Modelling and simulation of the manufacture-dependent shrinkage behaviour of glass-fibrereinforced 36epoxy resins for the improved prediction of surface-waviness and warpage

对玻璃纤维增​​强 36 环氧树脂的制造相关收缩行为进行建模和仿真,以改进对表面波纹度和翘曲的预测

基本信息

项目摘要

The aim of the collaborative project is to gain an improved understanding of the processdependent shrinkage induced volumetric change during processing of thermoset fibre reinforced plastics (FRP). It is known that the specific choice of process parameters has direct influence on the quality of the component and in particular on process induced deformations and surface waviness. However, the influence of the processing pressure on the resin cure behaviour has so far not been the subject of systematic process-related investigations. Within the framework of the project, novel test methods are being developed and used for the analysis of the thermo- and chemo-mechanical phenomena in laboratory scale. Especially the relationships between the process parameters temperature and pressure as well as the relevant phenomena resin reaction, shrinkage and interface formation between fibre and matrix are examined using an online sensor system. In this way, essential aspects, which until now have been neglected in the prediction of residual stresses, can be identified. Based on the experimental findings, parameterised material models are developed that form the basis for a multi-scale simulation approach. This is simultaneously developed by the project partners both for the numerical prediction of the residual stress state inside the composite materialas well as for the computation of the resulting surface waviness. The phenomena occurring within the material and at its surface are to be linked causally to one another for the first time in order to achieve a continuous modelling strategy. The fundamental investigation of the physical matrix properties under real curing conditions and the development of a multi-scale simulation of residual stresses and surface effects can increase the predictability of current simulation methods and substantially increase the process and material understanding of thermoset FRP.
合作项目的目的是为了更好地理解热固性纤维增强塑料(FRP)加工过程中收缩引起的体积变化。众所周知,工艺参数的具体选择直接影响到零件的质量,特别是对工艺引起的变形和表面波纹。然而,到目前为止,加工压力对树脂固化行为的影响还没有系统的工艺相关研究。在该项目的框架内,正在开发新的测试方法,并用于实验室规模的热和化学机械现象的分析。利用在线传感器系统研究了工艺参数、温度和压力之间的关系以及树脂反应、收缩和纤维与基体之间的界面形成等相关现象。这样,在残余应力预测中一直被忽略的关键方面就可以被识别出来。基于实验结果,参数化材料模型被开发出来,形成了多尺度模拟方法的基础。这是由项目合作伙伴同时开发的,用于复合材料内部残余应力状态的数值预测以及由此产生的表面波纹度的计算。为了实现连续的建模策略,首次将材料内部和表面发生的现象因果联系起来。对真实固化条件下的物理基体特性的基础研究,以及对残余应力和表面效应的多尺度模拟的发展,可以增加当前模拟方法的可预测性,并大大增加对热固性FRP的工艺和材料的理解。

项目成果

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Professor Dr.-Ing. Maik Gude其他文献

Professor Dr.-Ing. Maik Gude的其他文献

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{{ truncateString('Professor Dr.-Ing. Maik Gude', 18)}}的其他基金

Experimental analysis and numerical modelling of microcrack induced delaminations under cyclic loading with load reversals
负载反转循环加载下微裂纹诱发分层的实验分析和数值模拟
  • 批准号:
    457043708
  • 财政年份:
    2021
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Designed metal-polymer-metal sandwich structures for improved energy absorption characteristics of crash structures
设计金属-聚合物-金属夹层结构,以改善碰撞结构的能量吸收特性
  • 批准号:
    407352905
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Simulation-assisted development of material-, load- and process-specific inserts for thermoplastic composites
仿真辅助开发热塑性复合材料的材料、负载和工艺特定嵌件
  • 批准号:
    408132410
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Analysis of the fundamentals of the cell structure formation while direct freeze foaming of biocom-patible ceramic foams
生物相容性陶瓷泡沫直接冷冻发泡过程中泡孔结构形成的基本原理分析
  • 批准号:
    310892168
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Experimental and virtual analysis of draping effect and of their impact on the structural mechanical behaviour of composite components
悬垂效应及其对复合材料部件结构力学行为影响的实验和虚拟分析
  • 批准号:
    287275762
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Damage analysis of fabric-reinforced polymer composites under superimposed in-plane/out-of-plane stress conditions
面内/面外叠加应力条件下织物增强聚合物复合材料的损伤分析
  • 批准号:
    269649711
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Development of the theoretical and technological fundamentals for intrinsic thermoplastic composite/metal hollow profiles with load-adapted cross-scale form fit
开发具有负载自适应跨尺度形状配合的本质热塑性复合材料/金属空心型材的理论和技术基础
  • 批准号:
    256127863
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Simulation-aided development and qualification of a novel Thermoclinch joining technology for multi-material design with textile-reinforced thermoplastic composites
用于纺织增强热塑性复合材料多材料设计的新型 Thermoclinch 连接技术的模拟辅助开发和鉴定
  • 批准号:
    227385749
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Development of failure mode related degradation models for carbon fibre reinforced textile com-posites with non-crimped threads
开发具有非卷曲线的碳纤维增强纺织复合材料的失效模式相关退化模型
  • 批准号:
    171396308
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Numerical and experimental analysis of permeation and cracking behavior of fiber reinforced plastic composites with thermoplastic matrix system
热塑性基体系统纤维增强塑料复合材料渗透和开裂行为的数值和实验分析
  • 批准号:
    496642725
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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