy are gained. By dint of inverting the Hankel integral transformation, the dynamic axisymmetric electro-mechanical solutions are then transferred into the physical domain. Comparisons with finite element results implemented by the commercial software validate the accuracy and feasibility of the employed approach. Other numerical exercises are carried out to portray the role of parameters, form of prescribed loadings, frequency of excitation and thickness of layers on the elastodynamic axisymmetric solutions of the stratified piezoelectric materials.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2351 - 2388"},"PeriodicalIF":2.8,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00419-023-02386-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4589780","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}
{"title":"Reflection of plane waves from the stress-free boundary of a nonlocal elastic solid half-space containing double porosity","authors":"Davinder Kumar, Dilbag Singh, Sushil K. Tomar, Sohichi Hirose, Takahiro Saitoh, Akira Furukawa, Taizo Maruyama","doi":"10.1007/s00419-023-02377-5","DOIUrl":"10.1007/s00419-023-02377-5","url":null,"abstract":"<div><p>Reflection phenomena of a set of coupled longitudinal waves/shear wave striking obliquely against the mechanically stress-free boundary surface of a uniform nonlocal elastic solid half-space with double porosity structure have been investigated. Employing the appropriate nonlocal stress-free boundary conditions at the surface, the formulae for reflection coefficients and their corresponding energy ratios have been derived for the dissipative and non-dissipative models. Their variations have been computed against the angle of incidence for a specific model. It is found that all the reflection coefficients depend upon the presence of the nonlocality, porosities of both types, frequency and angle of incidence. Their impact on various coefficients is also studied numerically and depicted graphically.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 5","pages":"2145 - 2173"},"PeriodicalIF":2.8,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00419-023-02377-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4263088","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}
{"title":"Experimental study of optimized beginner-level wingsuit","authors":"Mohsen Nazemian Alaei, Mohammad Sadegh Valipour","doi":"10.1007/s00419-023-02381-9","DOIUrl":"10.1007/s00419-023-02381-9","url":null,"abstract":"<div><p>Among extreme sports are wingsuits, which influence the safety and quality of an athlete’s flight through their reliability, ergonomics, and aerodynamics. Aerodynamic efficiency and wing surface reinforcement are due to ridges aligned with flow directions. Wrinkles appeared as a result of these. The created uneven surfaces have a significant effect on the performance, the arrangement and geometric shape of the surface can be useful or destructive in different flight situations. Geometric changes on the surface are one of the passive flow control methods. In this article, the geometric structure of these wavy protrusions and their effects on the flight performance of the wingsuit has been investigated. Flow structure is shown using the tuft flow visualization method, which shows the effects of geometric changes on the model in flight angles of attack (AOAs). The wingsuit model was also tested under different AOAs, and the best performance was achieved at AOA = 10<i>°</i> with seven wave ridges arranged on it. Based on the results of this study, we have evaluated the effect of the AOA, the side angle, and the Reynolds number (Re) on the performance of the model. \u0000Please confirm if the author names are presented accurately and in the correct sequence (given name, middle name/initial, family name). Author 1 Given name: [Mohsen Nazemian] Last name [Alaei] and Author 2 Given name: [Mohammad Sadegh] Last name [Valipour]. Also, kindly confirm the details in the metadata are correct.It is checked and there is no problem.Please check the edit made in the article title.It is checked and there is no problem.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2253 - 2272"},"PeriodicalIF":2.8,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4263073","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}
{"title":"Fracture toughness analysis of interlocked brick and mortar structure considering the anisotropic behavior","authors":"Yunqing Nie, Dongxu Li, Qing Luo","doi":"10.1007/s00419-023-02387-3","DOIUrl":"10.1007/s00419-023-02387-3","url":null,"abstract":"<div><p>The biological materials often display unique combinations of strength and toughness, which can provide an excellent prototype for designing advanced biomimetic materials. However, there still lacks a deep understanding in the relationship between geometric structure and material property. This paper established an crack-bridging model combining with the anisotropic stiffness properties, to reveal the crack-bridging toughening mechanism of interlocked brick and mortar structure. Then, the model is used to analysis the effect of geometric sizes, material parameters and interfacial properties to fracture toughness. Parametric studies demonstrates that the interlocking angle has a limited effect on fracture toughness. And increasing aspect ratio of platelets and elastic modulus ratio of stiff platelets and soft interface can greatly enhance the fracture resistance. In addition, the dissipating energy of the soft interface also has a positive contribution to the fracture toughness. This result potentially provides guideline to the design and optimization of novel biological materials with high strength and high ductility.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 6","pages":"2389 - 2409"},"PeriodicalIF":2.8,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00419-023-02387-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4266432","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}
Dhwani Sheth, V. O. Thomas, Niraj M. Pathak, Elbaz I. Abouelmagd
{"title":"Analysis of exterior resonant periodic orbits in the photogravitational ERTBP","authors":"Dhwani Sheth, V. O. Thomas, Niraj M. Pathak, Elbaz I. Abouelmagd","doi":"10.1007/s00419-023-02374-8","DOIUrl":"10.1007/s00419-023-02374-8","url":null,"abstract":"<div><p>In this study, the autonomous elliptical restricted three-body problem is used for obtaining Poincaré surface of sections in the photogravitational Sun–Saturn system. We have found the first-order exterior resonant orbits using the numerical technique of PSS and analysed the effects of eccentricity of the primaries’ orbit, radiation pressure and Jacobi constant on locations, periods, eccentricities and semi-major axes of resonant periodic orbits. It is observed that these orbits surround both primaries for all values of eccentricity of the primaries’ orbit and remain in the first-order exterior resonance with the Saturn.</p></div>","PeriodicalId":477,"journal":{"name":"Archive of Applied Mechanics","volume":"93 5","pages":"2097 - 2112"},"PeriodicalIF":2.8,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4511577","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}