OpenSees的全称是Open System for Earthquake Engineering Simulation（地震
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
盟“太平洋地震工程研究中心”（Pacific Earthquake Engineering Research Center，
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
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。
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
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
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
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
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
工作。

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.

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.

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.

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.

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.

下载地址：File name: OpenSees2.2.0.exe.zip
File size:2.38 MB

OpenSees2.2.0.exe.zip

OpenSees2.2.0.exe.zip

Opensees基于Tcl环境运行：Tcl编译器下载

OpenSees主页：http://opensees.berkeley.edu/index.php