Collaborative Research; ParCYCLIC: Internet-Enabled Simulation of Earthquake Liquefaction Response on Parallel Computers

合作研究；

• 批准号: 0084616
• 负责人: Ahmed Elgamal
• 金额: $ 7.49万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0084616&HistoricalAwards=false
• 关键词: Collaborative; Research; ParCYCLIC; Internet; Enabled

This effort is a collaboration between researchers at University of California, San Diego (UCSD) and Stanford University. The objective is to explore and utilize advanced computational and information technologies to further develop a state-of-the-art nonlinear finite element program (CYCLIC) for earthquake ground response and liquefaction simulation. Calibrated codes for modeling and simulation of earthquake geotechnical phenomena will be combined with advanced computational methodologies to facilitate the simulation of large-scale systems and broaden the scope of practical applications. The proposed work involves three main research elements: 1. Further development of the computational program CYCLIC: This development will introduce parameter sensitivity and optimization options. The capacity of the computational program will be extended from two-dimensional (2D) to 3D simulation. In addition, a transmitting boundary feature will be included. 2. Parallel and distributed computing capability: CYCLIC will be significantly enhanced by incorporating state-of-the-art software paradigm and solver technologies that are designed for parallel and distributed computing environments. Specifically, a multitask Single-Program-Multiple-Data (SPMD) program paradigm will be employed and implemented. Furthermore, parallel sparse matrix solvers will be developed and incorporated into the computational engine to improve performance and extend the simulation capabilities.3. Internet-based interactive web environment: In addition to the current 1D remote execution and visualization capability (http://casagrande.ucsd.edu), extensions to 2D and 3D will be facilitated through parallel computing. Novel useful features will include an extensive library of on-line input earthquake records, and a soil material library with pre-defined calibrated models for sand, silt, and clay soils. User friendliness will be addressed throughout the development process. Advanced Internet-enabled and web browsing technologies will be deployed to allow remote users to view the results in an interactive and dynamic manner. The experience gained in the development of the Internet-enabled simulation environment will be shared with other researchers and may help make many other useful computational programs widely accessible over the Internet for future applications.

这项工作是加利福尼亚大学，圣地亚哥大学（UCSD）和斯坦福大学的研究人员之间的合作。 目的是探索和利用先进的计算和信息技术进一步开发用于地震地面响应和液化模拟的最先进的非线性有限元程序（环状）。 地震岩土现象的建模和模拟的校准代码将与先进的计算方法结合使用，以促进大规模系统的模拟并扩大实际应用的范围。拟议的工作涉及三个主要的研究元素：1。计算程序循环的进一步发展：此开发将引入参数敏感性和优化选项。 计算程序的容量将从二维（2D）扩展到3D模拟。此外，还将包括传输边界功能。 2。并行和分布式计算能力：通过合并专为并行和分布式计算环境设计的最新软件范式和求解器技术，可以显着增强循环。 具体而言，将采用和实施多任务单程序 - 元素数据数据（SPMD）程序范例。 此外，将开发并入并入计算引擎中，以提高性能并扩展模拟功能。3。基于Internet的交互式Web环境：除了当前的1D远程执行和可视化功能（http://casagrande.ucsd.edu）外，对2D和3D的扩展还将通过并行计算来促进。新颖的有用功能将包括广泛的在线输入地震记录的库，以及带有用于沙子，淤泥和粘土土壤的预定型校准模型的土壤材料库。在整个开发过程中，用户友好将被解决。高级启用Internet和Web浏览技术将被部署，以允许远程用户以交互式和动态的方式查看结果。 在支持互联网的仿真环境中获得的经验将与其他研究人员共享，并可能有助于使许多其他有用的计算程序在Internet上广泛访问，以供将来的应用程序。