Abstract The use of high strength steels is penalised by the current regulations of pressure vessel codes. Simulation studies could enhance the data basis for exploring more suitable design functions or safety factors. Damage mechanics are able to provide an adequate description of ductile failure on small-scale experiments. The article presents a modelling concept for scale-bridging damage mechanics models for the application in large-scaled components. The validity of this concept is demonstrated on the comparison with results of a burst test, which was performed on a vessel produced from P690Q. The burst pressure of 680 bar as well as the initial failure location could very well be reproduced by the damage mechanics simulation based on actual material investigations. Furthermore, an approach for the derivation of virtual model parameters based on nominal material requirements is presented. This allows determining limit pressures for any kind of vessel geometries. Such nominal simulations can e.g. help to create a data basis for exploring suitable design functions for high strength steels in the future.

中文翻译：

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使用损伤力学对爆破试验中的延性破坏进行有效的、规模桥接模拟

摘要 目前的压力容器规范规定对高强度钢的使用是不利的。仿真研究可以增强数据基础，以探索更合适的设计功能或安全因素。损伤力学能够在小规模实验中提供对延性破坏的充分描述。本文提出了一种用于大型部件中应用的尺度桥接损伤力学模型的建模概念。与爆破测试结果的比较证明了这一概念的有效性，该测试是在 P690Q 生产的船只上进行的。680 bar 的爆破压力以及初始故障位置可以通过基于实际材料调查的损伤力学模拟很好地再现。此外，介绍了一种基于名义材料要求推导虚拟模型参数的方法。这允许确定任何类型的容器几何形状的极限压力。例如，这种名义模拟可以帮助创建数据基础，以便在未来探索适合高强度钢的设计功能。