Material Design & Processing Communications最新文献_第4页

Dynamic analysis of a Drum Charger: Large amplitude vibrations of clamped circular thin plate on a linear foundation 鼓式加料机的动力分析:固定在线性基础上的圆形薄板的大振幅振动

Material Design & Processing Communications Pub Date : 2021-08-17 DOI: 10.1002/mdp2.265

Fabio Alberti, Giacomo Risitano, Lorenzo Scappaticci, Lucas Benoit-Maréchal, Danilo D'Andrea

{"title":"Dynamic analysis of a Drum Charger: Large amplitude vibrations of clamped circular thin plate on a linear foundation","authors":"Fabio Alberti, Giacomo Risitano, Lorenzo Scappaticci, Lucas Benoit-Maréchal, Danilo D'Andrea","doi":"10.1002/mdp2.265","DOIUrl":"10.1002/mdp2.265","url":null,"abstract":"The Impulse Drum Charger® (IDC) represents a valid and innovative alternative in the field of the superchargers, in particular when the available space is limited, such as in motorcycles. In fact, with respect to the traditional one, which uses turbine-compressor system for engine supercharging, the IDC exploit the deflection of an elastic membrane-spring system to generate overpressure at the intake from the pressure waves generated by the exhaust gases. In this way, the aim of this work is the development of a mathematical model of the membrane-spring system, both realized in 102-RGUD600 glass fiber composite (PA matrix), of a Drum Charger® using Von Karman theory with Berger's approximation. Focusing on the central deflection of the membrane in time and frequency domain, the derived models reproduces with good accuracy the results of the complete finite-element simulations computed with Ansys™, especially in the higher frequencies. Moreover, in order the system work properly, the spring behavior must maintain in linear-elastic range. Hence, a three-point bending test of the spring was carried out, following the specifications in ASTM (D790-03), in order to verify the force-displacement linear relation. The numerical simulations shown excellent agreement with the force-displacement curve observed in the experimental tests.","PeriodicalId":100886,"journal":{"name":"Material Design & Processing Communications","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/mdp2.265","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90375751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental testing of two short-fiber reinforced composites: PPA-GF33 and PPS-GF40 两种短纤维增强复合材料PPA-GF33和PPS-GF40的实验测试

Material Design & Processing Communications Pub Date : 2021-08-12 DOI: 10.1002/mdp2.264

Dan Micota, Alexandru Isaincu, Liviu Marşavina

引用次数: 3

Preliminary study on deformation behaviors of spray droplet impacting on nonrigid deposited layer 喷雾液滴冲击非刚性沉积层变形行为的初步研究

Material Design & Processing Communications Pub Date : 2021-08-02 DOI: 10.1002/mdp2.263

Fuyang Cao, Lei Yu, Lunyong Zhang, Hongxian Shen, Sida Jiang, Xu Gu, Heqian Song, Zhiliang Ning, Yongjiang Huang, Jianfei Sun

{"title":"Preliminary study on deformation behaviors of spray droplet impacting on nonrigid deposited layer","authors":"Fuyang Cao, Lei Yu, Lunyong Zhang, Hongxian Shen, Sida Jiang, Xu Gu, Heqian Song, Zhiliang Ning, Yongjiang Huang, Jianfei Sun","doi":"10.1002/mdp2.263","DOIUrl":"10.1002/mdp2.263","url":null,"abstract":"Spray forming technology has been adopted to prepare essential castings in various industry fields. Understanding what happen during the impaction of droplet on deposited layer is critical to optimize spray forming processes and so improve the final casting quality. The present work investigated the morphology evolution of droplet and deposited layer during impaction, with particularly emphasis on the nonrigid feature of deposited layer in practical spray forming. The results demonstrate that the deposited layer would suffer obvious deformation under the impaction of flighting droplet, which produce puddle-like structure on the deposited layer. The droplet spreading process would be suppressed by this puddle-like structure when the droplet temperature is not high enough, which might introduce gap between the droplet and the deposited layer, so might cause tiny holes in the final casting. Moreover, the simulation results suggest that multiple droplet impaction might cause column structure on the deposited layer, this would seriously increase the surface roughness of the final casting. The investigations hint that the mechanical properties of deposited layer should be considered when studying the microstructure evolution and mechanism of spray forming casting.","PeriodicalId":100886,"journal":{"name":"Material Design & Processing Communications","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/mdp2.263","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77228148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 constitutive structural parameter cb for the work hardening behavior of additively manufactured Ti-6Al-4V 增材制造Ti-6Al-4V加工硬化性能的本构参数cb

Material Design & Processing Communications Pub Date : 2021-07-21 DOI: 10.1002/mdp2.262

Alan F. Jankowski

引用次数: 1

On the significance of diffuse crack width self-evolution in the phase-field model for residually stressed brittle materials 论残余应力脆性材料相场模型中弥散裂纹宽度自演化的意义

Material Design & Processing Communications Pub Date : 2021-07-12 DOI: 10.1002/mdp2.261

Enrico Salvati, Francesco Menegatti, Manish Kumar, Marco Pelegatti, Alessandro Tognan

{"title":"On the significance of diffuse crack width self-evolution in the phase-field model for residually stressed brittle materials","authors":"Enrico Salvati, Francesco Menegatti, Manish Kumar, Marco Pelegatti, Alessandro Tognan","doi":"10.1002/mdp2.261","DOIUrl":"10.1002/mdp2.261","url":null,"abstract":"The Phase-Field method is an attractive numerical technique to simulate fracture propagation in materials relying on Finite Element Method. Its peculiar diffuse representation of cracks makes it suitable for a myriad of problems, especially those involving multiple physics and complex-shaped crack patterns.Recent literature provided linear relationships between the width of the diffuse crack and the material intrinsic fracture toughness, through a material characteristic length. However, lately, it was shown how the existence of a residual stress field can affect the represented crack width even for fully homogeneous materials, in terms of toughness.In this short note, the authors tried to shed some light on the factors influencing the width of the diffuse crack representation. By simulating crack propagation in several residually stressed brittle materials, it was shown how the width of the diffuse crack is affected by the ratio between the driving force - due to the externally applied load - and the driving force required to propagate the crack. In other words, the diffuse crack extent can be linked to the degree of crack propagation stability/instability. Monitoring the evolution of the studied quantity can be of great interest to rapidly assess crack instability circumstances, under displacement control.","PeriodicalId":100886,"journal":{"name":"Material Design & Processing Communications","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/mdp2.261","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79024747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Effect of tool size on AA6061-T6 double-sided friction stir welds 刀具尺寸对AA6061-T6双面搅拌摩擦焊缝的影响

Material Design & Processing Communications Pub Date : 2021-07-06 DOI: 10.1002/mdp2.259

Ashu Garg, Anirban Bhattacharya

引用次数: 3

Charpy impact properties and numerical modeling of polycarbonate composites 聚碳酸酯复合材料的夏比冲击性能及数值模拟

Material Design & Processing Communications Pub Date : 2021-07-02 DOI: 10.1002/mdp2.260

Tamas Krausz, Iulian-Ionut Ailinei, Sergiu Valentin Galatanu, Liviu Marsavina

{"title":"Charpy impact properties and numerical modeling of polycarbonate composites","authors":"Tamas Krausz, Iulian-Ionut Ailinei, Sergiu Valentin Galatanu, Liviu Marsavina","doi":"10.1002/mdp2.260","DOIUrl":"10.1002/mdp2.260","url":null,"abstract":"Polycarbonate composites are widely spread in many industries, for product manufacturing. Although these materials are being used with high fidelity, their mechanical properties will highly depend on manufacturing processes, fiber orientations with respect to external loads, type of loading, environmental conditions, and so forth. This paper presents the Charpy impact behavior of three polycarbonate grades, in notched and unnotched conditions, as follows: Makrolon 2405—unreinforced polycarbonate, Makrolon 9415—polycarbonate with 10% glass fiber, and Makrolon 8035—polycarbonate with 30% glass fiber. The experimental measurements clearly demonstrated the effect of the fiber content on the impact strength of the material: as the fiber ratio increases, the impact strength decreases, exhibiting brittle behavior. The impact characterization of the notched specimens can facilitate the material selection for applications with higher geometrical complexities, where stress concentrators cannot be eliminated. In addition, the material models obtained through correlations could help increase simulation accuracy and speed up product development cycles.","PeriodicalId":100886,"journal":{"name":"Material Design & Processing Communications","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/mdp2.260","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74496593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

On the effect of the node and building orientation on the fatigue behavior of L-PBF Ti6Al4V lattice structure sub-unital elements 节点和构建方向对L-PBF Ti6Al4V晶格结构亚单元元件疲劳行为的影响

Material Design & Processing Communications Pub Date : 2021-06-30 DOI: 10.1002/mdp2.258

Simone Murchio, Michele Dallago, Andrea Rigatti, Valerio Luchin, Filippo. Berto, Devid Maniglio, Matteo Benedetti

引用次数: 6

Correlation between as-designed and as-built Young's modulus of cubic regular, cubic irregular, and trabecular cellular materials 设计和建造的立方规则、立方不规则和小梁细胞材料的杨氏模量之间的关系

Material Design & Processing Communications Pub Date : 2021-06-22 DOI: 10.1002/mdp2.257

Sunil Raghavendra, Alberto Molinari, Gianluca Zappini, Matteo Benedetti

引用次数: 0

Printing and characterization of three-dimensional high-loaded nanocomposites structures 三维高载荷纳米复合材料结构的打印与表征

Material Design & Processing Communications Pub Date : 2021-06-05 DOI: 10.1002/mdp2.256

Corrado Sciancalepore, Federica Bondioli, Massimo Messori, Daniel Milanese

引用次数: 2