Multi-Axial Test System for Real-Time Hybrid Simulations

建议的“多轴实时混合仿真测试系统”由三个伺服液压执行器及其设备和进一步的硬件组件。测试系统将安装在该研究所的实验室中。利用该测试系统，将在结构上模拟多轴载荷事件，以研究其动态行为。研究的重点是实时混合仿真技术。该方法将结构细分为两个子结构：实验子结构和数值子结构。执行机构对实验子结构进行物理测试。同时，高性能计算机（Target-PC）模拟的数值子结构。涉及相互作用力和位移的数据在计算机和试验台之间实时交换。该方法精确地反映了动力荷载和相互作用效应，与常用的拟动力方法相比，具有更高的精度。对于结构的多轴测试，所提出的测试系统的致动器将被附接到实验室的反应墙。进一步的加载配置将通过试验系统与研究所现有的单轴振动台的组合操作来实现。为此，振动台将通过使用建议的致动器的进一步测试方向来增强。因此，摇动的操作能力将显著增强。此外，在反应墙和振动台上，可以实时进行组合模拟。

The proposed "multi-axial test system for real-time hybrid simulations" consists of three servo-hydraulic actuators with their equipment and further hardware components. The test system will be installed in a laboratory of the institute. With the test system, multi-axial loading events will be simulated on structures for the investigation of their dynamic behaviour. Research focus will be on the real-time hybrid simulation technique. This method subdivides structures into two substructures: Experimental and numerical substructures. Actuators physically test the experimental substructure. Simultaneously, a high performance computer (Target-PC) simulates the numerical substructure. The data involving interaction forces and displacements is exchanged between the computer and the test rig in real-time. By exact representation of the dynamic loads and interaction effects, the method achieves a higher accuracy compared to the common pseudo-dynamic approaches. For the multi-axial testing of structures, the actuators of the proposed test system will be attached to a reaction wall of the laboratory. Further loading configurations will be realised by a combined operation of the test systems with the existing uniaxial shaking table of the institute. For this purpose, the shaking table will be enhanced by a further testing direction with the proposed actuators. Thus, the operation capacity of the shaking will be enhanced significantly. Furthermore, both on the reaction wall and on the shaking table, combined simulations can be conducted in real-time.