OpenSees的全称是Open System for Earthquake Engineering Simulation（地震 0!KYi_3
工程模拟的开放体系）。它是由美国国家自然科学基金（NSF）资助、西部大学联 ( xWsyo(4
盟“太平洋地震工程研究中心”（Pacific Earthquake Engineering Research Center， ]W4{|%@H"
简称PEER）主导、加州大学伯克利分校为主研发而成的、用于结构和岩土方面地 /'E[03I~
震反应模拟的一个较为全面且不断发展的开放的程序软件体系。 S
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OpenSees程序自1999年正式推出以来，已广泛用于太平洋地震工程研究中心 %G,7Ul1f
和美国其它一些大学和科研机构的科研项目中，较好的模拟了包括钢筋混凝土结 ? daxb
构、桥梁、岩土工程在内众多的实际工程和振动台试验项目，证明其具有较 Njr;Wa.r+
好的非线性数值模拟精度。该程序正在引起世界各国结构工程领域众多研究人员 d=8.cQL:E
的关注和重视，而在国内也开始有少数学校开展了一些初步的学习和相关的研究 _j3rs97@|
工作。 {X{S[(|
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The Open System for Earthquake Engineering Simulation 4b;*:C4?
The Open System for Earthquake Engineering Simulation (OpenSees) is a software framework for simulating the seismic response of structural and geotechnical systems. OpenSees has been developed as the computational platform for research in performance-based earthquake engineering at the Pacific Earthquake Engineering Research Center. OpenSees is also the simulation component for the NEESit since 2004. XzX2V">(%
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Capabilities b]Kb ~y|
OpenSees has advanced capabilities for modeling and analyzing the nonlinear response of systems using a wide range of material models, elements, and solution algorithms. The software is designed for parallel computing to allow scalable simulations on high-end computers or for parameter studies. <uJ
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Modeling TQNdBq5I6
OpenSees providing beam-column elements and continuum elements for structural and geotechnical models. A wide range of uniaxial materials and section models are available for beam-columns. Scm45"wB+
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Analysis pU<J?cU8N
Nonlinear analysis requires a wide range of algorithms and solution methods. OpenSees provides nonlinear static and dynamic methods, equation solvers, and methods for handling constraints. +r//8&
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Development Process 3D! 7,@&>3
OpenSees is open-source. This website provides information about the software architecture, access to the source code, and the development process. The open-source movement allows earthquake engineering researchers and users to build upon each others accomplishments using OpenSees as community-based software. F?]J`F\I
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