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Investigations into the benefits of base isolation for non-symmetric rigid blocks

机译：研究非对称刚性块基础隔离的好处

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In this paper the influence of base isolation on the behaviour of a work of art has been analysed. To make things more realistic, the work of art has been modelled with a non-symmetrical rigid body, sitting on a base that is connected to a visco-elastic device, which represents the passive control system. To prevent the breaking of the isolation device, security stops have been introduced to limit the displacement of the oscillating base to a maximum safety value. All analyses have been carried out comparing the behaviour of the non-isolated and the isolated non-symmetric rigid body subject to impulsive and seismic excitations. The analysis is particularly focused on the effects of the eccentricity of the rigid body and on the presence of the security stops. Generally, base isolation improves the behaviour of the system while the presence of an eccentricity makes the performance of the system worse with respect to the symmetric rigid body. Moreover the security stops, although they preserve the isolator devices, cause a worsening in the performance of the systems.
机译：在本文中，已经分析了基础隔离对艺术品行为的影响。为了使事情更逼真，艺术品被建模为一个非对称刚体，该刚体位于连接到代表被动控制系统的粘弹性设备的底座上。为了防止隔离装置损坏，已引入安全挡块，以将摆动基座的位移限制到最大安全值。已经进行了所有分析，以比较非隔离和隔离非对称刚体在脉冲和地震激励作用下的行为。该分析尤其集中在刚体偏心的影响和安全挡块的存在上。通常，基础隔离改善了系统的性能，而偏心的存在使系统的性能相对于对称刚体更差。此外，安全性停止，尽管它们保留了隔离器设备，但会导致系统性能恶化。

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