Deterministic and Stochastic Analysis of Seismic Response ofEquipment and Block-like Structures

9503766 Spanos该项目进行了一项研究调查，其特点是改进模型，准确描述设备和其他一些块状结构系统的地震响应。 在这项研究中采取的方法认为，作为一个连续的时间过程块与基础的影响。 该冲击模型代表了大多数重要的几何、机械和材料量的影响，例如材料刚度、块纵横比、摩擦系数值和结构的塑性行为。 此外，基于通用离散元方法的多块体系统的分析和设计的新的数值方法将被开发。 此外，亦会进行地震作用下的块状结构的随机分析。 在发展所提出的方法的理论和数值方面，这些模型和分析将被应用于调查各种实际设备和历史古迹结构的设计问题。 ***

9503766 Spanos This project conducts a research investigation featuring improved models which accurately describe the seismic response of equipment and of some other block-like structural systems. The approach undertaken in this study considers the impact of the block with the foundation as a continuous process of time. This impact model represents the influence of most of the important geometrical, mechanical, and material quantities such as material stiffness, block aspect ratio, value of the coefficient of friction, and the plastic behavior of the structure. Further, new numerical methods for analysis and design of multi-block systems based on versatile discrete element method will be developed. Stochastic analysis of block-like structures under earthquake excitations will also be carried out. Upon developing the theoretical and numerical aspects of the proposed methods, these models and the analyses will be applied to investigate the design problems of a variety of practical equipment and historical monuments structures. ***