Curved and Layered Structures最新文献_第10页

Micro-buckling of carbon fibers in shape memory polymer composites under bending in the glass transition temperature region 形状记忆聚合物复合材料中碳纤维在玻璃化转变温度区弯曲下的微屈曲

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0009

N. Tiwari, A. Shaikh

引用次数: 3

Target metric and Shell Shaping 目标度量和壳体成形

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0002

G. R. Argento, S. Gabriele, L. Teresi, V. Varano

引用次数: 1

An overview of the natural force density method and its implementation on an efficient parametric computational framework 概述了自然力密度法及其在高效参数化计算框架上的实现

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0005

Márcio S. de Souza, R. M. Pauletti

引用次数: 3

Patterns for gridshells with negligible geometrical torsion at nodes 节点几何扭转可忽略的网格壳图形

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0014

X. Tellier, Romane Boutillier, C. Douthe, O. Baverel

{"title":"Patterns for gridshells with negligible geometrical torsion at nodes","authors":"X. Tellier, Romane Boutillier, C. Douthe, O. Baverel","doi":"10.1515/cls-2021-0014","DOIUrl":"https://doi.org/10.1515/cls-2021-0014","url":null,"abstract":"Abstract Curved envelope structural building envelopes have been quite popular in architecture in the past decades, and pose many challenges in their design, manufacturing and planning. In gridshells, a popular structural morphology for curved structure, designers will often strive to orient beams such that their top face is parallel to the envelope surface. However, this tends to induce geometrical torsion along the beam centerline, which complexifies significantly the manufacturing of the connection nodes or of the beams themselves. It is well known that such issue can be avoided by aligning beams with principal curvature directions of the envelope surface, thus yielding a quadrangular paneling. In this article, we study how other types of patterns (non-quadrangular) can be used to design torsion-free grid-shells. Based on asymptotic considerations, we derive a set of geometrical rules which, if fulfilled by a pattern, insure that a surface can be covered by this pattern with negligible torsion and limited deviation of beams from surface normals. A wide variety of patterns fulfill these rules, offering interesting possibilities for the design of curved architectural envelopes (Figure 1) is shown. As these rules are based on first order asymptotic analysis, we perform global validation on case studies. One main application is for structures in which face planarity is not necessary, for example ones cladded with ETFE cushions.","PeriodicalId":44435,"journal":{"name":"Curved and Layered Structures","volume":"8 1","pages":"147 - 156"},"PeriodicalIF":1.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cls-2021-0014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44748361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Design of a modular exhibition structure with additive manufacturing of eco-sustainable materials 采用生态可持续材料增材制造的模块化展览结构设计

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0019

S. Invernizzi, A. Bertetto, Federico Ciaccio, Paolo Nicola

{"title":"Design of a modular exhibition structure with additive manufacturing of eco-sustainable materials","authors":"S. Invernizzi, A. Bertetto, Federico Ciaccio, Paolo Nicola","doi":"10.1515/cls-2021-0019","DOIUrl":"https://doi.org/10.1515/cls-2021-0019","url":null,"abstract":"Abstract In this paper the mechanical characteristics of an innovative bioplastic material, the HBP® -HempBioPlastic® filament, is investigated. HBP® was recently patented by an Italian company Kanésis that focused its activity on nature-derived materials. The filaments are the upshot of an original process allowing to reuse the surplus of the agricultural supply chains and transform it into new sustainable materials. At first, the 3D printed HBP® samples were tested in tensile tests according to the ASTMD638 standard and monitored in term of deformations by the Digital Image Correlation techniques (DIC) in order to evaluate the stress-strain behavior of different HBP® textures under loading. In addition, using the HBP® and the results coming from the experimental campaign, the design of an exhibition pavilion was proposed. The pavilion was modelled starting from the geometric construction of the fullerene. The supporting modular structure is combined by HBP® modular elements, that can be produced by 3D printing or moulding. Finally, in order to demonstrate the feasibility of the proposed pavilion, a linear finite element analysis is presented on the base of the experimentally determined mechanical properties of HBP® elements, under the effects of wind and seismic environmental actions.","PeriodicalId":44435,"journal":{"name":"Curved and Layered Structures","volume":"8 1","pages":"196 - 209"},"PeriodicalIF":1.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cls-2021-0019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43331245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Out-of-plane local mechanism analysis with finite element method 平面外局部机构的有限元分析

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0012

R. Spagnuolo

引用次数: 0

Form-finding of pierced vaults and digital fabrication of scaled prototype 穿孔拱顶的寻形及比例样机的数字化制作

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0020

A. Bertetto, Federico Riberi

{"title":"Form-finding of pierced vaults and digital fabrication of scaled prototype","authors":"A. Bertetto, Federico Riberi","doi":"10.1515/cls-2021-0020","DOIUrl":"https://doi.org/10.1515/cls-2021-0020","url":null,"abstract":"Abstract The new serious consideration to masonry and non-metallic structures evidenced their direct prospective to be, even in the present days, advanced architectural and engineering solutions. In the present paper, a form finding for a cement based tessellated pierced vault is studied. The multi-body rope approach (MRA) was used to define compression-only vault optimal shapes. Successively, the thrust network analysis (TNA) was implemented by Rhino-vault for a further validation of the shape and the definition of different tessellation meshes of the surfaces, according to different hole pattern configuration. Different piercing percentage of the vaults were considered and compared for the best solution identification. In addition, the geometrical solutions were analyzed by means of global stability analysis, taking into account the different positions of the holes. Furthermore, 3D printing with a Fuse Deposition Modeling (FDM) technique in polylactide (PLA) material (completely eco-friendly) is used for the construction of the formworks of the cement based blocks (dowels) useful for the assembly of a vault scaled prototype. The prototype of the vault, characterized by a certain piercing percentage was subjected to different loading conditions and monitored by a non-contact device based on the Digital Image Correlation (DIC) technique. The 3D-DIC was performed to recognize the structural behavior during the loading process of the model (prototype). DIC measurements were used to recognize in advance the critical condition of the vault under loading and the displacement measurements were correlated to the different loading phases up to the collapse condition.","PeriodicalId":44435,"journal":{"name":"Curved and Layered Structures","volume":"8 1","pages":"210 - 224"},"PeriodicalIF":1.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cls-2021-0020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44066066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Stress analysis of infinite laminated composite plate with elliptical cutout under different in plane loadings in hygrothermal environment 水热环境下不同平面载荷下椭圆切口无限层合复合材料板的应力分析

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0001

A. Magar, A. Lal

引用次数: 2

Folded surface elements coupled with planar scissor linkages: A novel hybrid type of deployable structures 折叠面单元与平面剪刀连杆耦合:一种新型混合可展开结构

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0013

Evangelia Vlachaki, K. Liapi

{"title":"Folded surface elements coupled with planar scissor linkages: A novel hybrid type of deployable structures","authors":"Evangelia Vlachaki, K. Liapi","doi":"10.1515/cls-2021-0013","DOIUrl":"https://doi.org/10.1515/cls-2021-0013","url":null,"abstract":"Abstract Origami folding structures can find significant applications in the general area of building design, as they can be lightweight and deployable. An inherent property of folded surfaces, which is related to the degrees of freedom of each origami crease pattern, is form flexibility. Therefore, when building-scale applications are considered, in many instances, the folded surfaces, in order to become stiff and load-bearing, need to be constrained. A study of different types of deployable structures has led to the observation that in planar scissor linkages, hinges and pivots follow the same deployment path in space, as sets of vertices in certain origami structures. Due to the similarities in their kinematic behavior, selected origami patterns and scissor linkages can function as effective kinematic pairs, leading to structures able to transform in a controlled manner through a wide range of possible spatial configurations. A few examples of combining these two types of structures already exist [1–3]. In this paper a systematic approach for coupling origami crease patterns characterized by biaxial and rotational symmetry, with translational, polar and angulated scissor linkages, towards the development of novel forms of deployable structures, has been attempted. For the design and evaluation of the kinematic performance of the developed new structures, existing geometric modeling and calculation methods, parametric and simulation processes, as well as testing with physical models have been used. It is anticipated that research in this direction will lead to promising novel hybrid types of deployable structures.","PeriodicalId":44435,"journal":{"name":"Curved and Layered Structures","volume":"8 1","pages":"137 - 146"},"PeriodicalIF":1.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cls-2021-0013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47861711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Influence of pattern anisotropy on the structural behaviour of free-edge single-layer gridshells 模式各向异性对自由边单层网壳结构性能的影响

IF 1.5

Curved and Layered Structures Pub Date : 2021-01-01 DOI: 10.1515/cls-2021-0011

F. Venuti

{"title":"Influence of pattern anisotropy on the structural behaviour of free-edge single-layer gridshells","authors":"F. Venuti","doi":"10.1515/cls-2021-0011","DOIUrl":"https://doi.org/10.1515/cls-2021-0011","url":null,"abstract":"Abstract Free-edge gridshells represent the majority of built gridshells. Indeed, the gridshell reference geometry usually needs to be trimmed in order to provide building access or to insert the gridshell within an existing building, giving rise to one or more elastic boundaries. Despite the current design practice, so far a very limited number of scientific studies has been devoted to investigate the influence of elastic boundaries on the overall structural behaviour of gridshells. This paper focuses on the effects of the orientation of the boundary structure with respect to the grid direction. This is done by studying the buckling behaviour of an ideal single-layer steel gridshell, for different grid layout (quadrangular, hybrid, triangular) and orientation. The results of the parametric study demonstrate that the sensitivity of free-edge single-layer gridshells to the free-edge orientation strongly depends on the grid pattern. In particular, isotropic gridshells have shown an almost negligible influence of the free-edge orientation in terms of buckling load, in opposition to orthotropic gridshells. Moreover, the change in free-edge orientation induces significant variations of the global structural stiffness for all the layouts, resulting in possibly unacceptable displacements in service conditions.","PeriodicalId":44435,"journal":{"name":"Curved and Layered Structures","volume":"8 1","pages":"119 - 129"},"PeriodicalIF":1.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cls-2021-0011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43219945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6