OpenSees的全称是Open System for Earthquake Engineering Simulation（地震 \ x:_*`fU
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 )S#j.8P'B
盟“太平洋地震工程研究中心”（Pacific Earthquake Engineering Research Center， XQ4d ohGCP
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 L+u OBW_
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。 ynx WQ%d(`
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 D)h["z|F
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 ?$2q P`-
构、桥梁、岩土工程在内众多的实际工程和振动台试验项目，证明其具有较 8dl Inms
好的非线性数值模拟精度。该程序正在引起世界各国结构工程领域众多研究人员 9W$m D w6f
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 aK!xRnY
工作。 E
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The Open System for Earthquake Engineering Simulation sBbL~ce50?
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. -}N Ab^d
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Capabilities 0:s8o@}
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. xTGP
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Modeling cK/PQsMP
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. !\3 }R25
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Analysis 3b ,=
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. 1O|RIv7F[/
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Development Process BSjbn nW}"
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. J tThkh'-"
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