Acquisition of a High Performance Parallel Workstation Cluster for Research in Mechanics of Materials

采购高性能并行工作站集群用于材料力学研究

• 批准号: 9871240
• 负责人: Allan Bower
• 金额: $ 17.16万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-15 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9871240&HistoricalAwards=false
• 关键词: Acquisition; Performance; Parallel; Workstation; Cluster

9871240BowerThis action is in response to the Major Research Instrumentation Initiative MRI'98 (NSF 98-16). The purpose is to add a cluster of high performance workstations to the Computational Mechanical Research Facility at Brown University. The cluster is connected to form a dedicated, high speed parallel computing environment, and is used to strengthen the activities of the Materials Research Science and Engineering Center (MRSEC) at Brown University. The primary objective of MRSEC supported research is to develop and apply novel computational methods to understand how phenomena at the atomic scale (with nanometer dimensions) and microstructural scale (with micron dimensions) determine the mechanical, electronic and optical properties of materials. Several significant advances have been made towards this goal in recent years, including: development of the quasi-eontinuum method, which couples atomistic simulation techniques with adaptive finite element analysis; development of discrete dislocation models of plasticity; development of sharp interface and phase field models of microstructures evolution in stressed solids; development of finite element methods for computing strain effects on the electronic properties of semiconductors; and the development of physically-based models of fracture, which use microsructural properties of materials to predict the fracture resistance of structures. The facility is to be used to develop and apply scalable, parallel algorithms for simulating material behavior at a range of length scales and incorporating coupled physical processes. An immediate impact of the facility is to allow realistic three-dimensional simulations of material behavior to be run routinely. Further progress requires a systematic application of these techniques to explore fully the fundamental mechanisms of deformation and failure in materials. This facility provides the necessary computing power for this effort, and holds the promise of major breakthroughs in understanding the behavior of materials.

9871240 Bower这一行动是对重大研究仪器倡议MRI'98（NSF 98-16）的回应。 其目的是增加一个高性能的工作站集群的计算机械研究设施在布朗大学。 该集群连接起来形成一个专用的高速并行计算环境，并用于加强布朗大学材料研究科学与工程中心（MRSEC）的活动。 MRSEC支持研究的主要目标是开发和应用新的计算方法，以了解原子尺度（纳米尺寸）和微观结构尺度（微米尺寸）的现象如何决定材料的机械，电子和光学特性。 近年来，在这方面取得了一些重要进展，其中包括：准连续体方法的发展，它将原子模拟技术与自适应有限元分析相结合，塑性力学的离散位错模型的发展，应力固体中微观结构演化的锐界面和相场模型的发展，应力固体中微观结构演化的模拟方法的发展，应力固体中微观结构演化的模拟方法的发展。发展了计算应变对半导体电子特性影响的有限元法;以及基于物理的断裂模型的发展，该模型利用材料的微观结构特性来预测结构的断裂阻力。 该设施将用于开发和应用可扩展的并行算法，用于在一系列长度尺度上模拟材料行为，并结合耦合的物理过程。 该设施的直接影响是允许对材料行为进行逼真的三维模拟。 进一步的进展需要系统地应用这些技术，以充分探索材料变形和破坏的基本机制。 该设施为这项工作提供了必要的计算能力，并有望在理解材料行为方面取得重大突破。