VIII Conference on Mechanical Response of Composites最新文献_第2页

Towards Controlled Peeling as a Process to Recover Reusable Organosheet Laminae 控制剥离作为回收可重复使用的有机薄片的过程

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.050

S. Arnold-Keifer, M. Imbert, N. Gross, M. May

{"title":"Towards Controlled Peeling as a Process to Recover Reusable Organosheet Laminae","authors":"S. Arnold-Keifer, M. Imbert, N. Gross, M. May","doi":"10.23967/composites.2021.050","DOIUrl":"https://doi.org/10.23967/composites.2021.050","url":null,"abstract":"Organosheets are multi-layer thermoplastic composites rapidly gaining interest in the automotive industry due to their ability to replace metallic sheets in lightweight applications. However, the current recycling approach for these materials mainly consists in strongly damaging mechanical processing such as grinding or shredding [1]. This leads to the loss of fibre length and alignment, which were causing the high mechanical properties of the original material. Therefore, the recycled material cannot be reused for the same application. However, the thermoplastic composites feature the major advantage of being reprocessable which would for example enable to reuse laminae (in polymer embedded unitary reinforcement layers) for the same application or as reinforcing patches if they could be recovered without significant damage from the multi-layer structure. In this context, the motivation of the presented work is to use a fracture mechanics framework to design a new high-quality recycling process based on the controlled delamination of organosheet laminae. The focus of this work is the use of peeling to recover minimally damaged laminae. To reach this goal, an analytical model describing the peeling process, accounting for the cohesive zone ahead of the crack tip as well as for the loading state and damage in the peeling arm is developed. The model is used to investigate the relative influence of the material properties and applied loads on crack propagation. For various sets of material properties, various types of loads as axial loads or normal loads located at various positions on the peel arm are tested. Crack propagation and potential damages induced in the peel arm by the applied loads are outputs of the sensitivity analyses. These analyses enable identifying quantitatively the loading conditions ensuring separation with a minimal damage of the recovered lamina.","PeriodicalId":392595,"journal":{"name":"VIII Conference on Mechanical Response of Composites","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126309677","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: 0

Material Modling of Textile Reinforced Composites with Respect to Fracture Initiation and Strain Rate Sensitivity 基于断裂起始和应变速率敏感性的纺织增强复合材料模型

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.094

M. Richter, H. Dell, G. Oberhofer, H. Gese, F. Duddeck

引用次数: 0

Failure of Thermoplastic Composite Welded Joints 热塑性复合材料焊接接头的失效

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.043

B. Tijs, A. Turón, C. Bisagni

引用次数: 0

Distortional Hardening Material Model for Unidirectioally Reinforced CFRTP Considered from the Results of Numerical Material Testing 基于数值材料试验结果的单向增强CFRTP变形硬化材料模型

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.055

K. Yamamoto, M. Somemiya, S. Matsubara, N. Hirayama, K. Terada

引用次数: 0

Constitutive Modeling and Finite Element Simulation of Metal-Polymer-Metal Sandwich Structures 金属-聚合物-金属夹层结构的本构建模与有限元仿真

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.070

M. Fagerstr¨om, G. Catalanotti, P. K. Dileep, Stefan Hartmann, Tobias Fischer, Gerhard Ziegmann, Wei Hua, Heinz Palkowski

{"title":"Constitutive Modeling and Finite Element Simulation of Metal-Polymer-Metal Sandwich Structures","authors":"M. Fagerstr¨om, G. Catalanotti, P. K. Dileep, Stefan Hartmann, Tobias Fischer, Gerhard Ziegmann, Wei Hua, Heinz Palkowski","doi":"10.23967/composites.2021.070","DOIUrl":"https://doi.org/10.23967/composites.2021.070","url":null,"abstract":"The practical application of light-weight structures in the form of sandwich structures is of particular interest in structural, automotive, marine, and aviation industries. We investigate metal/polymer/metal (MPM) sandwich structures, which show complex response when subjected to metal forming processes due to varying material characteristics within the layers. To evaluate the forming processes of sandwich structures, constitutive models for the face sheets made of heat treated steel of deep drawing quality and the core layer made of PA6 polymer are a prerequisite. For a ﬁrst instance, a ﬁnite strain viscoplasticity model as proposed in [1, 2] is chosen. For the core layer, an extended constitutive model as shown in [3] will be proposed. This is based on a thermo-mechanically consistent ﬁnite strain overstress-type viscoplasticity model representing the material behavior of PA6. In this regard, a number of experiments are shown, which are the basis of the model. Both constitutive models contain material parameters, which are identiﬁed by tensile tests investigating rate-dependent, long term relaxation, and multi-step relaxation behavior performed at room temperature, see for a possible procedure [4]. In the ﬁnal step, the constitutive models for steel and PA6 are numerically validated using deep drawing and bending experiments of MPM sandwich structures.","PeriodicalId":392595,"journal":{"name":"VIII Conference on Mechanical Response of Composites","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126002344","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: 0

Optimization of Specimen and Tabs Geometry for Quasi-Static and Fatigue Testing of Composites in UD 90° Laminates UD 90°层合板准静态和疲劳试验中试样和片形的优化

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.067

C. Schneider, G. Pinter

引用次数: 0

The Impact of the Curing and Post-Stretching Process on the Stresses Distribution Around an Open Hole in Glare Laminate 固化和后拉伸工艺对眩光层压板开孔周围应力分布的影响

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.102

F. Turon, F. Otero, J. Freitas, van Hengel, H. C. D. Frel, X. Martinez

引用次数: 0

Investigation of Three-Dimensional Dynamic Delamination in Curved Unidirectional CFRP Laminates 弯曲单向CFRP复合材料三维动态分层研究

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.118

T. Ata, D. Coker

引用次数: 0

Efficient Modelling of Delamination Initiation and Propagation in Large Structures 大型结构中分层发生和扩展的高效建模

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.121

Pierre M. Daniel, Johannes Fr¨amby, Pere Maim´ı, Martin Fagerstr¨om

引用次数: 0

Modelling the Finite Strain Behaviour of Unidirectional Composites: an Invariant-Based Model with Viscous Effects 单向复合材料有限应变行为的建模:一个具有粘性效应的不变量模型

VIII Conference on Mechanical Response of Composites Pub Date : 2021-09-01 DOI: 10.23967/composites.2021.116

I. Lopes, P. Camanho, F. Pires

引用次数: 0