Test rig for load combinations for life prediction of complex lightweight strukturs

用于复杂轻质结构寿命预测的负载组合试验台

• 批准号: 112086724
• 负责人: Professor Dr.-Ing. Dieter Krause
• 金额: --
• 依托单位: Institut für Kunststoffe und Verbundwerkstoffe
• 依托单位国家: 德国
• 项目类别: Major Instrumentation Initiatives
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/112086724?language=en
• 关键词: Test; rig; load; combinations; life

In the construction of composite parts the specific properties of composites (inter alia anisotropy) are not used as consequently as potentially possible. Often the mere substitution of metal is made. For the product development there are still missing design guidelines for efficiently using the composite materials. Within an interdisciplinary research composites in close vicinity to the final component are multiaxially tested with the aim to design composites to their limits, both in life and durability. The test equipment used is a modular hexapod concept with servohydraulic actuators. The ranges of topics comprise three fields: i) Textile Structures ii) Flexible Composites and iii) Degradation of composite materials. For the textile structures damage degradation and failure criteria will be developed under multiaxial loading situations. Due to the fact that flexible composites show a very different behaviour from normal composites, but find increasing entry into the application, applicable lifetime and failure predictions are indispensable. The analysis of the degradation behaviour of complex, real component parts serves as third pillar. With these fundamental principles lightweight construction design guidelines and simulation methods can be developed which clearly increase the potential of composites with regard to the application thereof.

在复合材料部件的构造中，复合材料的特定性质（尤其是各向异性）没有尽可能地被使用。通常只是金属的替代品。对于产品开发，仍然缺少有效使用复合材料的设计指南。在跨学科的研究中，复合材料靠近最终组件进行多轴测试，目的是设计复合材料，以达到其寿命和耐久性的极限。所用的测试设备是一个模块化的六足概念与伺服液压执行器。主题范围包括三个领域：i）纺织结构ii）柔性复合材料和iii）复合材料的降解。对于纺织结构，将在多轴载荷情况下开发损伤退化和失效准则。由于柔性复合材料表现出与普通复合材料非常不同的行为，但越来越多地进入应用，适用的寿命和失效预测是必不可少的。分析复杂的、真实的组成部分的退化行为是第三个支柱。有了这些基本原理，就可以开发出轻质结构设计准则和模拟方法，从而明显增加复合材料在其应用方面的潜力。